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GSM-205-023

SERVICE MANUAL BATTERY BACKUP SYSTEM FOR HORIZONMACRO INDOOR
68P02900W59-O

GSM-205-023

Service Manual Battery Backup System for Horizonmacro Indoor

E Motorola 2000 All Rights Reserved Printed in the U.K.

16th May 00

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Copyrights, notices and trademarks
Copyrights
The Motorola products described in this document may include copyrighted Motorola computer programs stored in semiconductor memories or other media. Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyright computer programs, including the exclusive right to copy or reproduce in any form the copyright computer program. Accordingly, any copyright Motorola computer programs contained in the Motorola products described in this document may not be copied or reproduced in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the rights that arise by operation of law in the sale of a product.

Restrictions
The software described in this document is the property of Motorola. It is furnished under a license agreement and may be used and/or disclosed only in accordance with the terms of the agreement. Software and documentation are copyright materials. Making unauthorized copies is prohibited by law. No part of the software or documentation may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, without prior written permission of Motorola.

Accuracy
While reasonable efforts have been made to assure the accuracy of this document, Motorola assumes no liability resulting from any inaccuracies or omissions in this document, or from the use of the information obtained herein. Motorola reserves the right to make changes to any products described herein to improve reliability, function, or design, and reserves the right to revise this document and to make changes from time to time in content hereof with no obligation to notify any person of revisions or changes. Motorola does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey license under its patent rights of others.

Trademarks

MOTOROLA and M-Cell are trademarks of Motorola Inc. OSF/1, Motif, UNIX and the X device are registered trademarks in the United States and other countries, IT DialTone and the Open Group are trademarks of The Open Group. X Window System, X and X11 are trademarks of the Massachusetts Institute of Technology. Looking Glass is a registered trademark of Visix Software Ltd. Ethernet is a trademark of the Xerox Corporation. Wingz is a trademark and INFORMIX is a registered trademark of Informix Software Ltd. SUN, SPARC, and SPARCStation are trademarks of Sun Microsystems Computer Corporation. IBM is a registered trademark of International Business Machines Corporation. HP is a registered trademark of Hewlett Packard Inc. Netscape and Netscape Navigator are registered trademarks of Netscape Communications Corporation in the United States and other countries. Netscape’s logo and product and service names are also trademarks of Netscape Communications Corporation, which may be registered in other countries. Windows NT is a registered trademark of Microsoft Corporation.
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Issue status of this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . First aid in case of electric shock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reporting safety issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Warnings and cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Human exposure to radio frequency energy (PCS1900 only) . . . . . . . . . . . . . . . . . . . . . . Beryllium health and safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Devices sensitive to static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Motorola GSM manual set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GMR amendment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GMR amendment record . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 2 4 5 6 7 9 12 14 15 16 18 19

Chapter 1 Technical description of the battery backup system . . . . . . . . . . . . . . . . . . .
Introduction to the battery backup system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Purpose of the battery backup system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BBS cabinet layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Interface panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The battery strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The fan tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The rectifier modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The control and alarm board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control and alarm board front panel controls and indicators . . . . . . . . . . . . . . . . . Control and alarm board functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The circuit breaker panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The interface panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BBS specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview of specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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1–1 1–1 1–1 1–2 1–3 1–4 1–4 1–5 1–6 1–7 1–8 1–11 1–12 1–15 1–16 1–17 1–19 1–19 1–19 1–20 1–21 1–21 1–21 1–22 1–22

Chapter 2 Installing the battery backup system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tools required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Preparing the site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview of site preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BBS specifications and site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment delivery and unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Delivery and unpacking overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unpacking the cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview of BBS installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparing the BBS cabinet for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BBS cabinet installation options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cable connections to the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview of cable connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting dc output power cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Comms power output cable connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Alarm and signal cable connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting the emergency stop cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Earthing the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting single phase ac input cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting three phase ac input cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing the internal batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to internal battery installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Setting the battery string dipswitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Battery installation safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Procedure for installing the internal batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting external battery strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to external battery strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety precautions for connecting external batteries . . . . . . . . . . . . . . . . . . . . . . . Connecting an external battery string . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing the rectifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to rectifier installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rectifier installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stacking an Horizonmacro indoor cabinet on the BBS cabinet . . . . . . . . . . . . . . . . . . . . Fitting the stacking bracket onto the BBS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fitting an Horizonmacro indoor cabinet onto the stacking bracket . . . . . . . . . . . . Commissioning the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pre-power up checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Powering up the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Powering down the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Decommissioning the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Before starting to decommission the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . Procedure to remove a stacked Horizonmacro indoor cabinet . . . . . . . . . . . . . . . Procedure to decommission the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–2 2–2 2–2 2–4 2–4 2–5 2–6 2–6 2–7 2–8 2–10 2–10 2–11 2–11 2–12 2–13 2–13 2–14 2–15 2–16 2–16 2–17 2–18 2–19 2–22 2–22 2–22 2–22 2–23 2–23 2–24 2–26 2–26 2–27 2–28 2–28 2–28 2–29 2–30 2–30 2–30 2–31

Chapter 3 Maintenance procedures for the battery backup system . . . . . . . . . . . . . . .
Introduction to maintenance procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reporting faulty devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Routine maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Routine maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Opening the BBS cabinet door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-monthly maintenance procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Type of procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cleaning air inlets and outlet grilles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-monthly maintenance procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Summary of 12-monthly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Checking and cleaning fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Checking normal operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-monthly maintenance procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Summary of 24-monthly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical inspection of the cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FRU replacement procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to FRU replacement procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Isolating the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FRU list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Torque values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FRU view of the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the control and alarm board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to control and alarm board replacement . . . . . . . . . . . . . . . . . . . . . . . Replacement procedure for the control and alarm board . . . . . . . . . . . . . . . . . . . . Replacing a rectifier module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to rectifier replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacement procedure for a rectifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the fan tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to fan tray replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacement procedure for the fan tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the internal batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to internal battery replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internal battery replacement procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the BBS cabinet door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to door replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Views of the cabinet door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Door replacement procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–2 3–2 3–2 3–2 3–3 3–3 3–3 3–4 3–4 3–4 3–5 3–6 3–6 3–6 3–7 3–7 3–7 3–7 3–7 3–8 3–9 3–9 3–9 3–10 3–10 3–11 3–12 3–12 3–12 3–13 3–13 3–14 3–18 3–18 3–18 3–19

Chapter 4 Parts list for the battery backup system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts list information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to BBS parts list information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ordering method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spare parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Issue status of this manual

Issue status of this manual
Introduction
The following shows the issue status of this manual since it was first released.

Version information
The following lists the versions of this manual in order of manual issue: Manual issue O Date of issue 16th May 00 Original issue Remarks

Resolution of Problem Reports
The following Problem Reports are now resolved in this manual: Problem Report N/A GMR Number N/A Remarks

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General information

GSM-205-023

General information
Important notice
If this manual was obtained when you attended a Motorola training course, it will not be updated or amended by Motorola. It is intended for TRAINING PURPOSES ONLY. If it was supplied under normal operational circumstances, to support a major software release, then corrections will be supplied automatically by Motorola in the form of General Manual Revisions (GMRs).

Purpose
Motorola Global System for Mobile Communications (GSM) manuals are intended to instruct and assist personnel in the operation, installation and maintenance of the Motorola GSM equipment and ancillary devices. It is recommended that all personnel engaged in such activities be properly trained by Motorola. WARNING Failure to comply with Motorola’s operation, installation and maintenance instructions may, in exceptional circumstances, lead to serious injury or death. These manuals are not intended to replace the system and equipment training offered by Motorola, although they can be used to supplement and enhance the knowledge gained through such training.

About this manual
The manual contains the following information relating to the Battery Backup System (BBS), used in conjunction with Horizonmacro indoor cabinets: S S S S S S S S S S A technical description of the hardware. Installation information and configuration options. Maintenance procedures. Replacement parts list.

The objectives of this manual are to help the reader: Gain an overview of the equipment and interconnection of components. Understand the function and operation of all components. Be aware of the warnings (potential for harm to people) and cautions (potential for harm to equipment) to be observed when working on the equipment. Understand how to install and commission the equipment. Understand how to inspect, maintain, and repair the equipment. Have a clear ready reference for all dedicated information in one manual.

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General information

Cross references
Throughout this manual, cross references are made to the chapter numbers and section names. The section name cross references are printed bold in text. This manual is divided into uniquely identified and numbered chapters that, in turn, are divided into sections. Sections are not numbered, but are individually named at the top of each page, and are listed in the table of contents.

Text conventions
The following conventions are used in the Motorola GSM manuals to represent keyboard input text, screen output text and special key sequences.

Input
Characters typed in at the keyboard are shown like this.

Output
Messages, prompts, file listings, directories, utilities, and environmental variables that appear on the screen are shown like this.

Special key sequences
Special key sequences are represented as follows: CTRL–c ALT–f | CR or RETURN Press the Control and c keys at the same time. Press the Alt and f keys at the same time. Press the pipe symbol key. Press the Return (Enter) key. The Return key is identified with the ↵ symbol on both the X terminal and the SPARCstation keyboards. The SPARCstation keyboard Return key is also identified with the word Return.

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First aid in case of electric shock

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First aid in case of electric shock
Warning
WARNING Do not touch the victim with your bare hands until the electric circuit is broken. Switch off. If this is not possible, protect yourself with dry insulating material and pull or push the victim clear of the conductor.

Artificial respiration
In the event of an electric shock it may be necessary to carry out artificial respiration. Send for medical assistance immediately.

Burns treatment
If the patient is also suffering from burns, then, without hindrance to artificial respiration, carry out the following: 1. 2. 3. Do not attempt to remove clothing adhering to the burn. If help is available, or as soon as artificial respiration is no longer required, cover the wound with a dry dressing. Do not apply oil or grease in any form.

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Reporting safety issues

Reporting safety issues
Introduction
Whenever a safety issue arises, carry out the following procedure in all instances. Ensure that all site personnel are familiar with this procedure.

Procedure
Whenever a safety issue arises: 1. 2. 3. Make the equipment concerned safe, for example, by removing power. Make no further attempt to tamper with the equipment. Report the problem directly to GSM Customer Network Resolution Centre +44 (0)1793 430040 (telephone) and follow up with a written report by fax +44 (0)1793 430987 (fax). Collect evidence from the equipment under the guidance of the Customer Network Resolution Centre.

4.

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Warnings and cautions

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Warnings and cautions
Introduction
The following describes how warnings and cautions are used in this manual and in all manuals of the Motorola GSM manual set.

Warnings
Definition
A warning is used to alert the reader to possible hazards that could cause loss of life, physical injury, or ill health. This includes hazards introduced during maintenance, for example, the use of adhesives and solvents, as well as those inherent in the equipment.

Example and format
WARNING Do not look directly into fibre optic cables or optical data in/out connectors. Laser radiation can come from either the data in/out connectors or unterminated fibre optic cables connected to data in/out connectors.

Cautions
Definition
A caution means that there is a possibility of damage to systems, or individual items of equipment within a system. However, this presents no danger to personnel.

Example and format
CAUTION Do not use test equipment that is beyond its calibration due date when testing Motorola base stations.

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General warnings

General warnings
Introduction
Observe the following warnings during all phases of operation, installation and maintenance of the equipment described in the Motorola GSM manuals. Failure to comply with these warnings, or with specific warnings elsewhere in the Motorola GSM manuals, violates safety standards of design, manufacture and intended use of the equipment. Motorola assumes no liability for the customer’s failure to comply with these requirements.

Warning labels
Personnel working with or operating Motorola equipment must comply with any warning labels fitted to the equipment. Warning labels must not be removed, painted over or obscured in any way.

Specific warnings
Warnings particularly applicable to the equipment are positioned on the equipment and within the text of this manual. These must be observed by all personnel at all times when working with the equipment, as must any other warnings given in text, on the illustrations and on the equipment.

High voltage
Certain Motorola equipment operates from a dangerous high voltage of 230 V ac single phase or 415 V ac three phase mains which is potentially lethal. Therefore, the areas where the ac mains power is present must not be approached until the warnings and cautions in the text and on the equipment have been complied with. To achieve isolation of the equipment from the ac supply, the mains input isolator must be set to off and locked. Within the United Kingdom (UK) regard must be paid to the requirements of the Electricity at Work Regulations 1989. There may also be specific country legislation which need to be complied with, depending on where the equipment is used.

RF radiation
High RF potentials and electromagnetic fields are present in the base station equipment when in operation. Ensure that all transmitters are switched off when any antenna connections have to be changed. Do not key transmitters connected to unterminated cavities or feeders. Refer to the following standards: S S ANSI IEEE C95.1-1991, IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3kHz to 300GHz. CENELEC 95 ENV 50166-2, Human Exposure to Electromagnetic Fields High Frequency (10kHz to 300GHz).

Laser radiation
Do not look directly into fibre optic cables or optical data in/out connectors. Laser radiation can come from either the data in/out connectors or unterminated fibre optic cables connected to data in/out connectors.

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General warnings

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Lifting equipment
When dismantling heavy assemblies, or removing or replacing equipment, the competent responsible person must ensure that adequate lifting facilities are available. Where provided, lifting frames must be used for these operations. When equipments have to be manhandled, reference must be made to the Manual Handling of Loads Regulations 1992 (UK) or to the relevant manual handling of loads legislation for the country in which the equipment is used.

Do not ...
... substitute parts or modify equipment. Because of the danger of introducing additional hazards, do not install substitute parts or perform any unauthorized modification of equipment. Contact Motorola if in doubt to ensure that safety features are maintained.

Battery supplies
Do not wear earth straps when working with standby battery supplies.

Toxic material
Certain Motorola equipment incorporates components containing the highly toxic material Beryllium or its oxide Beryllia or both. These materials are especially hazardous if: S S S Beryllium materials are absorbed into the body tissues through the skin, mouth, or a wound. The dust created by breakage of Beryllia is inhaled. Toxic fumes are inhaled from Beryllium or Beryllia involved in a fire.

See the Beryllium health and safety precautions section for further information.

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Human exposure to radio frequency energy (PCS1900 only)

Human exposure to radio frequency energy (PCS1900 only)
Introduction
This equipment is designed to generate and radiate radio frequency (RF) energy. It should be installed and maintained only by trained technicians. Licensees of the Federal Communications Commission (FCC) using this equipment are responsible for insuring that its installation and operation comply with FCC regulations designed to limit human exposure to RF radiation in accordance with the American National Standards Institute IEEE Standard C95.1-1991, IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3kHz to 300GHz.

Definitions
This standard establishes two sets of maximum permitted exposure limits, one for controlled environments and another, that allows less exposure, for uncontrolled environments. These terms are defined by the standard, as follows:

Uncontrolled environment
Uncontrolled environments are locations where there is the exposure of individuals who have no knowledge or control of their exposure. The exposures may occur in living quarters or workplaces where there are no expectations that the exposure levels may exceed those shown for uncontrolled environments in the table of maximum permitted exposure ceilings.

Controlled environment
Controlled environments are locations where there is exposure that may be incurred by persons who are aware of the potential for exposure as a concomitant of employment, by other cognizant persons, or as the incidental result of transient passage through areas where analysis shows the exposure levels may be above those shown for uncontrolled environments but do not exceed the values shown for controlled environments in the table of maximum permitted exposure ceilings.

Maximum permitted exposures
The maximum permitted exposures prescribed by the standard are set in terms of different parameters of effects, depending on the frequency generated by the equipment in question. At the frequency range of this Personal Communication System equipment, 1930-1970MHz, the maximum permitted exposure levels are set in terms of power density, whose definition and relationship to electric field and magnetic field strengths are described by the standard as follows:

Power density (S)
Power per unit area normal to the direction of propagation, usually expressed in units of watts per square metre (W/m2) or, for convenience, units such as milliwatts per square centimetre (mW/cm2). For plane waves, power density, electric field strength (E) and magnetic field strength (H) are related by the impedance of free space, 377 ohms. In particular,
2 S + E + 377 377

H2

where E and H are expressed in units of V/m and A/m, respectively, and S in units of W/m 2. Although many survey instruments indicate power density units, the actual quantities measured are E or E2 or H or H2.

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Human exposure to radio frequency energy (PCS1900 only)

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Maximum permitted exposure ceilings
Within the frequency range, the maximum permitted exposure ceiling for uncontrolled environments is a power density (mW/cm2) that equals f/1500, where f is the frequency expressed in MHz, and measurements are averaged over a period of 30 minutes. The maximum permitted exposure ceiling for controlled environments, also expressed in mW/cm 2, is f/300 where measurements are averaged over 6 minutes. Applying these principles to the minimum and maximum frequencies for which this equipment is intended to be used yields the following maximum permitted exposure levels: Uncontrolled Environment 1930MHz Ceiling 1970MHz Controlled Environment 1930MHz 1970MHz

1.287mW/cm 2 1.313mW/cm 2 6.433mW/cm 2 6.567mW/cm 2

If you plan to operate the equipment at more than one frequency, compliance should be assured at the frequency which produces the lowest exposure ceiling (among the frequencies at which operation will occur). Licensees must be able to certify to the FCC that their facilities meet the above ceilings. Some lower power PCS devices, 100 milliwatts or less, are excluded from demonstrating compliance, but this equipment operates at power levels orders of magnitude higher, and the exclusion is not applicable. Whether a given installation meets the maximum permitted exposure ceilings depends, in part, upon antenna type, antenna placement and the output power to which this equipment is adjusted. The following example sets forth the distances from the antenna to which access should be prevented in order to comply with the uncontrolled and controlled environment exposure limits as set forth in the ANSI IEEE standards and computed above.

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Human exposure to radio frequency energy (PCS1900 only)

Example calculation
For a base station with the following characteristics, what is the minimum distance from the antenna necessary to meet the requirements of an uncontrolled environment? Transmit frequency Base station cabinet output power, P Antenna feeder cable loss, CL Antenna input power Pin Antenna gain, G Using the following relationship: G + 4p r W Pin
2

1930MHz +39.0 dBm (8 watts) 2.0dB P–CL = +39.0–2.0 = +37.0dB (5watts) 16.4dBi (43.65)

Where W is the maximum permissible power density in W/m2 and r is the safe distance from the antenna in metres, the desired distance can be calculated as follows: r+

ǸGPin + Ǹ 43.65 5 + 1.16m 4p W 4p 12.87

where W = 12.87 W/m2 was obtained from table listed above and converting from mW/cm 2 to W/m2. NOTE The above result applies only in the direction of maximum radiation of the antenna. Actual installations may employ antennas that have defined radiation patterns and gains that differ from the example set forth above. The distances calculated can vary depending on the actual antenna pattern and gain.

Power density measurements
While installation calculations such as the above are useful and essential in planning and design, validation that the operating facility using this equipment actually complies will require making power density measurements. For information on measuring RF fields for determining compliance with ANSI IEEE C95.1-1991, see IEEE Recommended Practice for the Measure of Potentially Hazardous Electromagnetic Fields - RF and Microwave, IEEE Std C95.3-1991. Copies of IEEE C95.1-1991 and IEEE C95.3-1991 may be purchased from the Institute of Electrical and Electronics Engineers, Inc., Attn: Publication Sales, 445 Hoes Lane, P.O. Box 1331, Piscattaway, NJ 08855-1331, (800) 678-IEEE or from ANSI, (212) 642-4900. Persons responsible for installation of this equipment are urged to consult these standards in determining whether a given installation complies with the applicable limits.

Other equipment
Whether a given installation meets ANSI standards for human exposure to radio frequency radiation may depend not only on this equipment but also on whether the environments being assessed are being affected by radio frequency fields from other equipment, the effects of which may add to the level of exposure. Accordingly, the overall exposure may be affected by radio frequency generating facilities that exist at the time the licensee’s equipment is being installed or even by equipment installed later. Therefore, the effects of any such facilities must be considered in site selection and in determining whether a particular installation meets the FCC requirements.

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Beryllium health and safety precautions

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Beryllium health and safety precautions
Introduction
Beryllium (Be), is a hard silver/white metal. It is stable in air, but burns brilliantly in Oxygen. With the exception of the naturally occurring Beryl ore (Beryllium Silicate), all Beryllium compounds and Beryllium metal are potentially highly toxic.

Health issues
Beryllium Oxide is used within some components as an electrical insulator. Captive within the component it presents no health risk whatsoever. However, if the component should be broken open and the Beryllium Oxide, which is in the form of dust, released, there exists the potential for harm.

Inhalation
Inhalation of Beryllium Oxide can lead to a condition known as Berylliosis, the symptoms of Berylliosis are similar to Pneumonia and may be identified by all or any of the following: Mild poisoning causes fever, shortness of breath, and a cough that produces yellow/green sputum, or occasionally bloodstained sputum. Inflammation of the mucous membranes of the nose, throat, and chest with discomfort, possibly pain, and difficulty with swallowing and breathing. Severe poisoning causes chest pain and wheezing which may progress to severe shortness of breath due to congestion of the lungs. Incubation period for lung symptoms is 2-20 days. Exposure to moderately high concentrations of Beryllium in air may produce a very serious condition of the lungs. The injured person may become blue, feverish with rapid breathing and raised pulse rate. Recovery is usual but may take several months. There have been deaths in the acute stage. Chronic response. This condition is more truly a general one although the lungs are mainly affected. There may be lesions in the kidneys and the skin. Certain features support the view that the condition is allergic. There is no relationship between the degree of exposure and the severity of response and there is usually a time lag of up to 10 years between exposure and the onset of the illness. Both sexes are equally susceptible. The onset of the illness is insidious but only a small number of exposed persons develop this reaction.

First aid
Seek immediate medical assistance. The casualty should be removed immediately from the exposure area and placed in a fresh air environment with breathing supported with Oxygen where required. Any contaminated clothing should be removed. The casualty should be kept warm and at rest until medical aid arrives.

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Beryllium health and safety precautions

Skin contact
Possible irritation and redness at the contact area. Persistent itching and blister formations can occur which usually resolve on removal from exposure.

First aid
Wash area thoroughly with soap and water. If skin is broken seek immediate medical assistance.

Eye contact
May cause severe irritation, redness and swelling of eyelid(s) and inflammation of the mucous membranes of the eyes.

First aid
Flush eyes with running water for at least 15 minutes. Seek medical assistance as soon as possible.

Handling procedures
Removal of components from printed circuit boards (PCBs) is to take place only at Motorola approved repair centres. The removal station will be equipped with extraction equipment and all other protective equipment necessary for the safe removal of components containing Beryllium Oxide. If during removal a component is accidently opened, the Beryllium Oxide dust is to be wetted into a paste and put into a container with a spatula or similar tool. The spatula/tool used to collect the paste is also to be placed in the container. The container is then to be sealed and labelled. A suitable respirator is to be worn at all times during this operation. Components which are successfully removed are to be placed in a separate bag, sealed and labelled.

Disposal methods
Beryllium Oxide or components containing Beryllium Oxide are to be treated as hazardous waste. All components must be removed where possible from boards and put into sealed bags labelled Beryllium Oxide components. These bags must be given to the safety and environmental adviser for disposal. Under no circumstances are boards or components containing Beryllium Oxide to be put into the general waste skips or incinerated.

Product life cycle implications
Motorola GSM and analogue equipment includes components containing Beryllium Oxide (identified in text as appropriate and indicated by warning labels on the equipment). These components require specific disposal measures as indicated in the preceding (Disposal methods) paragraph. Motorola will arrange for the disposal of all such hazardous waste as part of its Total Customer Satisfaction philosophy and will arrange for the most environmentally ‘friendly’ disposal available at that time.

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General cautions

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General cautions
Introduction
Observe the following cautions during operation, installation and maintenance of the equipment described in the Motorola GSM manuals. Failure to comply with these cautions or with specific cautions elsewhere in the Motorola GSM manuals may result in damage to the equipment. Motorola assumes no liability for the customer’s failure to comply with these requirements.

Caution labels
Personnel working with or operating Motorola equipment must comply with any caution labels fitted to the equipment. Caution labels must not be removed, painted over or obscured in any way.

Specific cautions
Cautions particularly applicable to the equipment are positioned within the text of this manual. These must be observed by all personnel at all times when working with the equipment, as must any other cautions given in text, on the illustrations and on the equipment.

Fibre optics
The bending radius of all fibre optic cables must not be less than 30 mm.

Static discharge
Motorola equipment contains CMOS devices that are vulnerable to static discharge. Although the damage caused by static discharge may not be immediately apparent, CMOS devices may be damaged in the long term due to static discharge caused by mishandling. Wear an approved earth strap when adjusting or handling digital boards. See Devices sensitive to static for further information.

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Devices sensitive to static

Devices sensitive to static
Introduction
Certain metal oxide semiconductor (MOS) devices embody in their design a thin layer of insulation that is susceptible to damage from electrostatic charge. Such a charge applied to the leads of the device could cause irreparable damage. These charges can be built up on nylon overalls, by friction, by pushing the hands into high insulation packing material or by use of unearthed soldering irons. MOS devices are normally despatched from the manufacturers with the leads shorted together, for example, by metal foil eyelets, wire strapping, or by inserting the leads into conductive plastic foam. Provided the leads are shorted it is safe to handle the device.

Special handling techniques
In the event of one of these devices having to be replaced observe the following precautions when handling the replacement: S S S S S S Always wear an earth strap which must be connected to the electrostatic point (ESP) on the equipment. Leave the short circuit on the leads until the last moment. It may be necessary to replace the conductive foam by a piece of wire to enable the device to be fitted. Do not wear outer clothing made of nylon or similar man made material. A cotton overall is preferable. If possible work on an earthed metal surface. Wipe insulated plastic work surfaces with an anti-static cloth before starting the operation. All metal tools should be used and when not in use they should be placed on an earthed surface. Take care when removing components connected to electrostatic sensitive devices. These components may be providing protection to the device.

When mounted onto printed circuit boards (PCBs), MOS devices are normally less susceptible to electrostatic damage. However PCBs should be handled with care, preferably by their edges and not by their tracks and pins, they should be transferred directly from their packing to the equipment (or the other way around) and never left exposed on the workbench.

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Motorola GSM manual set

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Motorola GSM manual set
Introduction
The following manuals provide the information needed to operate, install and maintain the Motorola GSM equipment.

Generic manuals
The following are the generic manuals in the GSM manual set, these manuals are release dependent: Classification number GSM-100-101 GSM-100-201 GSM-100-202 GSM-100-311 GSM-100-313 GSM-100-320 GSM-100-321 GSM-100-403 GSM-100-423 GSM-100-413 GSM-100-501 GSM-100-520 GSM-100-521 GSM-100-523 GSM-100-503 GSM-100-721 GSM-100-712 Name System Information: General . . . . . . . . . . . . . . . . . . . Operating Information: GSM System Operation . . . Operating Information: Scaleable OMC System Administration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical Description: OMC in a GSM System . . . . Technical Description: OMC Database Schema . . . Technical Description: BSS Implementation . . . . . . . Technical Description: BSS Command Reference . Installation & Configuration: GSM System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation & Configuration: BSS Optimization . . . . Installation & Configuration: Scaleable OMC Clean Install . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance Information: Alarm Handling at the OMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance Information: BSS Timers . . . . . . . . . . . Maintenance Information: Device State Transitions Maintenance Information: BSS Field Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maintenance Information: GSM Statistics Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Software Release Notes: BSS/RXCDR . . . . . . . . . . Software Release Notes: Scaleable OMC System . Index of Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . Order number 68P02901W01 68P02901W14 68P02901W19 68P02901W31 68P02901W34 68P02901W36 68P02901W23 68P02901W17 68P02901W43 68P02901W47 68P02901W26 68P02901W58 68P02901W57 68P02901W51 68P02901W56 68P02901W72 68P02901W74 68P02900W81

Related manuals
The following are related Motorola GSM manuals: Classification number GSM-001-103 GSM-002-103 GSM-002-703 GSM-005-103 GSM-008-403 GSM-008-703 GSM-006-202 GSM-006-413 GSM-006-712 Name System Information: BSS Equipment Planning . . . . System Information: DataGen . . . . . . . . . . . . . . . . . . Software Release Notes: DataGen . . . . . . . . . . . . . . System Information: Advance Operational Impact . Installation & Configuration: Network Health Analyst Software Release Notes: Network Health Analyst . Operating Information: OMC System Administration (OSI) . . . . . . . . . . . . . . . . . . . . . . . . . . Installation & Configuration: OSI Clean Install . . . . . Software Release Notes: OMC OSI System . . . . . . Order number 68P02900W21 68P02900W22 68P02900W76 68P02900W25 68P02900W36 68P02900W77 68P02901W10 68P02901W39 68P02901W70

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Motorola GSM manual set

Service manuals
The following are the service manuals in the GSM manual set, these manuals are not release dependent. The internal organization and makeup of service manual sets may vary, they may consist of from one to four separate manuals, but they can all be ordered using the overall catalogue number shown below: Classification number GSM-100-020 GSM-100-030 GSM-105-020 GSM-106-020 GSM-201-020 GSM-202-020 GSM-203-020 GSM-206-020 GSM-205-020 GSM-204-020 GSM-207-020 GSM-101-SERIES GSM-103-SERIES GSM-102-SERIES GSM-104-SERIES GSM-200-SERIES Name Service Manual: BTS . . . . . . . . . . . . . . . . . . . . . . . . . . Service Manual: BSC/RXCDR . . . . . . . . . . . . . . . . . . Service Manual: M-Cell2 . . . . . . . . . . . . . . . . . . . . . . . Service Manual: M-Cell6 . . . . . . . . . . . . . . . . . . . . . . . Service Manual: M-Cellcity and M-Cellcity+ . . . . . . . Service Manual: M-Cellaccess . . . . . . . . . . . . . . . . . . Service Manual: M-Cellarena . . . . . . . . . . . . . . . . . . . Service Manual: M-Cellarena macro . . . . . . . . . . . . . . . Service Manual: Horizonmacro Indoor . . . . . . . . . . . Service Manual: Horizonmacro Outdoor . . . . . . . . . . Service Manual: Horizonoffice . . . . . . . . . . . . . . . . . . ExCell4 Documentation Set . . . . . . . . . . . . . . . . . . . . ExCell6 Documentation Set . . . . . . . . . . . . . . . . . . . . TopCell Documentation Set (GSM900) . . . . . . . . . . . TopCell Documentation Set (DCS1800) . . . . . . . . . . M-Cellmicro Documentation Set . . . . . . . . . . . . . . . . . Order number 68P02901W37 68P02901W38 68P02901W75 68P02901W85 68P02901W95 68P02901W65 68P02902W36 68P02902W15 68P02902W06 68P02902W12 68P02902W46 68P02900W50 68P02900W70 68P02901W80 68P02902W80 68P02901W90

Classification number
The classification number is used to identify the type and level of a manual. For example, manuals with the classification number GSM-100-2xx contain operating information.

Order number
The Motorola 68P order (catalogue) number is used to order manuals.

Ordering manuals
All orders for Motorola manuals must be placed with your Motorola Local Office or Representative. Manuals are ordered using the order (catalogue) number. Remember, specify the manual issue required by quoting the correct suffix letter.

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GMR amendment

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GMR amendment
Introduction to GMRs
Changes to a manual that occur after the printing date are incorporated into the manual using General Manual Revisions (GMRs). GMRs are issued to correct Motorola manuals as and when required. A GMR has the same identity as the target manual. Each GMR is identified by a number in a sequence that starts at 01 for each manual at each issue. GMRs are issued in the form of loose leaf pages, with a pink instruction sheet on the front.

GMR procedure
When a GMR is received, check on the GMR amendment record page of this manual that previous GMRs, if any, have been incorporated. If not, contact your administrator or Motorola Local Office to obtain the missing GMRs. Remove and replace pages in this manual, as detailed on the GMR pink instruction sheet.

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GMR amendment record

GMR amendment record
Instructions
When a GMR is inserted in this manual, the amendment record below must be filled in to record the insertion. Retain the pink instruction sheet that accompanies each GMR and insert it in a suitable place in this manual for future reference.

Amendment record
Record the insertion of GMRs in this manual in the following table:

GMR number 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Incorporated by (signature)

Date

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GMR amendment record

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Chapter 1

Technical description of the battery backup system

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Chapter 1 Technical description of the battery backup system . . . . . . . . . . . . . . . . . . .
Introduction to the battery backup system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Purpose of the battery backup system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BBS cabinet layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Interface panel layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Technical description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The battery strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The fan tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The rectifier modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The control and alarm board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Control and alarm board front panel controls and indicators . . . . . . . . . . . . . . . . . Control and alarm board functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The circuit breaker panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The interface panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BBS specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview of specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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1–1 1–1 1–1 1–2 1–3 1–4 1–4 1–5 1–6 1–7 1–8 1–11 1–12 1–15 1–16 1–17 1–19 1–19 1–19 1–20 1–21 1–21 1–21 1–22 1–22

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Introduction to the battery backup system

Introduction to the battery backup system
Purpose of the battery backup system
The Battery Backup System (BBS) is designed for use with Horizonmacro indoor BTS cabinets. Its purpose is twofold: S S Provides a primary dc power source of –48 V dc to power a maximum of four indoor BTS cabinets plus customer comms equipment (if fitted). Provides battery backup to maintain power to the BTS cabinets and comms equipment in the event of loss of primary ac power to the BBS.

The amount of backup time available depends on the number of BTS cabinets connected, whether additional comms equipment is connected, and the number of battery strings installed in the BBS cabinet. For example: S S Worst case scenario: 4 BTS cabinets + 4 comms equipment + 1 battery string = 12 minutes. Best case scenario: 1 BTS cabinet + 0 comms equipment + 2 battery strings = 180 minutes. Anderson connectors are provided on the BBS interface panel to connect additional batteries if the battery backup time needs to be extended further.

Mechanical design
The BBS cabinet matches the appearance of the Horizonmacro indoor cabinet, and can be mounted either beneath or by the side of the indoor cabinet. It can also be mounted on top of a single M-Cell6 indoor battery box. The BBS cabinet can be split into four functional areas (starting at the bottom): S S S Battery compartment: Accommodates up to eight 12 V monoblocs, split into two battery strings of four monoblocs per string, to provide 2 x –48 V dc output. For minimum backup only one battery string may be fitted. Rectifier rack: Accommodates up to seven rectifiers, a control and alarm board, and a fan tray. Circuit breaker panel: This provides individual circuit breakers for the two battery strings, four BTSs and four comms units. Fuses are mounted in this panel for two Low Voltage Disconnect (LVD) contactors and the fan tray. Interface panel (mounted on top of the cabinet): This provides connectors for the following: – – – – – – – – Single or three phase ac supply to the BBS. –48 V dc supply to BTS (x 4). –48 V dc supply to comms equipment (x 4). External battery connections (single pair of Anderson connectors). BTS alarm connector (25-way D-type). Aux alarm connector (15-way D-type). Emergency stop connector. Earth stud.

S

All active modules within the BBS cabinet are “hot swappable”. This means that the monoblocs, rectifier modules, control and alarm board and fan tray can all be exchanged without interrupting BTS operation.

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Introduction to the battery backup system

GSM-205-023

BBS cabinet layout
Figure 1-1 shows the layout inside the BBS cabinet.
AC SUPPLY CONNECTOR (COVER REMOVED) CIRCUIT BREAKER PANEL

INTERFACE PANEL

CONTROL AND ALARM BOARD RECTIFIERS

FAN TRAY

MONOBLOCS

Figure 1-1 Fully equipped BBS cabinet layout (air inlet and battery cover removed)

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Introduction to the battery backup system

Interface panel layout
Figure 1-2 shows the positions of the connectors on the interface panel on the top of the BBS cabinet.
AUX ALARMS CONNECTOR BTS DC SUPPLY CONNECTORS EXTERNAL BATTERY CONNECTORS BTS ALARMS CONNECTOR COMMS POWER CONNECTORS EARTH STUD AC SUPPLY CONNECTOR

EMERGENCY STOP CONNECTOR

EXTERNAL BATTERY

BTS POWER

BTS AUX ALARMS

COMMS POWER

EMERG. STOP

AC INPUT POWER

VENTILATED AREA

Figure 1-2 BBS interface panel showing connections

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Technical description
Circuit description
AC input power, provided by a single phase or three phase supply, is fed to a bank of up to seven rectifiers. When a single phase ac input is used, all rectifiers are supplied from a common supply rail. When a three phase input is used the rectifiers are divided into three groups and each group supplied by a different supply phase. The rectifiers convert the ac input to a regulated dc output, which is fed to the BTS and Comms connectors on the interface panel via the BTS and COMMS LVD contactors. Circuit breakers are fitted between the LVDs and the dc output connectors to provide individual isolation facilities for each BTS and comms equipment dc supply. Backup batteries are connected to the dc supply circuit through two circuit breakers, which individually isolate the two battery strings. Under normal operating conditions, the batteries are float charged from the dc supply. If there is an interruption to the ac supply, power for the BTSs and comms equipment is automatically supplied directly from the batteries with no interruption. Once the ac supply is restored, dc power from the rectifiers is again fed to the BTSs and comms equipment. The control and alarm board regulates the charge rate of the batteries by controlling the output of the rectifiers. When operating on battery backup power, the control and alarm board monitors the dc output voltage level. An LVD Imminent alarm is issued when the battery voltage falls to 42.5 V (+/–0.5 V) to warn of an impending LVD disconnect. If the output voltage drops below 41 V (+/–0.5 V), the BTS LVD contactor opens to disconnect the dc supply to the BTSs to prevent deep discharge of the batteries. If the output voltage drops further to 39.5 V (+/–0.5 V), the COMMS LVD contactor opens to disconnect the dc supply to the system. Both LVD contactors close automatically once ac power to the BBS cabinet is restored. Remote alarm and signal connections are available from the BBS interface panel to the designated master Horizonmacro indoor BTS.

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Technical description

Circuit diagram
Figure 1-3 shows a simplified circuit diagram for the BBS.
ALARMS

RECTIFIERS

–48 V DC BTS OUTPUTS 1

LINK FOR SINGLE PHASE INPUT

1AH

2

3 AC INPUT L3 C4 1n L2 C3 1n L1 N E C1 1n EXTERNAL BATTERY BATT ISOLATOR 1 BATT ISOLATOR 2 0V 1AH CONTROL & ALARM BOARD 4 BTS ISOLATORS

–48 V 5AH

SHUNT BTS LVD

COMMS LVD

–48 V DC COMMS OUTPUTS 1

2

C2 1n

3

4 48 V BATTERY 48 V BATTERY COMMS ISOLATORS

FAN TRAY

Figure 1-3 BBS simplified circuit diagram

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The battery strings
Up to eight 12 V monoblocs are mounted in the bottom of the BBS cabinet (but only six are visible). The monoblocs are arranged as two battery strings, with four monoblocs connected in series to form one –48 V battery string. Each string can be individually isolated via circuit breakers on the circuit breaker panel. Although designed to accommodate two battery strings, the BBS may operate at reduced backup capacity with a single battery string installed. With no batteries installed, the BBS will continue to operate as a –48 V dc power supply provided an ac supply is present. Extra backup capacity may be obtained by connecting one or two additional external battery strings to the BBS. Figure 1-4 shows the arrangement of the 12 V monoblocs in the cabinet and the cable connections for two –48 V battery strings.

STRING 1 BLUE (–) STRING 1 BLACK (+) STRING 2 BLACK (+) STRING 2 BLUE (–)

BLACK

BLACK

BUS BAR LINK

Figure 1-4 Battery string arrangement in the BBS cabinet

WARNING There is a danger of explosion if the monoblocs are incorrectly fitted. Replace only with the same, or equivalent type (as recommended by the manufacturer). Dispose of used monoblocs in accordance with manufacturer’s instructions. Remove all monoblocs prior to transportation.

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Technical description

The fan tray
The fan tray is mounted immediately above the battery compartment and provides cooling for the rectifiers. The tray contains eight 48 V dc fans powered from a dc supply bus via a fuse mounted on the circuit breaker panel. The fans have three speed settings. Initially they run at full speed, but after five seconds, control of fan speed is determined by the incoming ambient air temperature, which is monitored by a sensor within the fan tray. At up to room temperature, the fans operate at the lowest speed. Above room temperature and up to 45 _C, the fans operate at the intermediate speed. If the temperature rises above 45 _C, the fans operate at full speed. On failure of any fan, the fans run at full speed, regardless of ambient temperature, to compensate for the loss of airflow. The control and alarm board monitors the operation of the fans. If one fan fails, a minor Single Fan Fail alarm condition is signalled to the master BTS cabinet by the control and alarm board and an LED on the module front panel is illuminated. If more than one fan fails, both minor Single Fan Fail and major > 1 Fan Fail alarm conditions are signalled to the master BTS and LEDs reporting both conditions are illuminated on the control and alarm board front panel. The control and alarm board ignores all fan fail signals when the ac supply to the BBS is not present.

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The rectifier modules
A minimum of three, and a maximum of seven, rectifiers can be installed in the BBS cabinet. Seven slots, located above the fan tray, are available to accommodate the rectifiers. These slots, labelled “RECTIFIER 0” to “RECTIFIER 6”, must be populated from right to left. The first three rectifiers are installed in slots 0, 1 and 2. Additional rectifiers, as and when required, are installed in sequence in the remaining slots. Any unused slots are covered with blanking panels to maintain the correct air flow through the BBS. Figure 1-5 shows a view of the rectifier module.

Figure 1-5 The rectifier module Table 1-1 shows the number of rectifiers that must be fitted to support different operational requirements. Table 1-1 Number of rectifiers required Number of BTSs connected 1 2 3 4 3 4 5 6 Number of rectifiers No redundancy required Redundancy required 4 5 6 7

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Technical description

Rectifier functional description
The rectifier is a power factor-corrected, wide input, ac power supply module. Each module is a switching type ac/dc power converter with the following regulated dc output: S S –54 V at 22.0 A (nominal). 1200 W (nominal).

The ac supply is fed to the rectifiers via the interface panel on the top of the BBS cabinet. When the BBS is supplied from a single phase ac input, the rectifiers are all supplied from a single source. When the BBS is supplied from a three phase ac input, the rectifiers are divided into three groups and each group supplied by a different phase of the ac input. For example, with all seven rectifiers fitted, the ac input is connected as follows: Phase 1 (L1) supplies rectifiers 0, 3 and 6 Phase 2 (L2) supplies rectifiers 1, and 4 Phase 3 (L3) supplies rectifiers 2 and 5 The regulated dc output is fed through circuit breakers on the circuit breaker panel to the Horizonmacro indoor BTS cabinets and also to the comms power connectors, via the COMMS LVD contactor. The outputs of each rectifier are connected in parallel and all rectifiers in the cabinet actively share the load.

Front panel LEDs
There are four LEDs mounted on the front of each rectifier, which indicate the following: S S S I/P HEALTHY (yellow) - lit when the input voltage is present and within specified limits. OVERVOLTAGE (red) - lit when the rectifier has shut down due to an output voltage in excess of –59.9 V dc. OVERCURRENT (red) - lit when the rectifier is in current limit and delivering a current in the range 22 A to 24 A. The LED is normally unlit, but when lit does not necessarily indicate the existence of a fault as this may be due to recharging of the batteries after an ac supply interruption. O/P HEALTHY (green) - lit when the output voltage is present and within specified limits (–39 to –59.9 V dc).

S

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Figure 1-6 shows a functional diagram of an individual rectifier module.
BACKPLANE CONNECTOR

YELLOW LED RED LED RED LED GREEN LED

I/P HEALTHY

VIN (88 V to 264 V) VOUT (–55 V)

OVERVOLTAGE OVERCURRENT O/P HEALTHY

ENABLE IN ENABLE OUT RELAY 1 ON RECTIFIER PCB

INPUT FAIL POWER CONVERTER AND SYSTEM MONITOR CONTROL AND ALARM BOARD

OUTPUT FAIL

CURRENT SHARE

OTHER RECTIFIERS

VOLTAGE TRIM AUXILIARY SUPPLY (12V)

CONTROL AND ALARM BOARD

Figure 1-6 Functional diagram of the rectifier module

Internal monitoring
Internal circuits monitor for the following: S S –54 V output voltage regulation. The –54 V output is also regulated to provide temperature compensation for the float charging of the BBS batteries in the range –52.88 V at 40 _C to –56.72 V at 0 _C. Overvoltage protection. This provides shutdown if the output voltage exceeds –59.9 V. Overcurrent protection. This provides constant current limiting at 22 to 23 A, unless the output voltage drops below 39.6 V, when the output current will fold back to between 3 and 8 A. Enable control of the rectifier module from the control and alarm board.

S S

S

Thermal protection
The rectifier module is provided with additional internal thermal protection. It shuts down if its ambient temperature exceeds a safe level, causing an alarm message to be sent to the control and alarm board. Normal operation of the rectifier module resumes after the temperature returns to a safe level.

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Technical description

The control and alarm board
The control and alarm board is a microprocessor controlled module designed for use with the Horizonmacro indoor battery backup system. Mounted to the left of the rectifiers, it performs the following functions: S S S S S S S Monitors the ac supply. Monitors rectifier output. Monitors battery output. Controls the LVD contactors. Controls battery charging. Generates alarm signals. Tests battery string capacity.

BTS LVD Closed Comms LVD Closed Battery Charged Battery Fail Single Rect Fail > 1 Rect Fail System Over Temp Contactor Open LVD Imminent Single Fan Fail > 1 Fan Fail Door Open Mains Fail

Status OK

Reset Battery Test String 2 String 1 Volts Current

Float Voltage Adj

Card Power 1A H

Figure 1-7 Control and alarm board front panel

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Control and alarm board front panel controls and indicators
The front panel of the control and alarm board is illustrated in Figure 1-7. It contains the following controls and indicators: S S S S S S S S Four green status LED indicators. Ten red alarm LED indicators. Alarm Reset button. Battery Test button. Float Voltage Adjustment control. Monitor point for battery string current and voltage measurements. Buttons for selecting voltage or current measurement. Switch for selecting battery string 1 or 2.

In addition, the front panel houses a 1 A fuse, providing protection for the control and alarm board.

Status LEDs
Table 1-2 identifies the four green status LEDs. These are normally illuminated.

Table 1-2 Status LEDs Status LED BTS LVD Closed Comms LVD Closed Battery Charged Description BTS LVD contactor closed. Comms LVD contactor closed. Battery strings in fully charged condition. The LED is unlit while current is flowing into the batteries. A flashing LED indicates that a battery test is in progress. No alarms (excluding Door Open alarm) are present. (Does not include battery charge status.)

Status OK

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Technical description

Alarm LEDs
Table 1-3 identifies the ten red alarm LEDs. These are normally unlit (closed contact), and are illuminated only when an alarm condition occurs.

Table 1-3 Alarm LEDs Alarm LED Battery Fail Single Rect Fail >1 Rect Fail System Over Temp Major/minor minor minor major minor Description Battery capacity fallen by 50%. Failure of a single rectifier. Failure of two or more rectifiers. Cabinet temperature has exceeded 70 _C. The LED is extinguished when the temperature reduces to 55 _C. One, or both, of the LVD contactors is in the open state. Bus voltage has dropped to 42.5 V dc due to battery discharge. (The BTS LVD contactor opens at 41 V dc.) Failure of a single fan unit. The remaining fans will speed up to compensate. Failure of multiple fan units. The remaining fans will speed up to compensate. Door status contacts open. This alarm does not affect the Status OK LED (see Table 1-2). The supply voltage has dropped below 88 V ac. (When the Mains Fail alarm is active, Fan Fail alarms from the fan tray are ignored. The control and alarm board continues to program the rectifier program port to match the battery string voltage. This ensures that there is no large current spike from the rectifiers when power is restored).

Contactor Open LVD Imminent

major minor

Single Fan Fail > 1 Fan Fail Door Open Mains Fail

minor major minor major

Reset button
Pressing the Reset button on the control and alarm board front panel resets the board and clears any alarms, provided the alarm conditions are no longer present.

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Battery test
The control and alarm board can perform a battery test which, when initiated, reduces the output from the rectifiers to 43 V dc (5 V below the battery voltage). This results in any load connected to the system to be fed directly from the batteries. Hence, battery capacity can be calculated by continuously monitoring battery current, voltage and time. Battery capacity is dependent on the number of battery strings connected. A four-position dipswitch (SW3) mounted internally on the control and alarm board allows selection of 1, 2, 3 or 4 battery strings of 65 amp-hours each. The switch default setting is 2, referring to the two –48 V dc internal battery strings. Positions 3 or 4 may be selected if additional external battery strings are connected. The battery test may be initiated by one of the following methods: S S S Automatically carried out by the control and alarm board on a monthly basis. Locally, by operation of the front panel Battery Test switch. Remotely, via the Battery Test Initiate connection (see Table 1-5).

The green Battery Charged LED on the control and alarm board front panel flashes when the unit is undergoing a battery test. If the battery voltage remains above 44 V for the duration of the test, the batteries are considered good, the test is terminated and the system returns to normal operation. If the battery voltage falls to 44 V, then the test is terminated prematurely, a FAIL signal is indicated on the AUX ALARMS connector and the Battery Fail LED is illuminated. If neither a PASS or FAIL signal is produced after testing, then the control and alarm board automatically initiates another test, every five hours, until a PASS or FAIL result is achieved. The battery test facility is not available if the batteries are not charged, or if any alarm condition is present other than the Door Open or Battery Fail alarms. The same alarms occurring at any time during a test cause the test to be terminated immediately and the system returns to normal operation with no battery test result. If the battery test is not valid when an automatic monthly test is attempted, the alarms module will retry to initiate the test every five hours until it can proceed.

Float voltage adjustment
Adjustment of the battery float (charging) voltage is not normally required. However, if required, adjustment can be carried out using the Float Voltage Adj potentiometer on the front panel of the control and alarm board. However, this must only be adjusted when the green Battery Charged LED is illuminated. NOTE If the Battery Charged LED is unlit, it indicates that the batteries are not fully charged. The control and alarm board continually adjusts the rectifier output to quickly recharge the batteries. Any adjustment of the Float Voltage Adj potentiometer at this point is opposed by the control and alarm board.

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Technical description

Battery string voltage and current measurement
Two 4 mm sockets are provided on the front panel of the control and alarm board for connection to an external meter to allow measurement of internal battery string current and voltage. The String 2 / String 1 toggle switch is used to select the battery string to be measured. The pushbutton Volts / Current switch selects measurement of either voltage or current (button in = current, button out = voltage). Since both battery strings are connected in parallel when battery breakers 1 and 2 are in the ON position, all measurements represent the total volts/current of both strings combined, irrespective of the position of the String 1 / String 2 toggle switch. To measure individual string voltage/current it is first necessary to turn off the battery breaker of the string that is not being measured. So, to measure String 1 voltage/current it is first necessary to turn off the string 2 battery breaker. Conversely, to measure String 2 voltage/current it is first necessary to turn off the string 1 battery breaker. The output from the 4 mm sockets is 1 V per volt for voltage measurements and 0.5 mV per amp for current measurements. A positive current reading indicates that the battery string is charging and a negative reading indicates that the battery string is discharging.

Control and alarm board functions
Battery charge current limiting
Battery charging current limit is achieved primarily via the control of the rectifier output voltage and secondarily by the current limit of the rectifiers. On power up, the contactors are closed and the rectifiers are at nominal output voltage (–54 V dc), the control and alarm board takes around five seconds to gain control, so for this duration battery charging current is limited to the maximum output current of the rectifiers (22 A to 23 A). When the board has gained control, battery current is monitored every two seconds and adjusted accordingly by means of programming the output voltage of the rectifiers. A typical battery charging characteristic is illustrated in Figure 1-8.
54 V BATTERY VOLTAGE

43 V BATTERY DEEPLY DISCHARGED BATTERY CHARGING AT MAXIMUM RATE NOMINAL BATTERY FLOAT VOLTAGE REACHED BATTERY NEARLY CHARGED 20 A +/–5 A BATTERY RECHARGE CURRENT 0A 2s

Figure 1-8 Typical battery charging characteristics for the BBS

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Battery temperature compensation
The control and alarm board regulates the output voltage of the rectifiers to increase or decrease the battery float voltage depending on temperature. Voltage regulation is controlled within the temperature range 0 _C to 40 _C, where voltage limits are 56.72 V and 52.88 V respectively. If the monitored temperature is beyond the control boundaries then the rectifier output is clamped to one of the limit values (56.72 V for temperatures below 0 _C, or 52.88 V for temperatures above 40 _C). Battery temperature is monitored by an onboard sensor, though an optional external temperature probe may be used.

Low voltage disconnect (LVD)
The control and alarm board continuously monitors the battery string voltage and provides protection from deep discharge by disconnecting the load. Two stages of low voltage disconnect are used. First, at 41 V, the BTS LVD contactor opens to disconnect the supply to the Horizonmacro BTS cabinets. Then, if the voltage falls to 39.5 V, the COMMS LVD contactor opens to disconnect the supply to customer communications equipment. A warning of impending LVD disconnect (LVD Imminent alarm) is generated by the control and alarm board when the battery string voltage drops to 42.5 V dc.

The circuit breaker panel
The circuit breaker panel is mounted at the top of the BBS cabinet, above the rectifiers. It provides four 63 A MCB circuit breakers for selectively controlling the dc output to each BTS cabinet and four 4 A circuit breakers for the power outlets for comms equipment. Two 200 A circuit breakers enable the individual battery strings to be isolated from the rest of the system. Three fuses are mounted on the panel for the two LVD contactors and the fan tray. The LVD contactors are mounted behind the circuit breaker panel. Figure 1-9 shows the circuit breaker and fuse locations on the panel.

STRING 2

STRING 1

4

3

2

1

4

3

2

1

FUSE 5A H

FUSE 1A H

FUSE 1A H

BATTERY BREAKERS FANS ALARMS BTS LVD COMMS LVD RECTIFIER 5 RECTIFIER 4

BTS BREAKERS

COMMS BREAKERS

RECTIFIER 6

RECTIFIER 3

RECTIFIER 2

RECTIFIER 1

RECTIFIER 0

Figure 1-9 The circuit breaker panel

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Technical description

The interface panel
The interface panel (see Figure 1-2) is mounted on the top of the BBS cabinet. In addition to providing the primary ac supply input to the BBS cabinet, it provides all the power and alarm connectors required for up to four Horizonmacro indoor cabinets, up to four customer supplied comms units and additional external battery backup.

Emergency stop facility
An optional external emergency stop button can be connected to the EMERG. STOP connector on the interface panel. The primary function of this button is to disconnect the battery power to all connected BTS cabinets in an emergency situation. The EMERG. STOP connector connects to the N/C contacts of the emergency stop button. When the emergency stop button contacts are opened, the BBS opens the BTS and COMMS LVD contactors, thus isolating the –48 V dc battery output. WARNING Opening the BTS and COMMS LVD contactors will only isolate the battery supply to the BTS and comms equipment. If the ac input to the battery backup system is still present then the dc output from the rectifiers will still be providing a –48 V dc supply to all connected equipment. The emergency stop button should be a double-pole switch with one connection to the BBS to disconnect battery power, and one connection to the ac supply to disconnect ac input power to the BBS. The emergency stop connector is fitted with a jumper plug, which MUST be fitted if the emergency stop facility is not used.

Alarm and signal connections
The control and alarm board monitors BBS health and generates alarm signals. In addition to alarms connected from the BBS to the master BTS, a single control signal (Battery Test Initiate) may be connected from the master BTS to the BBS. The BBS interfaces with the master BTS cabinet through the 25-way D-type BTS ALARMS connector (cable supplied), which connects to the External Alarms socket on the master Horizonmacro indoor interface panel. Additional alarms and control signals are available on the 15-way D-type AUX ALARMS connector (cable not supplied) and, if required, these may be connected to the Horizonmacro indoor cabinet PIX sockets. For each alarm, two wires are connected to a pair of normally closed (N/C) contacts within the control and alarm board. Activation of the alarm causes the contacts to open. Pinout information for the BTS ALARMS connector and the AUX ALARMS connector is shown in Table 1-4 and Table 1-5 respectively.

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Technical description

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BTS ALARMS connector
Table 1-4 shows the connector pin designations on the 25-way D-type female connector. Table 1-4 BTS ALARMS connector pin designations Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 Signal description Mains ac fail Low voltage disconnect imminent Rectifier fail single unit Rectifier fail > 1 unit Battery backup system overtemperature Single fan fail > 1 fan fail Door open Not connected Not connected Not connected Not connected Not connected Pin 14 15 16 17 18 19 20 21 22 23 24 25 Signal description Mains ac fail return Low voltage disconnect imminent return Rectifier fail single unit return Rectifier fail > 1 unit return Battery backup system overtemperature return Single fan fail return > 1 fan fail return Door open return Not connected Not connected Not connected Not connected

AUX ALARMS connector
Table 1-5 shows the connector pin designations on the 15-way D-type female connector. Table 1-5 AUX ALARMS connector pin designations Pin 1 2 3 4 5 6 7 8 Signal description Contactor open Not connected Battery test fail Not connected Battery test initiate Not connected Not connected Not connected Pin 9 10 11 12 13 14 15 Signal description Contactor open return Not connected Battery test fail return Not connected Battery test initiate return Not connected Not connected

Comms power connector
The pin designations for each of the Comms power connectors is as follows: Pin 1: –48 V dc Pin 2: 0 V Pin 3: Earth
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BBS specifications

BBS specifications
Overview of specifications
This section contains the specifications for the BBS equipment.

Power specifications
Input specifications
The Horizonmacro indoor battery backup system operates from either a single phase or a three phase ac supply. Table 1-6 shows the power requirements. Table 1-6 Input power requirements Supply voltage range (nominal) Single phase 120 / 230 V ac (45-66 Hz) Three phase and neutral (star configuration) 208 / 400 V ac (45-66 Hz) Maximum supply current 120 A @ 115 V, 50 A @ 230 V 50 A max per phase @ 208 V 22 A max per phase @ 400 V

Output specifications
Maximum output power: Output voltage (temperature compensated): 7300 W (1700 W per BTS x 4 + 125 W per comms unit x 4). Nominal: –54 V dc +/– 3%. Maximum: –59 V dc. Minimum: –39.5 V dc. Output current: 135 A at –54 V dc. 185 A at –39.5 V dc.

Rectifier efficiency
>= 82 % at nominal input voltage 110 V ac +/– 10 % and full output load.

Battery temperature compensation
Rectifier output voltage automatically adjusted to provide the batteries with the correct float voltage over the entire operating temperature range.

Electromagnetic compatibility
EN50081-1 EN50082-2 Light industrial emissions. Heavy industrial immunity.

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Batteries
Battery specifications
The specifications for the batteries used in the BBS are given in Table 1-7. Table 1-7 Battery specifications Internal External Type: Capacity: Description: Hawker SBS B14 lead-acid (x 8). 65 Ah each. 48 V string (2.27 V / cell @ 20 °C charging). Thermal compensation of –3.98 mV / cell per °C. Hawker SBS B14. 48 V. 180 A @ 41 V. 200 A, 10 000 A breaking capacity. 35 sq. mm minimum.

Recommended type: Nominal voltage: Maximum current: Circuit breaker rating: Cable cross-sectional area:

Battery backup duration
Table 1-8 shows the battery backup capability of the BBS for different equipment configurations. NOTE Where comms equipment is fitted, it is assumed that all four connectors are used, each adding 125 W to the load.

Table 1-8 BBS backup times for possible BTS configurations No. of BTS Cabinets Comms? Y/N Total Load (W) Standby Time (minutes) String 1 1 1 2 2 3 3 4 4 N Y N Y N Y N Y 1700 2200 3400 3900 5100 5600 6800 7300 85 57 36 30 22 21 13 12 String 1 + 2 170 115 72 60 45 42 27 24

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BBS specifications

Equipment protection
Protection for equipment contained in the BBS cabinet is described in Table 1-9. Table 1-9 BBS equipment protection Equipment Rectifiers Batteries (internal) Protection Overvoltage protection. Thermal protection. Two stage low voltage disconnect: BTS LVD level: 41.0 V (+/–0.5 V) COMMS LVD level: 39.5 V (+/–0.5 V) 200 A circuit breaker. 4 x 63 A circuit breakers. 4 x 4 A circuit breakers. Thermal (self-resetting)

BTS output Comms output System

Fuses
Fuses are fitted in the BBS cabinet to protect the equipment listed in Table 1-10. Table 1-10 Fuses Equipment Control and alarm board BTS LVD contactor coil COMMS LVD contactor coil Fan tray Fuse type 1 A HRC 1 A HRC 1 A HRC 5 A HRC

Dimensions
The dimensions are shown in Table 1-11. Table 1-11 Dimensions Height BBS cabinet Stacking bracket 841 mm (excluding bracket) 184 mm Width 700 mm 700 mm Depth 500 mm (door closed) 449 mm (excluding door) 449 mm

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Weights
The weights are shown in Table 1-12. Table 1-12 Weight of cabinet with full complement of modules fitted Weight of cabinet (without batteries) 120 kg NOTE The BBS cabinet requires a minimum of two and a maximum of seven rectifiers, depending on customer requirements. Weights given above are for a full cabinet containing seven rectifiers. Each rectifier weighs 4.6 kg. Weight of cabinet (with batteries) 270 kg

Environment
The environmental limits for the BBS cabinet are shown in Table 1-13. Table 1-13 Environmental limits Environment Operating Temperature –5 _C to + 45 _C Relative Humidity 5% to 100% relative humidity, not to exceed 0.029 g/m3 water/g dry air. 8% to 100% relative humidity, not to exceed 0.029 g/m3 water/g dry air.

Storage (packaged)

–45 _C to + 70 _C

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Chapter 2

Installing the battery backup system

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Chapter 2 Installing the battery backup system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tools required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparing the site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview of site preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BBS specifications and site requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Equipment delivery and unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Delivery and unpacking overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Unpacking the cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview of BBS installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparing the BBS cabinet for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BBS cabinet installation options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cable connections to the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview of cable connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting dc output power cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Comms power output cable connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Alarm and signal cable connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting the emergency stop cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Earthing the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting single phase ac input cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting three phase ac input cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing the internal batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to internal battery installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Setting the battery string dipswitch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Battery installation safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Procedure for installing the internal batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Connecting external battery strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to external battery strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety precautions for connecting external batteries . . . . . . . . . . . . . . . . . . . . . . . Connecting an external battery string . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installing the rectifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to rectifier installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rectifier installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stacking an Horizonmacro indoor cabinet on the BBS cabinet . . . . . . . . . . . . . . . . . . . . Fitting the stacking bracket onto the BBS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fitting an Horizonmacro indoor cabinet onto the stacking bracket . . . . . . . . . . . . Commissioning the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pre-power up checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Powering up the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Powering down the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Decommissioning the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Before starting to decommission the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . Procedure to remove a stacked Horizonmacro indoor cabinet . . . . . . . . . . . . . . . Procedure to decommission the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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2–1 2–1 2–1 2–1 2–2 2–2 2–2 2–4 2–4 2–5 2–6 2–6 2–7 2–8 2–10 2–10 2–11 2–11 2–12 2–13 2–13 2–14 2–15 2–16 2–16 2–17 2–18 2–19 2–22 2–22 2–22 2–22 2–23 2–23 2–24 2–26 2–26 2–27 2–28 2–28 2–28 2–29 2–30 2–30 2–30 2–31

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Installation overview

Installation overview
Safety precautions
Observe all relevant safety precautions. In particular, the following safety precautions must be observed when installing the equipment described in this supplement: WARNING This equipment must only be installed by trained personnel. S S S S Installation and commissioning must comply with all relevant national and regional regulations. The equipment must only be installed in a location which has controlled access. The BBS cabinet must be bolted to the floor (unless it is to be mounted on top of an M-Cell6 battery box). Insulated tools must be used to connect battery terminals.

Installation options
The following installation options are available for the BBS: S S S Stand-alone, next to an Horizonmacro indoor cabinet. Beneath an Horizonmacro indoor cabinet. On top of a single M-Cell6 battery box.

Once installed, the BBS provides primary dc power (–48 V) for up to four Horizonmacro indoor cabinets, and also provides battery backup to maintain power to the four cabinets for more than 20 minutes in the event of loss of primary ac power. If the battery backup system is to be installed as an addition to an in-service –48 V Horizonmacro indoor installation, then it will be necessary to power down the in-service equipment prior to connecting the BBS. Also, if the BBS is to be fitted beneath an in-service Horizonmacro indoor cabinet then a special BBS stacking bracket must be fitted on top of the BBS cabinet. For details of Horizonmacro indoor cabinet power down and removal procedures refer to Installation and Configuration: Horizonmacro Indoor (GSM-205-423). This chapter describes the procedures required to install a BBS in a stackable configuration beneath an Horizonmacro indoor cabinet. Installation of a BBS next to an Horizonmacro indoor cabinet is essentially the same, but without the need for the additional stacking bracket. The procedure for installing the BBS on top of an M-Cell6 battery box is also described separately in this chapter.

Tools required
The recommended tools required to install a BBS are listed in Installation and Configuration: Horizonmacro Indoor (GSM-205-423).

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Preparing the site

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Preparing the site
Overview of site preparation
The battery backup system is primarily intended for use with the Horizonmacro indoor BTS cabinet. The site requirements and considerations applicable to the Horizonmacro indoor are equally applicable to the BBS. Refer to Installation and Configuration: Horizonmacro Indoor (GSM-205-423) Introduction and site preparation for site preparation details.

BBS specifications and site requirements
The BBS cabinet dimensions, weights and environmental limits are described in Chapter 1, BBS specifications. WARNING The BBS cabinet, with all modules fitted, weighs 120 kg without batteries and 270 kg with all eight batteries installed. For safety reasons, the batteries are shipped separately from the BBS cabinet. Observe the correct lifting precautions when handling the cabinet and do not attempt to lift the cabinet with the batteries installed. CAUTION The BBS is intended to be installed with an Horizonmacro indoor cabinet mounted above it on a stacking bracket. The combined weight of the stacked cabinets is 400 kg. Ensure the floor is capable of supporting this weight. If an Horizonmacro indoor cabinet is to be fitted above the BBS, then adequate height clearance must be allowed for both cabinets and the stacking bracket (a total of 1900 mm when a hood fitted on top of the Horizonmacro indoor). Adequate clearance must be provided at the front of the equipment for operation and maintenance purposes. There must be adequate side clearance (50 mm) to enable the door to open at 95° and, for easy access to batteries and modules, this may be increased to 500 mm to allow the door to open to 130°. NOTE If an Horizonmacro indoor cabinet is to be installed on top of the BBS, then side clearances required for indoor cabinet ventilation must also be considered. Ventilating air is drawn in through the grille at the bottom of the BBS cabinet front, and through the grille on the front of the door. Air is expelled through the interface panel ventilated area on the top of the cabinet. When a stacking bracket is fitted, expelled air exits through the stacking bracket front grille, and through the area to the rear of the stacking bracket. Take care to ensure air flow is not restricted.
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Preparing the site

Figure 2-1 shows the BBS site layout plan with dimensions and required clearances.
700 mm

BBS CABINET

500 mm WITH DOOR CLOSED

500 mm WIDTH WHEN DOOR AT 130° DOOR AT SECOND POSITION (130°)

DOOR AT FIRST POSITION (95°)

Figure 2-1 BBS cabinet site layout plan view

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Equipment delivery and unpacking

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Equipment delivery and unpacking
Delivery and unpacking overview
Package delivery
Before the cabinet equipment arrives, installation personnel should designate an area at the site where the equipment can be unloaded. This area should also be suitable for unpacking the equipment. Consult with the heavy freight or moving company and the owners of the building (if applicable) to select this area. CAUTION The cabinet equipment should be delivered to the site while still contained in its packaging. This is to protect the cabinet in transit and from moisture. The equipment should be carefully delivered to the site by the freight company, along with the necessary moving dollies and padding. Use the dollies and padding to move the equipment from the unloading area to the installation point. NOTE Keep all paperwork attached to the packaging, or found inside the cabinet. The keys for the cabinet are taped to the inside of the door.

Package contents
Most equipment modules are supplied already fitted in the cabinet. The exceptions to this are: S The rectifiers. The number of rectifiers supplied depends on customer requirements, and determines how many blanking panels are fitted in the rectifier rack. For example, if three rectifiers are ordered, four blanking panels will already be fitted in slots 3 to 6. S The 12 V monoblocs. The 12 V monoblocs are packaged and delivered separately for safety reasons. The number of monoblocs supplied (0, 4 or 8) depends on customer requirements. S Power cables. DC power cables for the BTS and comms power cables are ordered and packaged separately. S Sundry items. These include battery cables, link bars, alarm cable, mounting washers, etc. These are packed loose in the BBS battery compartment. S Stacking bracket. If a stacking bracket is required, this is packed separately, together with its front panel and fixing screws. The cabinet is packed in a cardboard container, secured to a wooden delivery base.
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Equipment delivery and unpacking

Unpacking the cabinet
WARNING The BBS cabinet weighs approximately 88 kg before the rectifiers and monoblocs are installed. Handle each cabinet with extreme care and in accordance with local health and safety regulations. To remove the cabinet from the wooden base: CAUTION Take care to avoid damaging the cabinet in any way, especially by scratching the outer surfaces. 1. 2. 3. 4. 5. 6. 7. Inspect the packaging for visible signs of damage. Cut and remove the three bands from around the packaging. Remove the lid, the four cardboard corner posts, and then lift off the outer cardboard sleeve. Carefully cut around the base of the sealed foil bag containing the cabinet. Lift the bag and top corrugated fitting off the cabinet. Remove the cabinet from the pallet. Remove the desiccant bag from the cabinet. Inspect the equipment immediately for damage (both inside and outside). Report the extent of any damage to the transport company.

The cabinet unpacking procedure is now complete. NOTE The packing material used by Motorola is non-returnable and should be disposed of safely.

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Installing the BBS cabinet
Overview of BBS installation
WARNING This equipment must only be installed by trained personnel.

Installing the BBS on the floor
The BBS may be installed next to or beneath an Horizonmacro indoor BTS cabinet. A special stacking bracket must be used when an indoor cabinet is to be stacked on top of the BBS cabinet. NOTE Regardless of whether or not an indoor cabinet is to be mounted on top of the BBS cabinet, the method of securing the BBS to the floor is the same. Installation comprises the following steps: S S S S Securing the BBS cabinet in position. Connecting cables to the BBS interface panel. Connecting external batteries (if required). If an Horizonmacro indoor cabinet is to be mounted on top of the BBS cabinet: – – S S S S Fitting the stacking bracket. Lifting the Horizonmacro indoor cabinet onto the stacking bracket and securing in position.

Connecting cables to the Horizonmacro indoor cabinet(s). Installing the internal batteries. Installing the rectifiers. Connecting input power.

Installing the BBS on top of an M-Cell6 indoor battery box
The BBS may be installed on top of a single M-Cell6 battery box. A stacking bracket is not required for this application. Installation comprises the following steps: S S S S S S S Installing the M-Cell6 battery box (assumed to have been previously installed). Lifting the BBS cabinet onto the M-Cell6 battery box and securing in position. Connecting cables to the BBS interface panel (same procedure as for use with Horizonmacro indoor cabinets). If required, connecting external batteries (same procedure as for use with Horizonmacro indoor cabinets). Installing the internal batteries (same procedure as for use with Horizonmacro indoor cabinets). Installing the rectifiers (same procedure as for use with Horizonmacro indoor cabinets). Connecting input power (same procedure as for use with Horizonmacro indoor cabinets).
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Installing the BBS cabinet

Preparing the BBS cabinet for installation
WARNING The floor construction at the intended site should be a smooth, level base and must be capable of taking the weight of the equipment (the BBS alone weighs 270 kg when fully equipped). The procedure for preparing the BBS cabinet for installation is as follows: 1. 2. Manoeuvre the cabinet into the desired position, ensuring the minimum clearances around the cabinet are maintained. Open the cabinet door, remove the following items and place safely to one side (letters in parentheses refer to Figure 2-2): – – – – 3. Undo the two M6 retaining screws (A) and withdraw the fan tray. Undo the two M6 retaining screws (B) and remove the battery cover. Undo the two M6 retaining screws (C) and remove the air inlet cover by lifting upwards and outwards. Undo the four M6 retaining screws (D) and remove the battery retaining bracket.

Remove the plastic bags containing the cables, screws, washers, etc. from the battery compartment.

(A) (B) (C)

(A) (B) (C)

BATTERY RETAINING BRACKET (HIDDEN)

(D)

(D)

(D)

(D)

Figure 2-2 Removing items prior to bolting down the BBS

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BBS cabinet installation options
The BBS cabinet can be installed either on the floor or on top of an M-Cell6 indoor battery box. Install the cabinet using one of the two following procedures, as appropriate:

Securing the BBS cabinet to the floor
WARNING The cabinet must be bolted to the floor using M12 anchor bolts (not supplied) and washers (supplied). This ensures safety from toppling if an Horizonmacro indoor BTS is mounted on top of the BBS. NOTE If the BBS is to be installed in a location where an Horizonmacro indoor cabinet or an M-Cell6 battery box was previously sited, the existing mounting holes can be used for bolting the BBS cabinet to the floor. The procedure for securing the BBS cabinet in position is as follows: 1. Using the mounting holes in the base of the BBS cabinet as a guide, mark the drilling positions in the floor. WARNING Wear safety glasses and a dust mask when drilling holes. CAUTION Drilling concrete flooring produces cement dust, which is harmful to equipment and wiring. Protect the cabinet and any nearby equipment from dust. Use a tarpaulin, cloth, or plastic sheeting to cover exposed equipment. Clean up any accumulated debris from the anchor installation carefully before exposing the equipment. Use drilling equipment suitable for cutting steel reinforced concrete. 2. 3. Move the cabinet well away from the drilling area. Drill out the four holes to a depth and clearance suitable for the M12 anchor bolts. Fit the M12 mounting anchors in the holes in the floor. Fit the three supplied washers onto each anchor bolt in the following order: Small flat washer. Shoulder washer. Large flat washer. 4. 5. Screw the anchor bolts into the anchors and tension up to expand the anchors. Remove and retain the M12 bolts and washers. Position the BBS cabinet so that the mounting holes in the base line up with the anchor holes in the floor. Fit the anchor bolts and washers through the holes in the base and into the anchors. Torque each bolt up to the correct value for M12 bolts. NOTE Refer to the manufacturer’s data sheet for the correct torque values for the M12 anchor bolts.

6.

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Installing the BBS cabinet

Securing the BBS cabinet on an M-Cell6 indoor battery box
NOTE Although the BBS cabinet can be mounted on top of a single M-Cell6 battery box, the BBS itself is not designed for use with the M-Cell6 equipment. WARNING The floor must be capable of taking the combined weight of the M-Cell6 battery box and the BBS cabinet. The BBS cabinet can be mounted directly onto the top of an M-Cell6 battery box. A stacking bracket is not required for this application. The procedure for mounting the BBS cabinet on top of a previously installed M-Cell6 battery box is as follows: 1. 2. Remove the four plugs in the top of the battery box to expose the fixing holes. Store the plugs for future use. Remove the four M8 hex head bolts from the four lifting holes in the top panel of the BBS cabinet (the holes are identified by the word LIFT next to them). Screw M8 eyebolts into the four lifting holes. Lift the BBS cabinet onto the battery box, taking care to ensure that the holes on the base are aligned with the exposed threaded holes in the top of the battery box. Fit the three supplied washers onto the M12 bolts (supplied with the M-Cell6), insert the bolts through the holes in the base of the BBS cabinet and into the threaded holes on the battery box. Tighten the bolts to 40 Nm.

3. 4.

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Cable connections to the BBS cabinet

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Cable connections to the BBS cabinet
Overview of cable connections WARNING
All fixed installation wiring, earthing and protective devices must comply with the applicable national and regional wiring regulations. The BBS provides –48 V dc power for up to four Horizonmacro indoor cabinets. Four additional –48 V dc outputs are provided for customer communications equipment. Alarms and signals from the BBS cabinet are routed to the EXTERNAL ALARMS and PIX connectors on the indoor cabinet designated as the master. Primary ac power for the BBS is provided from either a single phase supply or from a three phase supply. The battery backup time provided by the BBS in the event of a failure of the ac supply may be extended by wiring in optional external battery strings. An optional emergency stop button may be connected to the BBS. This will disconnect the –48 V battery power in an emergency. The emergency stop connection only provides a battery disconnect facility, it does not disconnect the primary ac power source. All external cable connections are made from the interface panel on the top of the BBS cabinet. Figure 2-3 shows the positions of the connectors on the interface panel. NOTE If an indoor cabinet is to be stacked on top of the BBS cabinet, connect the cables to the BBS interface panel, but do not make the connections to the indoor cabinet until after the cabinet has been stacked (see Stacking an Horizon macro indoor cabinet on the BBS cabinet later in this chapter).

AUX ALARMS CONNECTOR BTS DC SUPPLY CONNECTORS EXTERNAL BATTERY CONNECTORS BTS ALARMS CONNECTOR COMMS POWER CONNECTORS

EARTH STUD AC SUPPLY CONNECTOR

EMERGENCY STOP CONNECTOR

EXTERNAL BATTERY

BTS POWER

BTS AUX ALARMS

COMMS POWER

EMERG. STOP

AC INPUT POWER

Figure 2-3 Connectors on the BBS interface panel
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Connecting dc output power cables
Four pairs of Anderson connectors are mounted on the BBS interface panel, enabling up to four Horizonmacro indoor cabinets to be connected to the BBS. The four pairs are labelled BTS POWER 1, 2, 3 and 4, and each individual pair comprises a black 0 V connector and a blue –48 V connector. When connecting dc power to the Horizonmacro indoor cabinets, observe the following rules: S S The negative (–48 V dc) power cable is blue . The positive (0 V) power cable is black.

The procedure for connecting each dc output power cable is as follows: 1. Route and secure a blue/black power cable pair from the BBS to the Horizonmacro indoor cabinet, ensuring adequate allowance is made to connect each end without causing undue strain on the cable. At the BBS, identify the BTS POWER connector pair to be used (1, 2, 3 or 4), then: Connect the black cable to the black Anderson connector. Connect the blue cable to the blue Anderson connector. 3. Refer to Installation and Configuration: Horizonmacro Indoor (GSM-205-423) Installing and connecting power and earth cabling for details of connecting dc power (positive earth) to the Horizonmacro indoor cabinet.

2.

Comms power output cable connections
The BBS provides four –48 V dc outputs to supply customer communications equipment. Connections for these outputs are mounted on the BBS interface panel in the form of four 3-way mate-n-lock sockets. Pinout details are as follows: Pin 1: –48 V dc (blue cable). Pin 2: 0 V (black cable). Pin 3: Earth (green/yellow cable).

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Alarm and signal cable connections
Alarm and signal connections to the Horizonmacro indoor master cabinet are made using the supplied 25-way to 37-way cable. The 25-way D-type plug connects to the socket marked BTS ALARMS on the BBS interface panel. The 37-way D-type plug connects to the socket marked EXTERNAL ALARMS on the indoor cabinet. NOTE The EXTERNAL ALARMS connector on the master Horizonmacro indoor cabinet interface panel is fitted with a shorting plug which must be removed to allow connection of the alarm cable from the BBS. The connections between the BTS ALARMS connector on the BBS interface panel and the EXTERNAL ALARMS connector on the master Horizonmacro indoor cabinet are shown in Table 2-1. Table 2-1 BBS to BTS alarm signal connections BBS interface panel BTS ALARMS connector Pin 1 2 3 4 5 6 7 8 9-13 14 15 16 17 18 19 20 21 Signal/Description Mains ac fail Master Horizonmacro indoor cabinet interface panel EXTERNAL ALARMS connector Pin 1 Signal/Description Mains ac 1 fail Low voltage disconnect alarm Rectifier 1 fail Rectifier 2 fail ANC CAB Overtemp alarm HMS 1 failure HMS 2 failure Door 2 open

Low voltage disconnect imminent 15 Rectifier fail single unit Rectifier fail > 1 unit BBS overtemperature Single fan fail > 1 fan fail Door open Not connected Mains ac fail return 2 19 21 29 5 7 25

Mains ac 1 fail return Low voltage disconnect return Rectifier 1 return Rectifier 2 return ANC CAB Overtemp return HMS 1 return HMS 2 return Door 2 return

Low voltage disconnect imminent 16 return Rectifier fail single unit return Rectifier fail > 1 unit return BBS overtemperature return Single fan fail return > 1 fan fail return Door open return 20 22 30 6 8 26

22-25 Not connected Additional alarm and signal connectivity is provided by the 15-way AUX ALARMS socket which may be connected by customers to the PIX alarms connector on the indoor cabinet. See The interface panel in Chapter 1 for alarm and signal details.
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Cable connections to the BBS cabinet

Connecting the emergency stop cable
A two-way mate-n-lock socket, labelled EMERG. STOP, is provided on the BBS interface panel for connection to a remote emergency stop button. When a button is fitted and the contacts are opened, the BBS causes the BTS and COMMS LVD contactors to open, so disconnecting battery power to the Horizonmacro indoor cabinet(s) and the customer communications equipment. WARNING Simply connecting an emergency stop button to the connectors on the EMERG. STOP socket does not disconnect the ac power supply to the BBS, and does not disable the dc output from the rectifiers. The ac power supply must also be disconnected to completely isolate the BBS. This can be achieved by using a double pole emergency stop switch, with one pair of contacts connected to the BBS interface panel to isolate the batteries, and the second pair of contacts connected externally to isolate the ac power supply to the BBS.

NOTE If the emergency stop facility is not used, then the jumper plug (a two-way mate-n-lock plug with pins linked together) must be fitted to the EMERG. STOP socket. The BBS will power up, but the batteries will be disconnected from the system if the jumper plug is not fitted.

Earthing the BBS cabinet
BBS cabinet earthing is provided by the earth cable from the ac power source, and by a supplementary earth connection to a 10 mm M6 threaded stud located on the BBS interface panel (see Figure 2-3). It is important to make both earth connections. See Connecting single phase ac input cables or Connecting three phase ac input cables for connecting the earth cable from an ac power source. WARNING The BBS cabinet must be earthed separately, and must not be daisy chained to another cabinet. The procedure to fit the supplementary earth connection is as follows: 1. 2. Locate a suitable earth point (refer to Grounding guidelines for cellular radio installations: 68P81150E62 for detailed earthing information). Connect an earth wire from the earth point to the earth stud on the BBS interface panel. Tighten to a torque of 3.4 Nm.

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Connecting single phase ac input cables
If a wired-in single phase ac supply is to be used, then an external double pole local isolator or disconnection device must be fitted so that the BBS cabinet can be isolated from the ac power source. WARNING Ensure the ac power supply input has been safely isolated, so that there is no risk of power being applied to the cable during the installation procedure. The source should be isolated and locked, and a suitable warning label attached. CAUTION For connecting to a single phase ac supply ensure that the correct cable rating is used. For a 230 V ac input the cable should be 6.0 sq. mm, rated at 50 A. For a 120 V ac input the cable should be 25.0 sq. mm, rated at 120 A. Connect the single phase ac supply to the BBS as follows: 1. Remove the access plate from the front of the terminal block housing by undoing the two Torx screws. Remove the sealed bag containing the link bar from behind the access plate and extract the link bar. Slacken the live, neutral and earth terminal screws. Remove the three link bar retaining M4 screws, spring washers and spacers from the terminal block. Remove the spacers from the screws, insert the screws through the holes in the link bar, refit the spacers and screw the link bar onto the terminal block (see Figure 2-4). Remove the appropriate blanking plug from the terminal block housing and fit the plastic cable gland (supplied). Route the three core supply cable to the terminal block housing. Ensure that the cable is routed so that it does not present a hazard, and is not likely to be damaged accidentally. Feed the cable through the gland to the terminal block. Connect the live wire to L1, the neutral wire to N, and the earth wire to terminal block. Refit the access plate to the terminal block housing.
TERMINAL BLOCK HOUSING

2. 3.

4. 5.

6.

on the

CABLE GLAND FITTING OPTIONS

LINK BAR N LINK BAR RETAINING SCREW TERMINAL BLOCK L1 L2 L3

LINK BAR ASSEMBLY DETAIL

Figure 2-4 Single phase ac input connections to the BBS WARNING Do not connect the cable to the ac supply yet. Leave the plug disconnected or the isolator in the OFF position, with a suitable warning label attached.

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Cable connections to the BBS cabinet

Connecting three phase ac input cables
If a wired-in three phase ac connection is required, then an external four pole isolator or disconnection device must be used. WARNING Ensure the ac power supply input has been safely isolated, so that there is no risk of power being applied to the cable during the installation procedure. The source should be isolated and locked, and a suitable warning label attached. CAUTION For connecting to a three phase ac supply ensure that the correct cable rating is used. For a 400 V ac three phase input, the cable should be 2.5 sq. mm, rated at 22 A. For a 208 V ac three phase input, the cable should be 6.0 sq. mm, rated at 50 A. Connect the three phase ac supply to the BBS in a star configuration as follows (see Figure 2-5): 1. Remove the access plate from the front of the terminal block housing by undoing the two Torx screws. Remove the sealed bag containing the link bar from behind the access plate and store for possible future use. Slacken the live, neutral and earth terminal screws. Remove the appropriate blanking plug from the terminal block housing and fit the plastic cable gland (supplied). Carefully route the five core supply cable to the terminal block housing so that it does not present a hazard, and is unlikely to be damaged accidentally. Feed the cable through the gland to the ac input terminal block. Connect the phase 1 wire to L1, the phase 2 wire to L2, the phase 3 wire to L3, the neutral wire to N, and the earth wire to on the terminal block. Refit the access plate to the terminal block housing.
TERMINAL BLOCK HOUSING

2. 3. 4.

5.

CABLE GLAND FITTING OPTIONS

N

L1 L2 L3

TERMINAL BLOCK

Figure 2-5 Three phase ac input connections to the BBS WARNING Do not connect the cable to the ac supply yet. Leave the plug disconnected or the isolator in the OFF position, with a suitable warning label attached.

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Installing the internal batteries

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Installing the internal batteries
Introduction to internal battery installation
For safety reasons, the internal batteries are supplied separately from the BBS cabinet. The monoblocs should be installed and connected as soon possible after the cabinet is secured in its permanent location. The eight monoblocs are arranged in two internal battery strings. Each string contains four 12 V monoblocs, connected in series to produce a –48 V dc output. The BBS is primarily designed for use with all eight monoblocs fitted, but will operate at reduced capacity with just four monoblocs (one string). One or two external battery strings can be connected to the BBS to increase the battery backup time. NOTE The BBS can also operate with no batteries installed. In this case the BBS simply operates as a –48 V dc supply for up to four Horizonmacro indoor cabinets.

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Installing the internal batteries

Setting the battery string dipswitch
A dipswitch (SW3) on the control and alarm board must be set at installation to identify the total number of battery strings in use, both internal and external. NOTE If two battery strings are to be installed, SW3 will not need to be set as this is the default factory setting. Figure 2-6 shows the position of the battery string dipswitch SW3 on the control and alarm board.

FRONT PANEL

SW3

Figure 2-6 Position of SW3 on the control and alarm board

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Procedure for setting the battery string dipswitch
The procedure for setting the battery string dipswitch is as follows: 1. 2. Undo the two retaining screws and withdraw the control and alarm board. Identify SW3 on the control and alarm board (see Figure 2-6) and set as indicated below: Total number of battery strings connected 1 2 3 4 3. Set SW3 to position 1 2 (factory setting) 3 4

Slide the control and alarm board back into the rack and secure in place with the retaining screws.

Battery installation safety precautions
Observe the following safety precautions when installing the monoblocs: WARNING Ensure the battery circuit breakers STRING 1 and STRING 2 are set to the OFF position. S S S S Use insulated tools when connecting monobloc terminals together, and when connecting battery strings to the circuit breakers. Remove jewellery and watches before starting to install the monoblocs. Do not use naked flames near the monoblocs. The battery cables, cable sleeves and terminals are colour coded: BLUE is negative (–ve). BLACK is positive (+ve). Blue sleeved blue cables must only be connected to blue terminals. Blue sleeved black cable terminations must only be connected to blue terminals. Red sleeved black cable terminations must only be connected to red terminals. S Each cable is labelled for identification. For example, “STR1 BATT2 –VE” on a blue sleeved black cable means that it connects to the negative terminal on the string 1 number 2 monobloc. Do not remove the insulated boot from each battery cable termination until immediately before connecting the cable to the monobloc. Do not leave exposed cables loose in the cabinet. The battery cables must be laid exactly as shown in Figure 2-8 and must not cross over each other. If only one battery string is to be installed, ensure that the cables to the unused string 2 are insulated from the cabinet and each other by fitting the insulating boots provided.
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S S S S

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Installing the internal batteries

Procedure for installing the internal batteries
The BBS cabinet is already prepared for the monoblocs to be installed (see Preparing the BBS cabinet for installation earlier in this chapter). Remove the monoblocs, terminal bolts and spring washers from their packaging. Smear a small amount of light grease onto the bolt threads prior to fitting. Refer to Figure 2-7 and Figure 2-8 and proceed as follows to install the monoblocs in the BBS cabinet: WARNING Observe the safety precautions given in the previous section. There is a danger of explosion if the monoblocs are installed incorrectly.

Installing a single battery string
1. Slide monobloc 1–1 into position. Fit the bolt and spring washer to the red sleeved (+) termination of the black cable marked “STR1 BATT1 +VE” and connect it to the red (+) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Fit the bolt and spring washer to the blue sleeved (–) termination of the blue cable marked “STR1 BATT1 –VE” and connect it to the blue (–) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. 2. Slide monobloc 1–2 into position and connect the blue sleeved (–) termination of the black cable marked “STR1 BATT2 –VE” to the blue (–) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Slide monobloc 1–3 into position. Slide monobloc 1–4 into position and connect the red sleeved (+) termination of the black cable marked “STR1 BATT4 +VE” to the red (+) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Check that all cables in string 1 are connected correctly and then fit the bus bar links between monoblocs 1–2 and 1–3, 1–3 and 1–4. Tighten the bolts to 5 Nm and fit the nut caps.

3. 4.

5.

Installing two battery strings
1. Slide monobloc 2–1 into position. Fit the bolt and spring washer to the blue sleeved (–) termination of the blue cable marked “STR2 BATT1 –VE” and connect it to the blue (–) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Fit the bolt and spring washer to the red sleeved (+) termination of the black cable marked “STR2 BATT1 +VE” and connect it to the red (+) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. 2. Slide monobloc 2–2 into position and connect the red sleeved (+) termination of the black cable marked “STR2 BATT2 +VE” to the red (+) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Slide monobloc 2–3 into position. Slide monobloc 2–4 into position and connect the blue sleeved (–) termination of the black cable marked “STR2 BATT4 –VE” to the blue (–) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Install the first battery string, as described previously. Note that it may be easier to make the connections to monobloc 1–1 before it is slid into position. Check that all cables in string 2 are connected correctly and fit the bus bar links between monoblocs 2–2 and 2–3, 2–3 and 2–4. Tighten the bolts to 5 Nm and fit the nut caps.

3. 4.

5. 6.

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STRING 1 BLUE (–) STRING 1 BLACK (+) STRING 2 BLACK (+) STRING 2 BLUE (–)

BLACK

BLACK

BUS BAR LINK

Figure 2-7 Terminal connections for the monoblocs

2–1

1–1

2–2

2–3

2–4

1–4

1–3

1–2

Figure 2-8 Battery cable path, viewed from above

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Installing the internal batteries

Refitting the bracket, covers and fan tray Proceed as follows to complete the installation of the internal batteries (letters in parentheses refer to Figure 2-9):
1. 2. 3. 4. Fit the battery retaining bracket and secure in position with the four M6 retaining screws (A). Refit the air inlet cover and secure in position using the two M6 retaining screws (B). Refit the battery cover and secure in position using the two M6 retaining screws (C). Slide the fan tray into position beneath the rectifier rack. Secure in position using the two M6 retaining screws (D).

(D)

(D)

(C)

(C)

(B)

(B)

BATTERY RETAINING BRACKET (HIDDEN)

(A)

(A)

(A)

(A)

Figure 2-9 Refitting the battery retaining bracket, covers and fan tray

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Connecting external battery strings

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Connecting external battery strings
Introduction to external battery strings
In the event of a failure of the main ac supply, the internal BBS batteries will maintain power to the connected Horizonmacro indoor cabinets for a period depending on the number of cabinets connected. Extended battery backup time may be obtained by connecting a maximum of two additional external battery strings to the BBS.

Safety precautions for connecting external batteries
Observe the following safety precautions when connecting external battery strings to the BBS: S S S S S Each additional battery string must be 48 V. Ensure that the batteries used comply with the external battery specifications given in Chapter 1. External battery strings MUST have circuit breakers fitted at source. Observe the polarity of the EXTERNAL BATTERY connectors on the BBS interface panel. Read the Battery installation safety precautions given earlier in this chapter.

Connecting an external battery string
Proceed as follows to connect an external battery string to the Anderson connectors on the interface panel: 1. 2. Ensure that the external circuit breaker for the external battery string is switched OFF. Remove the protective cover from the EXTERNAL BATTERY connectors and store for future use. NOTE If the external battery string is subsequently removed, the protective cover MUST be refitted. 3. Connect the cable pair from the external battery string to the –48 V and 0 V EXTERNAL BATTERY connectors on the BBS as follows: Negative (–48 V) cable to the blue (–48 V) connector. Positive (0 V) cable to the black (0 V) connector. NOTE If additional battery strings are added after the BBS has been put into service, the position of SW3 on the control and alarm board must be changed to match the total number of battery strings connected (refer to Setting the battery string dipswitch earlier in this chapter). 4.
2–22

Switch ON the external circuit breaker.
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Installing the rectifiers

Installing the rectifiers
Introduction to rectifier installation
The rectifiers are ordered separately from the BBS cabinet. For this reason, they are packed separately and must be installed after the BBS has been secured in position. Blanking panels, used to cover unused rectifier slots, are already installed in the rectifier rack. A minimum of three and a maximum of seven rectifiers may be installed in the BBS. Table 2-2 shows the configuration options available. Table 2-2 Rectifier configuration options Number of BTSs connected 1 2 3 4 3 4 5 6 Number of rectifiers No redundancy required Redundancy required 4 5 6 7

Figure 2-10 shows an illustration of the rectifier module.

Figure 2-10 The rectifier module

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Installing the rectifiers

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Rectifier installation procedure
CAUTION Handle the rectifier with care. The module weighs 4.6 kg. Proceed as follows to install the rectifiers: 1. 2. 3. 4. Carefully unpack the rectifiers and inspect for signs of damage. Remove any loose labels attached to the rectifiers. Open the BBS cabinet door. Insert each rectifier in the open slots in the rack, starting from the right-hand side (RECTIFIER 0 position). Ensure the rectifiers are pushed fully home into their connectors on the backplane before tightening the M6 retaining screws to a torque of 3.4 Nm. CAUTION The blanking panels maintain the correct airflow through the cabinet. They must not be removed from unused rectifier slots unless additional rectifiers are to be fitted. The procedure for installing the rectifiers is now complete. Figure 2-11 shows a fully equipped BBS cabinet.

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Installing the rectifiers

Figure 2-11 Fully equipped BBS cabinet

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Stacking an Horizonmacro indoor cabinet on the BBS cabinet

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Stacking an Horizonmacro indoor cabinet on the BBS cabinet
Fitting the stacking bracket onto the BBS
The stacking bracket (see Figure 2-12) must be fitted if an Horizonmacro indoor cabinet is to be stacked on top of the BBS.
M10 BOLT MOUNTING HOLE (FOR INDOOR CABINET PLINTH)

M8 SCREW MOUNTING HOLE (FOR BBS)

Figure 2-12 BBS stacking bracket The procedure for fitting the stacking bracket onto the top of the BBS is as follows: 1. 2. Remove the eight hex head bolts from the mounting holes in the top of the BBS (see Figure 2-13) and store for future use. Place the stacking bracket on the top of the BBS so that the holes in the stacking bracket feet line up with the mounting holes in the top of the interface panel. Ensure the bracket is the correct way around (see Figure 2-12). Secure the mounting bracket to the BBS by fitting the eight M8 x 16 Torx screws (supplied), and tightening to a torque of 5.4 Nm.
MOUNTING HOLES MOUNTING HOLES

3.

VENTILATED AREA

MOUNTING HOLES

MOUNTING HOLES

Figure 2-13 Stacking bracket mounting holes on the BBS
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Stacking an Horizonmacro indoor cabinet on the BBS cabinet

Fitting an Horizonmacro indoor cabinet onto the stacking bracket
The procedure for fitting an Horizonmacro indoor cabinet on the stacking bracket is given below. This procedure assumes that the BBS cabinet has been bolted to the floor and all connections to the BBS interface panel have already been made 1. 2. 3. 4. Mount the indoor cabinet on its plinth, as described in Installation and Configuration: Horizonmacro Indoor (GSM-205-423), Fitting cabinet onto plinth. Attach M8 eyebolts to the four lifting holes in the top panel of the indoor cabinet. The holes are identified by the word LIFT next to them. Using suitable lifting equipment, lift the indoor cabinet onto the stacking bracket and align the holes in the plinth with the holes in the top of the stacking bracket. Fit M10 flat washers to four M10 x 20 bolts. Insert the bolts through the holes in the underside of the top crossmembers of the stacking bracket and screw into the underside of the plinth. Tighten the bolts to 10 Nm. Make all the connections between the BBS and the Horizonmacro indoor cabinet. Fit the stacking bracket front cover by lining up the pins on the inside of the cover with the holes in the stacking bracket legs and pushing firmly until the pins lock.

5. 6.

Figure 2-14 shows a completed installation.

HORIZONMACRO INDOOR CABINET

STACKING BRACKET

STACKING BRACKET FRONT COVER

BBS CABINET

Figure 2-14 Fully equipped BBS with stacked Horizonmacro indoor cabinet

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Commissioning the BBS cabinet
Pre-power up checks
All relevant installation procedures described earlier in this chapter must have been carried out before the BBS cabinet is commissioned. Make the following pre-power up checks on the equipment: S S S Ensure that the isolator at the ac supply to the BBS cabinet is switched OFF. Ensure all BBS circuit breakers and external circuit breakers for external battery strings (if installed) are switched OFF. If an emergency stop switch is not connected to the BBS, ensure that the shorting link is fitted to the EMERG. STOP socket. The BBS cabinet will power up, but the batteries will remain disconnected if this link is not fitted. WARNING The protective cover for the EXTERNAL BATTERY connectors must be fitted if the connectors are not used.

Powering up the BBS cabinet
This procedure assumes that the pre-power up checks have been completed. Proceed as follows to power up the BBS cabinet: 1. 2. 3. Switch on the external ac supply to the BBS cabinet. Check the rectifier module LEDs. The yellow I/P HEALTHY LEDs and the green O/P HEALTHY LEDs should be illuminated. The red alarm LEDs should be unlit. Check the control and alarm board LEDs. The green LEDs, BTS LVD Closed and Comms LVD Closed, should be illuminated. All red alarm LEDs should be unlit, with the exception of the Door Open LED. Pressing the door switch should cause the Door Open LED to extinguish and the green Status OK LED should illuminate. Switch on the COMMS circuit breakers (1, 2, 3 or 4, as required). Switch on the BTS circuit breakers (1, 2, 3 or 4, as required). Switch on the battery circuit breakers (STRING 1 and/or STRING 2 as required). NOTE The Battery Charged LED may or may not be illuminated, depending on the charge state of the batteries. The red OVERCURRENT LEDs on the rectifiers may be illuminated. This does not necessarily indicate a fault and may be due to recharging of the batteries. The OVERCURRENT LEDs may flicker when the BBS is first switched on – this is normal and does not indicate a fault in the system. 7. Close the door to ensure correct ventilation.

4. 5. 6.

This completes the BBS power up procedure.
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Commissioning the BBS cabinet

Powering down the BBS cabinet
CAUTION If the BBS cabinet is supplying dc power to Horizonmacro indoor equipment and/or customer communications equipment, first ensure that this equipment is powered down before powering down the BBS. Proceed as follows to power down the BBS cabinet: 1. 2. 3. If external battery strings are connected to the BBS, switch OFF the external circuit breakers. Switch all BBS circuit breakers to OFF. Switch OFF the external ac supply to the cabinet.

This completes the BBS power down procedure.

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Decommissioning the BBS cabinet

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Decommissioning the BBS cabinet
Before starting to decommission the BBS cabinet
Before starting to decommission the BBS cabinet, ensure that: S S S S S Horizonmacro indoor cabinets and any customer communications equipment connected to the BBS are switched off. The ac power cable to the BBS cabinet is switched OFF and disconnected at source. The backup battery strings (internal and external) are isolated or disconnected and all circuit breakers on the BBS are in the OFF position. The dc power and alarm signal cables are disconnected from the BTS cabinet(s) and any comms equipment powered from the BBS. Sufficient packing cartons are available to pack the decommissioned equipment. WARNING Observe the same safety precautions for decommissioning as for installation.

Procedure to remove a stacked Horizonmacro indoor cabinet
If an Horizonmacro indoor cabinet has been stacked on top of the BBS cabinet, proceed as follows to remove the indoor cabinet: 1. Remove the stacking bracket front cover by applying gentle pressure to the outer edges while easing the cover up and pulling it away from the stacking bracket. Repack the cover ready for transportation. On the underside of the stacking bracket crossmembers, undo and remove the four M10 bolts and washers that secure the Horizonmacro indoor cabinet to the stacking bracket. Lift the indoor cabinet off the stacking bracket. Undo and remove the eight M8 Torx screws that secure the legs of the stacking bracket to the top of the BBS cabinet. Lift the stacking bracket off the top of the cabinet and repack ready for transportation. Refit the eight previously stored hex head bolts in the stacking bracket mounting holes on the top of the BBS cabinet. De-install the cabinet itself by following the procedure given next for a floor mounted cabinet (see Procedure to decommission the BBS cabinet). If the equipment is to be returned to Motorola, seal the shipping container and return as advised by the Motorola in-country project manager
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2.

3. 4. 5. 6. 7. 8.

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Procedure to decommission the BBS cabinet
Proceed as follows to decommission the BBS cabinet: WARNING Stow disconnected cables so that they do not create a hazard to personnel using the site.

Disconnecting cables from the interface panel
NOTE If an Horizonmacro indoor cabinet is stacked on top of the BBS, follow the Procedure to remove a stacked Horizonmacro indoor cabinet before disconnecting the cables from the interface panel. 1. 2. Disconnect the ac input power cable from the terminal block on the BBS interface panel. If fitted, remove the single phase link from the terminal block and place in a plastic bag (or retrieve from storage if not used). Tape the bag to the back of the terminal block access plate and then refit the plate. If used, disconnect the external battery string cables from the BBS interface panel. Refit the protective cover to the terminals. Disconnect all BTS and comms power cables from the interface panel. Disconnect the alarm cable from the BTS ALARMS connector on the interface panel. If used, disconnect the cable from the AUX ALARMS connector. If fitted, disconnect the emergency stop switch. Refit the shorting link to the EMERG. STOP socket on the interface panel. Disconnect the earth cable from the earth stud on the interface panel. If any cables are not to be used again for other equipment, dispose of safely.

3. 4. 5. 6. 7. 8.

Removing the rectifiers
The cabinet may be transported either with or without the rectifiers installed. However, it is easier to access the battery strings when the rectifiers are removed. If the rectifiers are to be removed, proceed as follows for each rectifier: 1. Undo the two M6 retaining screws on the rectifier front panel. CAUTION The rectifier module weighs 4.6 kg. Handle with care. 2. 3. Using the handle, withdraw the rectifier from the slot, supporting it from beneath with one hand as it emerges. Repack the rectifier ready for transportation.

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Decommissioning the BBS cabinet

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Removing the internal monoblocs
WARNING The internal monoblocs MUST be removed prior to transportation for safety reasons. Do not attempt to transport the cabinet with the monoblocs installed. Proceed as follows to remove the internal monoblocs: 1. Remove the fan tray, battery cover and air inlet cover to access the monoblocs (refer to Preparing the BBS cabinet for installation earlier in this chapter for information on removing these items). Remove the link bars between monoblocs 2–2 to 2–3, 2–3 to 2–4 and 1–2 to 1–3, 1–3 to 1–4. Disconnect all the remaining battery cables. Fit an insulating boot over each cable termination as soon as it is disconnected. Pack the cables, plastic nut covers and link bars ready for transportation. Undo the four M6 screws that secure the battery retaining bracket in position and remove the bracket. Remove each monobloc in turn and repack ready for transportation. Refit the battery retaining bracket.

2. 3.

4. 5. 6.

De-installing the cabinet (floor mounted only)
Proceed as follows to de-install a BBS cabinet which is bolted to the floor: 1. 2. 3. 4. 5. Undo and remove the four M12 mounting bolts and washers that secure the base of the BBS cabinet to the floor. Place the packed sundry items (cables, washers, link bars, etc.) in the battery compartment. Refit the fan tray, air inlet cover and battery cover. Refit the rectifiers, if the cabinet is to be transported with the rectifiers installed. Tape the keys to the cabinet on the inside of the door and then close the door. Move the cabinet to a location where it can be packed ready for transportation.

De-installing the cabinet (mounted on top of an M-Cell6 battery box)
Proceed as follows to de-install a BBS cabinet which is mounted on top of an M-Cell6 indoor battery box: 1. 2. 3. 4. 5. 6. 7.
2–32

Undo and remove the four M12 mounting bolts and washers that secure the base of the BBS cabinet to the top of the M-Cell6 battery box. Lift the BBS cabinet off the M-Cell6 battery box and move it to a location where it can be packed ready for transportation. Place the packed sundry items (cables, washers, link bars, etc.) in the battery compartment. Refit the fan tray, air inlet cover and battery cover. Refit the rectifiers, if the cabinet is to be transported with the rectifiers installed. Tape the keys to the cabinet on the inside of the door and then close the door. Refit the previously saved plugs into the threaded holes on the top of the M-Cell6 battery box. Pack the BBS cabinet ready for transportation.
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Chapter 3

Maintenance procedures for the battery backup system

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Chapter 3 Maintenance procedures for the battery backup system . . . . . . . . . . . . . . .
Introduction to maintenance procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Reporting faulty devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Routine maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Routine maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Opening the BBS cabinet door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-monthly maintenance procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Type of procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Cleaning air inlets and outlet grilles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-monthly maintenance procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Summary of 12-monthly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Checking and cleaning fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Checking normal operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-monthly maintenance procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Summary of 24-monthly procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Mechanical inspection of the cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FRU replacement procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to FRU replacement procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Isolating the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FRU list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Torque values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FRU view of the BBS cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the control and alarm board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to control and alarm board replacement . . . . . . . . . . . . . . . . . . . . . . . Replacement procedure for the control and alarm board . . . . . . . . . . . . . . . . . . . . Replacing a rectifier module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to rectifier replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacement procedure for a rectifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the fan tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to fan tray replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacement procedure for the fan tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the internal batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to internal battery replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internal battery replacement procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the BBS cabinet door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to door replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Views of the cabinet door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Door replacement procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

i
3–1 3–1 3–1 3–1 3–2 3–2 3–2 3–2 3–3 3–3 3–3 3–4 3–4 3–4 3–5 3–6 3–6 3–6 3–7 3–7 3–7 3–7 3–7 3–8 3–9 3–9 3–9 3–10 3–10 3–11 3–12 3–12 3–12 3–13 3–13 3–14 3–18 3–18 3–18 3–19

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Introduction to maintenance procedures

Introduction to maintenance procedures
Safety
Safety features are built into the equipment to protect against the potentially lethal hazards that exist. All statements regarding safety within these routine maintenance procedures must be adhered to when working on the equipment. WARNING Potentially lethal voltages and high energy sources are present in the cabinet when the external ac supply isolator switch is set to the on position and/or batteries are connected. Remove rings, watches and jewellery before starting these procedures, and exercise extreme caution when working on the equipment.

WARNING This equipment must only be maintained by trained personnel.

Tools
The tools required are those listed in Installation and Configuration: Horizonmacro Indoor, GSM-205-423 Chapter 1, Horizon macro indoor tool kit.

Reporting faulty devices
During general maintenance and replacement procedures, it may be possible to identify signs of damage caused by overheating, short circuits or sudden component failure. This may indicate a problem that could repeat, cause additional damage, or be a symptom of a failure elsewhere. Analysis of the problem may identify common faults and make corrective action possible. It is recommended that: S S The OMC is informed if an equipment safety problem has been identified. The steps for Reporting safety issues are followed. These are described in the frontmatter section of this manual.

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Routine maintenance

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Routine maintenance
Routine maintenance intervals
Routine maintenance for the battery backup system is recommended at the intervals shown in Table 3-1: Table 3-1 Routine maintenance schedule 6 months Ensure that cabinet air inlets and outlet grilles are not blocked. 12 months Check normal operation, including fans. Also cable integrity and state of all connections. 24 months Inspect general mechanical condition of the cabinet.

These procedures are described in subsequent sections of this chapter, one to cover 6-monthly, one for 12-monthly, and one for 24-monthly. NOTE The control and alarm board performs an automatic battery test on a monthly cycle. However, a manual battery test can be performed at any time (refer to Control and alarm board front panel controls and indicators, Battery test, in Chapter 1 for further information).

Assumptions
Any requirement to open the BBS cabinet door is assumed to be done in procedures. Closing the door is assumed to be done at the end of any procedure.

Opening the BBS cabinet door
The door lock is a trigger latch. The door is operated as follows: 1. 2. 3. Insert the correct key into the lock and turn. Press the middle square panel by the lock to release the lock. Open the door to the 95_ locking position. CAUTION Avoid damaging the honeycomb door vent. NOTE If the equipment is active, a Door 2 open alarm will be generated to the OMC. 4. 5.
3–2

To open the door to 130_, lift up the middle of the slide arm. To close the door, lift up the middle of the slide arm, close the door firmly and lock.
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6-monthly maintenance procedures

6-monthly maintenance procedures
Type of procedures
The 6-monthly maintenance procedures consist of the following: S Cleaning air inlets and outlet grilles. WARNING Potentially lethal voltages and high energy sources are present in the cabinet when the external ac supply isolator switch is set to the on position and/or batteries are connected. Remove rings, watches and jewellery before starting these procedures, and exercise extreme caution when working on the equipment.

Cleaning air inlets and outlet grilles
CAUTION If the cabinet is operational, this maintenance procedure should be completed without delay, in order to minimize the duration of air cooling disruption. Air is drawn into the cabinet through the grille at the bottom, in front of the battery compartment, and through the grille in the door. Air is expelled through the interface panel grille at the top of the cabinet. If a stacking bracket is fitted, air is then expelled through the grille at the front of the stacking bracket, and through the opening at the rear of the stacking bracket. CAUTION Care must be taken to ensure that no external objects are positioned so that they could obstruct airflow in or out of the cabinet.

The air inlet and outlet grilles are cleaned by using a vacuum cleaner or brush to ensure they are clear of debris. NOTE If a stacking bracket is fitted on top of the BBS cabinet, remove the front panel to access the air outlet grille on the BBS.

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12-monthly maintenance procedures

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12-monthly maintenance procedures
Summary of 12-monthly procedures
The 12-monthly maintenance procedures consist of the following: S S S 6-monthly procedures. Checking and cleaning fans. Checking normal operation. WARNING Potentially lethal voltages and high energy sources are present in the cabinet when the external ac supply isolator switch is set to the on position and/or batteries are connected. Remove rings, watches and jewellery before starting these procedures, and exercise extreme caution when working on the equipment.

Checking and cleaning fans
There are eight fan units housed in a fan tray, located immediately above the battery string compartment. Use the following procedure to check and clean the fans: CAUTION If the cabinet is operational, this maintenance procedure should be completed as quickly as possible to minimize the duration of air cooling disruption. (The fan tray can be removed for up to approximately 10 minutes without causing overheating problems.) 1. 2. 3. 4. Undo the two M6 captive retaining screws and withdraw the fan tray from the cabinet. Hold the tray vertical and use a brush to remove any dust and dirt from the fan modules. Refit the fan tray and secure in position by tightening the retaining screws. Check that the fans are operating correctly without any excessive noise. If there is excessive noise, replace the fan tray (see Replacing a fan tray later in this chapter).

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12-monthly maintenance procedures

Checking normal operation
Check normal operation of the BBS by visual inspection as follows: 1. Check the inside of the cabinet and note any signs of physical damage, overheating, loose connections, or badly fitting components. Take appropriate action to correct the damage, and inform the OMC. Note the LEDs lit on modules shown in Table 3-2 to ensure the correct functioning of the cabinet. Inform the OMC if any red LEDs are lit on the control and alarm board (with the exception of the Door Open alarm).

2.

Table 3-2 Normal LED indication of cabinet modules Equipment with LEDs Colour of LEDs lit GREEN (O/P healthy) YELLOW (I/P healthy) Notes

Rectifier modules Control and alarm board

– –

GREEN (BTS LVD closed) – GREEN (Comms LVD closed) – GREEN (Battery Charged) If this LED is flashing, it indicates that a battery test is in progress. RED (Door Open) – GREEN (Status OK) The Status OK LED is not affected by the Door Open alarm.

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24-monthly maintenance procedures

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24-monthly maintenance procedures
Summary of 24-monthly procedures
WARNING Potentially lethal voltages and high energy sources are present in the cabinet when the external ac supply isolator switch is set to the on position and/or batteries are connected. Remove rings, watches and jewellery before starting these procedures, and exercise extreme caution when working on the equipment. The 24-monthly maintenance procedures involve the following: S S S 6-monthly procedures. 12-monthly procedures. Mechanical inspection of the cabinet.

Mechanical inspection of the cabinet
The following procedures must be performed every 24 months.

Inspecting the cabinet exterior
Inspect the cabinet exterior by checking the cabinet interface panel connections for signs of overheating and security of attachment.

Inspecting the door
Inspect the door using the following procedure: 1. 2. 3. 4. Check the cabinet door for distortion, security and correct operation. Check hinges for damage, security and correct operation. Check the door earth connection for damage and security. Check the door lock mechanism and inspect for ease of operation. Lubricate the mechanism with light grease. Ensure that lubricated surfaces are grit-free.

Inspecting the cabinet interior
Inspect the cabinet interior using the following procedure: 1. 2. Check all rack mounted modules for security of attachment. Carry out a visual check of all wiring for signs of overheating and security of attachment. WARNING Do not overstress the earth connections as this may damage the connector and reduce the protective function.

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FRU replacement procedures

FRU replacement procedures
Introduction to FRU replacement procedures
WARNING Potentially lethal voltages and high energy sources are present in the enclosure when the external ac supply isolator switch is set to the on position and/or batteries are connected. Remove rings, watches and jewellery before starting these procedures, and exercise extreme caution when working on the equipment. This chapter provides information on the replacement of field replaceable units (FRUs) in the BBS. Only components classed as FRUs are described in this chapter. All FRUs may be hot swapped while the BBS is operational. There is no requirement to power down the BBS. NOTE Customers requiring replacement of items not classed as FRUs should contact their local Motorola office for availability of parts, and seek Motorola advice for replacement procedures. Any requirement to open the cabinet door is assumed in procedures. Closing and locking the door is assumed at the end of any procedure. Where customers wish to perform a minor repair on a FRU to save the cost of full replacement, they should consult Motorola for more detailed procedures or replacement components.

Isolating the BBS cabinet
All FRUs described in this chapter are “hot swappable” and do not require the BBS cabinet to be isolated.

FRU list
The following is a list of FRUs used in this equipment: S S S S S Control and alarm board. Rectifier modules. Fan tray. Battery strings. Cabinet door

Torque values
For torque values used during repair procedures, refer to Installation and Configuration: Horizonmacro Indoor (GSM-205-423) Site requirements and considerations.

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FRU replacement procedures

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FRU view of the BBS cabinet
Figure 3-1 shows the BBS cabinet with FRUs identified.

CONTROL AND ALARM BOARD

RECTIFIER MODULES

FAN TRAY

MONOBLOCS

Figure 3-1 BBS cabinet showing FRU components (excluding door)

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Replacing the control and alarm board

Replacing the control and alarm board
Introduction to control and alarm board replacement
This procedure describes how to remove and replace the control and alarm board in the BBS.

WARNING
Potentially lethal ac voltages and other high energy sources are present when the BBS cabinet is connected to an ac power source. In addition, –48 V dc is present when internal or external batteries are fitted. Replacing the control and alarm board does not require the removal of power. Notify the OMC of imminent repair activity.

Replacement procedure for the control and alarm board
To remove the control and alarm board
1. Unscrew the two M6 captive screws that secure the control and alarm board in position.

CAUTION
Handle the control and alarm board with care. 2. Withdraw the control and alarm board from its slot, supporting it from beneath with one hand as it emerges. Place it safely to one side.

The procedure for removing the control and alarm board is now complete.

To install a replacement control and alarm board
1. 2. 3. 4. Set SW3 on the replacement board to the same position as on the faulty board. Insert the control and alarm board into its slot. Ensure that the board is pushed fully home into its connector on the backplane and then tighten the two M6 screws to a torque of 3.4 Nm. Check the operation of the control and alarm board LEDs. The four green status LEDs (BTS LVD Closed, Comms LVD Closed, Battery Charged and Status OK) should be illuminated and all red alarm LEDs, with the exception of the Door open LED, should be unlit.

The procedure for installing a replacement control and alarm board is now complete. Inform the OMC that the replacement control and alarm board has been installed and log the maintenance activity.

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Replacing a rectifier module

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Replacing a rectifier module

Introduction to rectifier replacement
This procedure describes how to remove and replace a rectifier in the BBS. Figure 3-2 shows a view of the rectifier.

Figure 3-2 The rectifier

WARNING
Potentially lethal ac voltages and other high energy sources are present when the BBS cabinet is connected to an ac power source. In addition, –48 V dc is present when internal or external batteries are fitted. Replacing a rectifier does not require the removal of power. However, it is advisable to perform this procedure during periods of low traffic, as available power is reduced. Notify the OMC of imminent repair activity.

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Replacing a rectifier module

Replacement procedure for a rectifier
To remove a rectifier
1. Unscrew the two M6 captive screws that secure the rectifier in position.

CAUTION
The rectifier module weighs 4.6 kg. Handle with care. 2. Using the handle, withdraw the rectifier from its slot, supporting it from beneath with one hand as it emerges. Place it safely to one side.

The procedure for removing the rectifier is now complete.

To install a replacement rectifier
1. 2. 3. Repeat the removal procedure in reverse order. Ensure that the rectifier is pushed fully home into its connector on the backplane before tightening the two M6 screws to a torque of 3.4 Nm. Check the operation of the rectifier LEDs. The yellow I/P HEALTHY and green O/P HEALTHY LEDs should be illuminated.

The procedure for installing a replacement rectifier is now complete. Inform the OMC that the replacement rectifier has been installed and log the maintenance activity.

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Replacing the fan tray

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Replacing the fan tray
Introduction to fan tray replacement
The fan tray is mounted immediately above the battery string compartment and contains eight fan units. This procedure describes how to remove and replace the fan tray.

WARNING
Potentially lethal ac voltages and other high energy sources are present when the BBS cabinet is connected to an ac power source. In addition, –48 V dc will be present when internal or external batteries are fitted. Replacing the fan tray does not require the removal of power. Notify the OMC of imminent repair activity.

Replacement procedure for the fan tray
CAUTION If the cabinet is operational, this procedure should be completed as quickly as possible to minimize the duration of air cooling disruption. (The BBS will operate without overheating problems for up to approximately 10 minutes with the fan tray removed.)

To remove the fan tray
1. 2. Unscrew the two front panel captive M6 screws that secure the fan tray in position. Withdraw the fan tray from the cabinet, supporting it from beneath with one hand as it emerges. Place it safely to one side.

The procedure for removing the fan tray is now complete.

To install a replacement fan tray
1. 2. Insert the fan tray into its slot beneath the rectifiers. Ensure that the tray is pushed fully home into its connector on the backplane. Tighten the two M6 retaining screws to a torque of 3.4 Nm.

The procedure for installing a replacement fan tray is now complete. Inform the OMC that the replacement fan tray has been installed and log the maintenance activity.

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Replacing the internal batteries

Replacing the internal batteries
Introduction to internal battery replacement WARNING
Potentially lethal voltages and high energy sources are present in the enclosure when the external ac supply isolator switch is set to the on position and/or batteries are connected. Remove rings, watches and jewellery before starting these procedures, and exercise extreme caution when working on the equipment. The eight 12 V monoblocs that make up the two battery strings are mounted in the battery compartment beneath the fan tray, as shown in Figure 3-3. NOTE In some installations only four monoblocs (one battery string) may be fitted. WARNING There is a danger of explosion if monoblocs are incorrectly fitted. Replace only with the same type, or equivalent recommended by the manufacturer. Dispose of used monoblocs in accordance with manufacturers instructions and local safety regulations.

MONOBLOCS

Figure 3-3 BBS cabinet showing location of monoblocs (door and covers removed)

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Replacing the internal batteries

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Internal battery replacement procedure
Each battery string can be replaced while the equipment is in service, provided the internal battery strings are isolated from the rest of the system by switching the battery circuit breakers (STRING 1 and STRING 2) to OFF. If the battery strings are to be hot swapped, the rectifiers must not be removed.

Gaining access to the battery compartment
The following procedure describes how to gain access to the battery compartment so that the monoblocs can be replaced. Letters in parentheses refer to Figure 3-4. 1. 2. 3. 4. 5. Open the BBS door. Undo the two M6 retaining screws (A) from the front of the battery cover and remove the cover. Undo the two M6 retaining screws (B) from the air inlet cover. Remove the cover by lifting upwards and outwards. Undo the four M6 screws (C) holding the battery retaining bracket in place, and remove the bracket. Undo the two M6 retaining screws (D) on the fan tray front panel. Remove the tray. CAUTION The fan tray should be removed for as short a time as possible to minimize the duration of air cooling disruption. (The BBS will operate without overheating problems for up to approximately 10 minutes with the fan tray removed.)

(D) (A) (B)

(D) (A) (B) (C) (C) BATTERY RETAINING BRACKET (HIDDEN)

(C)

(C)

Figure 3-4 Accessing the monoblocs
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Replacing the internal batteries

Removing the old monoblocs
The following procedure details how to disconnect and remove the monoblocs. WARNING Insulated tools must be used when disconnecting monobloc terminals. Ensure the two double pole circuit breakers (STRING 1 and STRING 2) located on the BBS circuit breaker panel are switched to OFF. 1. 2. 3. Referring to Figure 3-5, disconnect links 2–2 to 2–3, 2–3 to 2–4 and 1–2 to 1–3, 1–3 to 1–4. Disconnect all the remaining cables to the monobloc terminals. Fit an insulating boot over each cable termination as soon as it is disconnected. Remove each of the monoblocs and place safely aside for disposal in accordance with the manufacturer’s instructions and local safety regulations.

STRING 1 BLUE (–) STRING 1 BLACK (+) STRING 2 BLACK (+) STRING 2 BLUE (–)

BLACK

BLACK

BUS BAR LINK

Figure 3-5 Terminal connections for monoblocs making up two battery strings

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Replacing the internal batteries

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Fitting replacement monoblocs
The following procedure describes how to install and connect up the new monoblocs. WARNING Read Battery installation safety precautions in Chapter 2 before attempting to install the new monoblocs. There is a risk of explosion if the monoblocs are installed incorrectly. Remove the new monoblocs, terminal bolts and spring washers from their packaging. Smear a small amount of light grease onto the bolt threads prior to fitting. Refer to Figure 3-6 and proceed as follows to install either one or two replacement battery strings in the BBS cabinet:

Installing a single battery string
1. Slide monobloc 1–1 into position. Fit the bolt and spring washer to the red sleeved (+) termination of the black cable marked “STR1 BATT1 +VE” and connect it to the red (+) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Fit the bolt and spring washer to the blue sleeved (–) termination of the blue cable marked “STR1 BATT1 –VE” and connect it to the blue (–) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. 2. Slide monobloc 1–2 into position and connect the blue sleeved (–) termination of the black cable marked “STR1 BATT2 –VE” to the blue (–) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Slide monobloc 1–3 into position. Slide monobloc 1–4 into position and connect the red sleeved (+) termination of the black cable marked “STR1 BATT4 +VE” to the red (+) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Check that all cables in string 1 are connected correctly and do not cross over each other (see Figure 3-6) and then fit the bus bar links between monoblocs 1–2 and 1–3, 1–3 and 1–4. Tighten the bolts to 5 Nm and fit the nut caps.

3. 4.

5.

Installing two battery strings
1. Slide monobloc 2–1 into position. Fit the bolt and spring washer to the blue sleeved (–) termination of the blue cable marked “STR2 BATT1 –VE” and connect it to the blue (–) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Fit the bolt and spring washer to the red sleeved (+) termination of the black cable marked “STR2 BATT1 +VE” and connect it to the red (+) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. 2. Slide monobloc 2–2 into position and connect the red sleeved (+) termination of the black cable marked “STR2 BATT2 +VE” to the red (+) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Slide monobloc 2–3 into position. Slide monobloc 2–4 into position and connect the blue sleeved (–) termination of the black cable marked “STR2 BATT4 –VE” to the blue (–) terminal on the monobloc. Tighten the bolt to 5 Nm and fit the nut cap. Install the first battery string, as described previously in Installing a single battery string. Note that it may be easier to make the connections to monobloc 1–1 before it is slid into position. Check that all cables in string 2 are connected correctly and do not cross over each other (see Figure 3-6) and fit the bus bar links between monoblocs 2–2 and 2–3, 2–3 and 2–4. Tighten the bolts to 5 Nm and fit the nut caps.
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3. 4.

5.

6.

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Replacing the internal batteries

2–1

1–1

2–2

2–3

2–4

1–4

1–3

1–2

Figure 3-6 Battery cable path, viewed from above

Refitting the retaining bracket, covers and fan tray
On completion of the new monobloc installation, the battery retaining bracket, air inlet cover, battery cover and the fan tray must all be refitted in the following order: Fan tray. Battery retaining bracket. Air inlet cover. Battery cover. This procedure is a reversal of the procedure Gaining access to the battery compartment, given previously.

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Replacing the BBS cabinet door

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Replacing the BBS cabinet door
Introduction to door replacement
The door is essential for the correct operation of the cabinet ventilation system, and also provides protection for the equipment inside. It is therefore essential that the door replacement procedure is carried out in one session, and the cabinet then secured.

Views of the cabinet door
Figure 3-7 shows views of the inside and outside of the BBS cabinet door. EXTERNAL VIEW

VENTILATION GRILLE

TRIGGER LATCH

INTERNAL VIEW
DOOR ALARM BRACKET DOOR STOP BRACKET

HONEYCOMB VENTILATION

VERTICAL AIR BAFFLE

Figure 3-7 The BBS cabinet door
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Replacing the BBS cabinet door

Door replacement procedure
Removing the faulty door
Open the door and proceed as follows to remove: 1. 2. 3. 4. On the inside of the cabinet, undo the M6 nut that secures the door earth cable to the cabinet. Retain the nut for re-use. Slacken the M6 securing screw on the sliding arm, then unhook the sliding arm from the cabinet attachment point by lifting. Open the door to about 90° and then lift the door off its hinges. Store the door and its keys ready for transport/disposal.

Fitting a replacement door
Proceed as follows to fit a replacement door: CAUTION Take care to avoid damaging the honeycomb vent when fitting the door. 1. 2. 3. 4. Hold the door at about 90° to the cabinet and then lift the door onto its hinges. Attach the door earth cable to the cabinet using the M6 nut. Tighten to a torque of 3.4 Nm. Fit the sliding arm onto its attachment point on the cabinet and turn the M6 nut several turns (do not fully tighten). Check the operation of the new door and ensure that the keys supplied are the correct ones for the lock before closing the door. NOTE Unlike the original BBS cabinet door, a replacement door does not have a battery installation instruction label on the inside panel. In such cases where the door has been replaced, the internal battery replacement procedure given in this chapter must be followed.

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Replacing the BBS cabinet door

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Chapter 4

Parts list for the battery backup system

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Chapter 4 Parts list for the battery backup system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts list information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction to BBS parts list information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ordering method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Spare parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

i
4–1 4–1 4–1 4–1

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Parts list information

Parts list information
Introduction to BBS parts list information
Apart from cables, the stacking bracket and rectifier blanking panels, only those parts classed as FRUs by Motorola are listed in this chapter. Each item consists of a description and an order number. This uniquely identifies the required component. Some components may be used in other equipment, in addition to being used in the BBS for the Horizonmacro indoor.

Ordering method
Contact the local Motorola office for ordering information, including cost and delivery. NOTE Motorola reserves the right to change the design of the product without notice. The information provided in this chapter is intended only as a guide. Consult the local Motorola office for the latest available information.

Spare parts list
Table 4-1 lists the spare parts available for the BBS at the time of printing this manual supplement. Contact the Motorola local office for an up-to-date list.

Table 4-1 List of spares for the BBS Description DC power cable (BBS to Horizonmacro indoor), 2.7 m DC power cable (BBS to Horizonmacro indoor), 4.2 m Comms power cable BBS to Horizonmacro indoor stacking bracket BBS fan tray Control and alarm board Rectifier blanking panels (x 4) BBS battery string Door Rectifier Order Number SVKN1306 SVKN1307 SVKN1326 SVLN1212 SVLN1327 SVLN1328 SVLN1439 SVPN1211 SWHN5556 SWPN5996

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4–1

Parts list information

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Index

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A
AC supply connections single phase, 2–14 three phase, 2–15 Alarm cable connections, 2–12

B
Batteries backup time, 1–1, 1–20 charge current limiting, 1–15 connecting external, 2–22 installation, 2–19 internal arrangement, 1–6 replacement procedure, 3–14 specifications, 1–20 temperature compensation, 1–16 voltage and current measurement, 1–15 Battery string dipswitch, 2–17 Battery test, 1–14 BBS cabinet decommissioning, 2–30 dimensions, 1–21 door replacement procedure, 3–19 earthing, 2–13 FRUs, 3–8 installation procedures, 2–8 internal layout, 1–2 powering down, 2–29 powering up, 2–28 site plan, 2–3 unpacking, 2–5 weight, 1–22

C
Circuit breaker panel, 1–16 Circuit diagram, BBS, 1–5 Comms power connections, 2–11 Control and alarm board alarm LEDs, 1–13 float voltage adjustment, 1–14 front panel diagram, 1–11 replacement procedure, 3–9 status LEDs, 1–12

D
DC cable connections, 2–11

E
Electromagnetic compatibility, 1–19

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Emergency stop, 1–17, 2–13

F
Fan tray alarms, 1–7 cleaning, 3–4 replacement procedure, 3–12 Fuses, 1–21

H
Horizonmacro indoor cabinet mounting on stacking bracket, 2–27 removal, 2–30

I
Interface panel alarm and signal connections, 1–17, 1–18 diagram, 1–3, 2–10 disconnecting cables, 2–31

L
LVD contactors, 1–4, 1–16

M
M–Cell6 indoor battery box, 2–6, 2–9, 2–32

P
Packaging, 2–4

R
Rectifier front panel LEDs, 1–9 functional description, 1–9 functional diagram, 1–10 installation, 2–23 replacement procedure, 3–11 requirements, 1–8 Reset button, control and alarm board, 1–13 Routine maintenance schedule, 3–2

S
Spares list, 4–1
iv
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Stacking bracket dimensions, 1–21 installation, 2–26 removal, 2–30 Supply voltage, 1–19

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v

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