15_9 International Standards

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International Standards

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Technical Information
9. International standards
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9.1 Pneumatic symbols, Cylinders
Description Double acting pneumatic cylinder Explanation Symbol

Description Shock absorber

Explanation

Symbol

With through piston rod.

Hydraulic cylinder

With adjustable cushioning.

Pressure transmitter Device which converts a pneumatic pressure value into a higher hydraulic pressure value. Ejector

With magnetic piston rod for proximity switch indication.

With piston rod protected against torsion.

Suction cup

Single acting pneumatic cylinder

Return stroke by means of external forces and/or built-in spring. With magnetic piston.

Double rod cylinder

With hollow piston rods for vacuum applications.

With magnetic pistons. The house move and acts as a carrier.

Rodless cylinder

With adjustable cushioning.

Rodless cylinder Kostalo

With adjustable cushioning.

Rotary actuator

Bellows cylinder

15

15.87

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9.2 Pneumatic symbols, Valves

Description Manual actuation General

Explanation

Symbol

Description Air spring

Explanation

Symbol

Electrical actuation Push button Solenoid Direct operated valve.

Lever

Two directions of operations.

Solenoid with pilot valve

Pedal

One direction of operation.

Solenoid with pilot valve and manual override

Manual override is unistable. Pilot valve with central air feed.

Three position action.

Solenoid with pilot valve and manual override Control valves

Manual override is bistable. Pilot valve with separate air feed.

Mechanical actuation Plunger Two directions of operation.

2 port 2 position control valve

Normally closed. The numbered ports shows the nonactuated basic position. Flow in both directions. The numbered ports shows the nonact-uated basic position. Normally closed.

Operation in any direction.

Roller

Two directions of operation.

Normally open.

Roller

One direction of operation.

3 port 2 position control valve

Normally closed.

Spring

Normally open.

Pneumatic actuation Pressure actuated

4 port 2 position control valve

5 port 2 position control valve Pressure actuated By different opposing influence areas. As above but with adjustable integrated exhausted chokes.

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15.88

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9.3 Pneumatic symbols, Functionals and throttle valves
Description 5 port 3 position control valve Explanation Normally closed. Symbol Description Check valve Explanation Symbol

Normally open.

With spring.

Pressure centre

Pilot controlled.

Complete symbol (example)

5/2 unistable valve with unistable manual override. Solenoid with pilot valve.

Valve with OR-funciton

Valve with two inlet ports and one outlet port that automatically shuts off the exhausted inlet port. Valve with two inlet ports and one outlet port. The outlet port is pressurized as long as pressure is applied to both inlet ports. Non return function in the inlet port. When the inlet port is unloaded the outlet port exhausts into free air.

Valve with AND-function

Quick exhaust valve

Throttle

Constant throttling in both directions of flow.

Adjustable throttle

Adjustable check-choke valve

15.89

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9. International standards
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9.4 Pneumatic symbols, FRL
Description Pressure regulator Working line Explanation Symbol Description Transmission of energy Symbol

Pressure regulator

With relief.

Pilot line

Pipeline connection Filter with water separator Manually drained. Crossed pipelines

Automatically drained.

Flexible pipe

Compressed air supply Lubricator

Connector plugged Air dryer Electric line Conditioning unit Conditioning of filter, separator, pressure regulator, pressure gauge and lubricator. Exhaust port without pipe connection.

Simplified.

Exhaust port threaded for connetion.

Silencer.

Reservoir for compressed air.

Stop cock (simplified).

Other devices Pressure switch pneumatically actuated.

Pressure gauge.

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15.90

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9.5 A short descritption of common standards
Table 9.5.1 ISO 5599/1 ISO 5599/2 VDMA 01 VDMA 02 CNOMO ISO 6431 Table 9.6.2 Degree of protection against water Second digit The standard is applicable to the interface surface for pneumatic valves with width 38, 50, 64, and 74 mm. As above but the electrical connection are standardized as well. The standard is applicable to the interface surface for a pneumatic valve with width 26 mm. As above but the width of the valve is 18 mm. The standard is applicable to the interface surface for pilot valves (width 30 mm.) The standard is applicable for tie rod cylinders including mountings. 4 3 0 1 Designation No protection Protection against water dripping vertically Protection against water dripping from an angle Protection against water spray Protection against splashing water Protection against water jets Protection against flooding Immersion proof Degree of protection No special protection. Water dripping vertically should have no harmful effect.

2

Water dripping at angle less than 15° with respect to the vertical should have no harmful effect. Water spraying at any angle less than 60° with respect to the vertical should have no harmful effect. Water splashing from any direction should have no harmful effect.

VDMA 34553 The standard is applicable for tie rod cylinder. IEC 144 DIN 40050 Protection and insulation grades for electrical equipment.

5

Water jets from any direction should have no harmful effect Temporary flooding, e.g. by heavy seas, should not cause water to enter in sufficient quantities to have harmful effect. Water should not enter in sufficient quanitities to have a harmful effect during the immersion of the device under specified conditions of pressure and time. Water should not enter in sufficient quanitities to have a harmful effect during the submersion of the device under a specified pressure and for an unspecified period of time.

9.6 Protection and insulation grades for elecrical equipment
The letters IP indicate the protection against contact and ingress of solid objects and water. The first digit from 0 to 6 indicates the degree of protection against contact and ingress of solid objects. The second digit indicates the degree of protection against ingress of water. Table 9.6.1 Degrees of portection against contact ingress of solid objects First digit 0 Designation Degree of protection

6

7

8

Submersion proof

No protection No special protection for persons against accidental contact with current-carrying or moving parts. No protection for the device against ingress of solid objects. Protection against large solid objects Protection against contact with a large area of current-carrying and internal moving parts, e.g. by hand, but no protection against intentional access to these parts. Protection against ingress of solid objects with a diameter of above 50 mm. Protection against contact of fingers with current-carrying or internal moving parts. Protection against ingress of solid objects with a diameter of above 50 mm. Protection against contact of tools, wires or similar, thicker than 2,5 mm, with current-carrying or internal moving parts. Protection against ingress of solid objects with a diameter of above 2,5 mm. Protection against contact of tools, wires or similar, thicker than 1 mm, with current-carrying or internal moving parts. Protection against ingress of solid objects with a diameter of above 1 mm. Complete protection against contact with current-carrying or internal moving parts. Protection against harmful dust deposits. The ingress of dust is not completely prevented, but the dust does not enter in sufficient quantities to harm equipment. Complete protection against contact with current-carrying or internal moving parts. Protection against ingress of dust.

1

2

Protection against small mediumsized solid objects Protection against small solid objects

3

4

Protection against granular solid objects Protection against dust deposits

5

6

Protection against ingress of dust

15.91

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