// CONTROL TECHNOLOGY

Position switches with safety function

Range of application

The position switches with a safety function are suitable for sliding and hinged guard devices, which must be closed in order to guarantee the necessary operational safety. In combination with an appropriate safety control module, all safety switches shown in this chapter achieve Control Category 3 or 4 to EN 954-1.

Further applications for positions switches with safety function are most varied positioning duties. The variety of requirements to befound in practice can be met in detail by means of a wide range of actuating elements

Design and operating principle

On the position switches with a safety function, the guard deviceand the positive break NC contact are positively linked. With the safety guard in closed condition, the position switch with safety functionis not operated.

Many versions with snap or slow action are available. The position switches with a safety function can be fitted in any desired mounting position.

All position switches with safety function shown in this chapter bear the CE mark according to the Machinery Directive 98/37/EC.

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on hinged guards

Legend

α: Actuating angle from below
as shown in picture

on sliding guards

Legend

α: Actuating angle from right of switch axis

β: Actuating angle from left of switch axis with reference to lever position as shown in picture