Connection Of A Single Safety Switch - SICK TR4 Instrucciones De Operación

Operating Instructions
TR4
Fig. 5: Connection of a
single safety switch
WARNING
8014465/2012-05-07
Subject to change without notice
Electrical installation
5.3.2

Connection of a single safety switch

Connect the safety switch as shown in Fig. 5.
Use external device monitoring!
The TR4 has no external device monitoring. To achieve SIL3/PL e you
must therefore implement external device monitoring with the aid of
suitable higher level safety evaluation.
The actual performance level or SIL claim limit achieved depends on
the external circuit, the design of the wiring, the selection of the control
switch and its placement on the machine.
Evaluate both safety outputs!
To ensure safety it is imperative you evaluate both safety outputs
(Out A and Out B) (see Fig. 5).
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Chapter 5
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