Controlling the safety functions
5.2 Control of "STO" and "SS1" via terminal module for option K82
Safety Integrated
46 Function Manual, 07/2016, A5E03264275A
Note
The checkback signal is not necessary for compliance with the standard DIN EN ISO 138
-1) cat. 3 PL d and DIN EN 61508 SIL2.
The selection of the safety function must be performed in two channels. A switch according
to ISO 13850/ EN 418, positive opening according to EC 60947-5-1, or a certified safety
controller must be used as actuating element.
Danger to life as a result of failure of the safety functions through unsuitable selection of the
actuating element
An unsuitable actuating element may cause the safety function to fail which can result in
death or serious injury.
• Select the correct actuating element for the purpose of compliance of the overall system
with the required standard (DIN EN ISO 13849-1 (formerly EN954-1) Cat. 3 PL d or DIN
EN 61508 SIL2).
Forced checking procedure
The maximum value for the forced checking procedure interval when using option K82 is
6 months (4380 h).
Table 5- 4 Terminal strip –X41
Connection for actuating element at channel 1 "+"
-X41:3 Control of -K41:A2, -K42:A2 , N conductor or ground Connection of reference potential for actuating
elements at channel 1 and channel 2
-X41:5 Feedback signal, status -K41, -K42 Connection of supply voltage for optional feed-
Feedback signal, status -K41, -K42
Connection of optional checkback signal
Connection for actuating element at channel 2 "+"
-X41:10 Output -K41: Permanently wired with CU320-2: -X132:4
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