Appendix
A.3 Application examples for functional safety (STO / SS1-t)
Power Module PM330
126
Hardware Installation Manual, 12/2018, A5E32844552B AF
A.3.3
Stop Category 1 (SS1-t)
A.3.3.1
SIRIUS 3SK1121 with relay outputs
Figure A-4 SS1-t with 3SK1121-xCB4y (3SK11 with relay outputs)
Start button
Manual reset function (start, acknowledgment), according to ISO 13849-1 depending on the
application required, e.g. Emergency Stop, protective devices with rear access etc.
General requirements
See "General requirements (Page 121)".
Align the OFF3 ramp time with the SS1-t monitoring time of the 3SK1 (the monitoring time
should be longer than the ramp time).
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