F-Plc - Siemens PM330 Hardware Installation Manual

Appendix
A.3 Application examples for functional safety (STO / SS1-t)
A.3.3.2

F-PLC

Figure A-5
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)".
The F-PLC must be externally supplied (max. 250 mA is generally not sufficient for an F-
PLC).
Note
When using digital outputs, parasitic voltages can occur and external noise and disturbances
can be coupled-in.
128
SS1-t with an F-PLC
Hardware Installation Manual, 12/2018, A5E32844552B AF
Power Module PM330