Siemens SINAMICS G120X - SIRIUS 3 SK2 Safety Relay; Connection 3 SK1 Inside a Control Cabinet for FSH, FSJ; Connection 3 SK2 Inside a Control Cabinet for FSA … FSG

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Figure 4-28 Connection 3SK1 inside a control cabinet for FSH, FSJ
You can achieve SIL 3/PL e with a SIRIUS 3SK1 safety relay and the converter FSH or FSJ.
SIRIUS 3SK2 safety relay
The wiring examples are implemented using safety relays with relay enable circuits. Safety
relays with semiconductor enable circuits can also be used.
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Figure 4-29 Connection 3SK2 inside a control cabinet for FSA … FSG
Wiring
4.2 Control interfaces
SINAMICS G120X converter
134 Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC