Siemens Sinamics G120 Function Manual page 81

SINAMICS G120D requires a PP-switching fail-safe output.
1)
Figure 4-28
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD
You may operate the inverter and the ET 200S with different 24‑V supplies - as well as with the
same 24‑V supply.
Connecting PP-switching ET 200S modules using a SINAMICS G120D as example
4.4 Controlling via a fail-safe digital input
Installing
81