Installing
3.2 Connecting
SINAMICS G120C, FSD ... FSF inverters
30 Compact Operating Instructions, 11/2016, FW V4.7 SP6, A5E39339884B AA
→ If you also wish to use the power supply at terminals 31, 32 for the digital inputs, then you
must connect "DI COM1/2" and "GND IN" with one another.
For the analog input, you can use the internal 10 V supply or an external voltage source.
→ if you use the internal 10 V power supply, you must connect AI 0- or AI 1- to GND.
If you want to connect the potential
of the external power source to the
potential of the inverter’s internal
power supply, you must connect
"GND" to terminals 34 and 69.