Siemens SINAMICS G120 Function Manual page 83

Electromechanical sensor
The inverter provides the supply voltage
Connect the 24 V supply of the inverter to the sensors and connect the reference potentials
of the inputs used to GND.
Figure 3-4
External power supply
Connect the external power supply to the sensors and connect the reference potentials of
the inputs used to the reference potential of the external power supply.
Figure 3-5
Safety Integrated Function Manual, SINAMICS G120 and G120C
Function Manual, 01/2011, FW 4.4, A5E03052391B AB
Connecting an electromechanical sensor to the inverter power supply
Connecting an electromechanical sensor to an external power supply
Interfaces
3.2 Activation via F-DI
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