Terminal Strips Behind The Lower Front Door - Siemens sinamics G120 Operating Instructions Manual

Installing
4.6 Installing Control Unit
4.6.4

Terminal strips behind the lower front door

All terminals with reference potential "GND" are connected with one another in the inverter.
Reference potentials for DI 1, DI 3 und DI 5, electrically isolated from "GND"
Reference potential for DI 0, DI 2, DI 4 and DI 6, electrically isolated from "GND"
Reference potential for DI 16 ... DI 19, electrically isolated from "GND"
Image 4-10 Interconnection example of the digital inputs with external 24 V power supplies
Interconnecting the reference potential of the digital inputs
Table 4- 9
Supply
You are using an external 24
V supply
You are using the internal 24
V supply at terminal 9
88
Supply options for the digital inputs
Reference potential interconnection
As shown above, connect the reference potential of the external 24-V
supply to the reference potential of the corresponding digital input.
Connect the appropriate reference potential of the digital input to
GND.
Operating Instructions, 01/2016, FW V4.7 SP6, A5E31759476B AE
Converter with CU250S-2 Control Unit