Terminal Strips; Terminal Strips With Wiring Example - Siemens SINAMICS G120X Operating Instructions Manual

4.2.3

Terminal strips

Terminal strips with wiring example

The digital outputs are designed for low voltage systems of overvoltage category II. In installations of overvoltage category
1)
III, galvanic isolation is required between the supply network and the digital output.
Restriction for FSB and FSC in installations compliant with UL: max. 0.5 A
Figure 4-13 Wiring the digital inputs with p-switching contacts and an internal 24 V power supply (terminal 9)
All terminals with the "GND" reference potential are internally connected with one another.
The reference potential "DI COM" is not internally connected with "GND".
→ If, as shown above, you wish to use the 24 V supply from terminal 9 as supply for the digital
inputs, a jumper is required between terminals 28 and 69.
When an optional 24 V power supply is connected at terminals 31, 32, even when the Power
Module is disconnected from the line supply, the Control Unit remains in operation. The Control
Unit thus maintains fieldbus communication, for example.
→ for terminals 31, 32, only use a 24 VDC power supply according to SELV (Safety Extra Low
Voltage) or PELV (Protective Extra Low Voltage).
→ if you also wish to use the power supply at terminals 31, 32 for the digital inputs, then you must
connect "DI COM" and "GND IN" with one another at the terminals.
You may use the internal 10 V power supply or an external power supply for the analog inputs.
→ When you use the internal 10 V power supply, you must connect AI 0 or AI 1 with "GND".
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
Wiring
4.2 Control interfaces
101