Siemens SINAMICS G115D Operating Instructions Manual page 71

Glanded variant
X01/X02 - 24 V power supply terminals
Motor-mounted converter
Switched/unswitched 24 V power supply
The unswitched (also known as "non-switched") 24 V power supply (1L+) is required for the
drive to function.
• Use a power supply with PELV (Protective Extra Low Voltage).
• For applications in USA and Canada:
– use a NEC Class 2 or a limited voltage/limited current power supply for variants with
– use a limited voltage power supply for all other variants.
• The 0 V of the power supply must be connected with low resistance to the PE of the
system
The switched 24 V (2L+) supplies the two bidirectional digital inputs/outputs DIO 24 and DIO
25. Switching off the 24 V power supply voltage brings all of the actuators connected to the
digital outputs into the no-voltage state.
If you don't need the switching of 2L+ power supply, then both the switched and the
unswitched 24 V may come from the same supply.
For a complete explanation of the unswitched and switched 24 V supplies and their
limitations, please read the FAQ at the following link:
Unswitched and switched 24 V supply
(https://support.industry.siemens.com/cs/ww/en/view/26986267)
Further information
SINAMICS G115D distributed drive
Operating Instructions, 09/2020, FW V4.7 SP13, A5E48681219B
7/8" connector or AS-i variants;
Cables and connectors (Page 57)
4.11 Connecting the 24 V power supply
Wall-mounted converter
Wiring
Signal Description
2L+ Switched 24 V
2M Switched 0 V
1L+ Unswitched 24 V
1M Unswitched 0 V
Cable gland size: M20 * 1.5
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