Siemens SINAMICS DCM Operating Instructions Manual page 213

Electric shock in the event of voltage flashovers at the temperature sensor
Voltage flashovers in the signal electronics can occur in motors without safe electrical
separation of the temperature sensors.
• Use temperature sensors that comply with the specifications relating to protective
7.5.3.8 X540 auxiliary voltage for the digital inputs
Table 7- 39
Connector
Note
This power supply is only used for powering the digital inputs.
Note
If the 24 V supply is briefly interrupted, the auxiliary voltage for the digital inputs is
deactivated for this time.
SINAMICS DCM Control Module
Operating Instructions, 12/2018, A5E34888669A
WARNING
separation.
Screw terminal X540
Terminal
8
7
6
5
4
3
2
1
Designation
+24 V
+24 V
+24 V
+24 V
+24 V
+24 V
+24 V
+24 V
Additional system components
7.5 Terminal Module TM31
Technical specifications
Voltage: +24 V DC
Max. total load current of +24 V auxiliary
voltage for terminals X540 and X541
combined: 150 mA
211