Siemens SINAMICS G130 Operating Instructions Manual page 110

Electrical installation
4.10 Signal connections
NOTICE
Damage or malfunctions through impermissible voltage values
If the back EMF is impermissible then damage and malfunctions may occur on the
components.
• The back EMF at the outputs may only be in the range between -15 V and +15 V.
NOTICE
Damage to motor in the event of incorrectly connected KTY temperature sensor
If a KTY temperature sensor is connected with incorrect polarity, it is not possible to detect
when the motor overheats. Overheating can cause damage to the motor.
• Connect a KTY temperature sensor with the correct polarity.
X540: Joint auxiliary voltage for the digital inputs
Table 4- 41
Max. connectable cross-section: 1.5 mm²
Note
Use of the power supply
This voltage supply is only for powering the digital inputs.
110
Terminal block X540
Terminal Designation
8 +24 V
7 +24 V
6 +24 V
5 +24 V
4 +24 V
3 +24 V
2 +24 V
1 +24 V
Technical data
Voltage: +24 V DC
Max. total load current of +24 V auxiliary voltage for
terminals X540 and X541 combined: 150 mA
Continuously short-circuit proof
Operating Instructions, 07/2016, A5E00331449A
Inverter chassis units