Siemens SINAMICS S150 NEMA, Operating Instructions Manual

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Electrical installation
4.8 Signal connections
Enclosed Drives
112
Operating Instructions, 12/2018, A5E36652151A
WARNING
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 fully comply with the specifications of the safety isolation.
NOTICE
Damage or malfunction due to impermissible voltage values
If the back EMF is impermissible, the components may be damaged or malfunction.
•
The back EMF at the outputs may only be in the range between -15 V and +15 V.
NOTICE
Damage to motor when KTY temperature sensor is connected incorrectly
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- 25 Terminal block X540
Connector Terminal Designation Technical specifications
8 +24 V Voltage: +24 V DC
Max. total load current of +24 V auxiliary voltage for
terminals X540 and X541 combined: 150 mA
Sustained short-circuit-proof
7 +24 V
6 +24 V
5 +24 V
4 +24 V
3 +24 V
2 +24 V
1 +24 V
Max. connectable cross-section:
- Standard version: #16 AWG (1.5 mm²)
- Version with option G65: #14 AWG (2.5 mm²)
Note
Use of the voltage supply
This voltage supply is used only for supplying the digital inputs.