Siemens SINAMICS S120 Manual page 313

Temperature sensor connection
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.
Data regarding the parameterization of the KTY temperature sensor can be taken from the
following reference:
Reference: /FH1/ SINAMICS S120 Function Manual, Chapter "Monitoring and protective
functions/thermal motor protection"
Note
The maximum length of the temperature sensor cable is 100 m. The cables must be
shielded.
Danger to life due to 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 regarding safe electrical
• If safe electrical separation cannot be guaranteed (for linear motors or third-party
AC Drive
Manual, (GH6), 07/2016, 6SL3097-4AL00-0BP5
Supplementary system components and encoder system integration
WARNING
separation.
motors, for example), use a Sensor Module External (SME120 or SME125) or Terminal
Module TM120.
8.1 Sensor Modules
313