Motor Temperature Monitoring Using A Temperature Sensor - Siemens Sinamics CU240D-2 DP Operating Instructions Manual

Advanced commissioning

6.19 Motor temperature monitoring using a temperature sensor

6.19 Motor temperature monitoring using a temperature sensor
You can use one of the following sensors to protect the motor against overtemperature:
● Temperature switch (e. g. bi-metal switch)
● PTC sensor
● KTY 84 sensor
● Pt1000 sensor
Connect the motor's temperature sensor through the motor output cable on the Power
Module.
Electrical shock from temperature sensor connectors
The temperature sensor are at dangerous potential. Touching live parts on the motor cable
and in the motor terminal box can result in death or severe injury.
• Power down the converter and disconnect all power cables from the converter before
• Insulate cables in the motor terminal box that are not used.
NOTICE
Device damage by earthing the motor cable
The temperature sensor are at negative potential. Earthing these connections will damage
the device.
• Insulate cables in the motor terminal box that are not used.
• Do not earth cables that are not used.
Temperature switch
224
WARNING
connecting or disconnecting the motor temperature sensor or the motor holding brake.
The inverter interprets a resistance ≥ 100 Ω as being an opened temperature switch
and responds according to the setting for p0610.
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF