Thermal motor protection

Thermal motor protection avoids overheating and, therefore, prevents irreparable damage to the motor. For this purpose, temperature sensors detect the winding temperature. As standard, the inverters can evaluate the following temperature sensors.

Motor protection

Number of sensors

SEW-EURODRIVE designation

PTC thermistor

3

TF

Bimetallic temperature switch

3

TH

Motor series

Temperature sensor

Motor protection

DR..

TF, TH

Comprehensive protectionComprehensive protection due to one sensor per motor phase.

Third-party motors

PTC thermistor,
bimetallic temperature switch

Comprehensive protectionComprehensive protection due to one sensor per motor phase.

For additional information on the thermal motor protection, refer to the documentation of the motors.