Motor overload temperature
Danfoss · VLT AutomationDrive FC 301/302
What does 10 mean?
The electronic thermal protection (ETR) indicates the motor is too hot. The drive issues a warning or alarm when the internal counter exceeds 90% (depending on parameter 1-90) and trips when it reaches 100%, typically due to prolonged operation above 100% overload.
Additional Steps
Steps 1–2 are listed in Priority Fix.
- 3
Verify that the motor current set in parameter 1-24 and all other motor data in parameters 1-20 to 1-25 are correctly configured.
- 4
If an external motor cooling fan is in use, confirm it is properly selected in parameter 1-91 Motor External Fan and is functioning.
- 5
Perform an Automatic Motor Adaptation (AMA) in parameter 1-29 to ensure the frequency converter is accurately tuned to the motor, which can reduce thermal loading.