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What can cause an tJF or IGBT overheating fault on the ATV630 and ATV930 drives?

Issue:
What can cause an tJF or IGBT overheating fault on the ATV630 and ATV930 drives?

Product Line:
ATV630 and ATV930

Environment:
All 

Cause:
IGBT is overheating or fans are not running.

Resolution:
IGBT Overheating Error
Principle
The thermal model of the IGBT thermal monitoring has detected an overheat. This function is protecting the IGBT's.
Probable causes
-
Ambient temperature too high.
- Bad cooling fan.
- Filter blocked.
- Check the ventilation.
- Function of fans faulty.

Remedies
- Check the motor load, the ventilation of the Drive and the ambient.
- Reduce the switching frequency

 
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