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What is TJF fault on ATV320 drive?

Published date: 27 January 2020

Getting TJF fault on the ATV320 drive.

Product Line:
Altivar 320


Drive fault.

TJF - IGBT overheat 

Cause - TJF means IGBT overheating caused by drive overheating

• Check the size of the load/motor/drive.
• Reduce the switching frequency (SFr).
• Wait for the motor to cool before restarting.

Check functionality within drive to make sure the speed is not oscillating.  Adjust torque settings.

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