28 September 2021
TJF fault on the ATV61/ATV71 drives
Altivar ATV61 and ATV71
TJF means IGBT overheating caused by drive overheating
This fault appears when the estimated temperature of an IGBT is too high. It is a calculated measurement based on the switching frequency, drive output frequency, and motor current.
Check the size of the load, motor, and drive.
Reduce the switching frequency in menu 1.4
Wait for the motor to cool before trying to restart the drive.