Auto-tuning fault

What does tnF mean?

An auto-tuning process has failed, likely due to using a special motor, a motor whose power is unsuitable for the drive, or the motor not being properly connected during the auto-tuning sequence. This prevents the drive from accurately characterizing the motor.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If an output contactor is present between the drive and the motor, ensure it is closed and engaged throughout the auto-tuning procedure.