Underload

What does Uc mean?

This fault indicates an underload condition where the measured motor current has dropped below the level set by parameter F611 ([Underload level]), potentially due to loss of load or mechanical failure.

• The measured motor current has dropped below the level set by parameter F611.
• Loss of mechanical load on the motor.

Click steps to track your progress.

1. 1

   Check parameters F610 ([Underload det.]), F611 ([Underload level]), and F612 ([Underload det. time]) for correct settings.

2. 2

   Verify the mechanical coupling between the motor and the load.