Over-voltage during constant speed

DC bus over-voltage at constant speed.
When ovn occurs, the drive closes the gate of the
output immediately, the motor runs freely, and the
display shows an ovn error.

1. Connect the brake resistor, braking unit or DC bus to the drive.
2. Reduce the load.
3. Replace the drive with a larger capacity model.
4. Adjust the braking level (Pr.07-01 or bolt position of the brake unit

Check the wiring of the brake resistor or braking unit.