Over-voltage during acceleration (ovA)

DC bus over-voltage during acceleration. When ovA occurs, the drive closes the gate of the
output, the motor runs freely, and the display shows an ovA error.

Check if the over-voltage warning occurs after acceleration stops.
When the warning occurs, do the following:
1. Increase the acceleration time
2. Set Pr.06-01 over-voltage stall prevention
3. Increase setting value for Pr.01-25 S-curve acceleration arrival time 2

Incorrect wiring of brake resistor or brake unit - Check the wiring of brake resistor and brake unit.

Check drive rectifier & IGBT using multimeter.
Check wiring.
Check drive hardware using multimeter.