ovA on DELTA inverters: Over-voltage during acceleration

DELTA inverters: MS300

Disconnect the supply and wait for the capacitors to discharge before opening the inverter or touching its terminals.

Common causes

1. 1High supply voltage
2. 2The motor is spun by the load before start

Try first

1. 1Measure the supply (380 to 480 V on 43 models)
2. 2Enable speed search if the motor is turning at start