Cause : Acceleration Error comes when the acceleration error (E.OA) occurs and the inverter output is shut off when the acceleration rate of the motor rotation speed has exceeded the faulty acceleration rate detection level (Pr.375). This protective function is not available in the initial status.

1. Check for sudden load change.
2. Check that the Pr.375 Faulty acceleration rate detection level setting is correct.
3. Check if the acceleration/deceleration rate setting is high.
4. Reduce the load.
5. Set Pr.375 Faulty acceleration rate detection level correctly.