Cause : Over-current during acceleration comes when the motor's current has exceeded a specific limit during the acceleration phase when the drive is trying to increase the motor speed.

The ocA error code on your Delta MS300 drive signifies an Over-current during Acceleration condition. This means the output current from the drive to the motor has exceeded a specific limit during the acceleration phase.

1. Increase the acceleration time
2. Increase the acceleration time of S-curve 
3. Set auto-acceleration and auto-deceleration parameter (Pr.01-44)
4. Set over-current stall prevention function (Pr.06-03)
5. Replace the drive with a larger capacity model.