Cause : Deceleration energy backup error comes when an issue with the drive's ability to manage the energy generated by the motor during deceleration.

The dEb error code on a Delta VFD drive indicates a deceleration energy backup error. This error signifies an issue during the process of decelerating the connected motor.

1. Check the power system.
2. Replace power system with a larger capacity.
3. Use a different power system from the large load system.