Controller Overload (Deceleration)

What does OC4 mean?

The controller has overloaded during deceleration, often because the deceleration time (C0013) is set too short or the external brake resistor is inadequately dimensioned. Excessive regenerative energy not properly dissipated can damage the drive's DC bus components and lead to overvoltage faults.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Check the wiring and connection of the brake resistor for proper functionality.