Controller Overload during Deceleration

What does OC4 mean?

The drive controller has experienced an overload condition during deceleration, primarily caused by the deceleration time (C013) being set too short. This leads to regenerative energy being fed back to the DC bus faster than it can be dissipated, causing the bus voltage to rise and triggering an overload. This can damage the inverter if not properly managed.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Consider installing or checking the brake chopper if the application involves high inertia loads or rapid deceleration requirements.