Over-current at Constant Speed

What does E01 mean?

This fault indicates that the inverter detected an excessive current flow while the motor was operating at a constant speed. This can be caused by a short circuit in the motor output, a locked motor shaft, or a sudden heavy load on the motor, leading to inverter shutdown to prevent damage.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Evaluate the motor load to ensure it's not excessively heavy for the inverter's capacity.

2. 4

   Measure the motor's insulation resistance and winding resistance to check for internal shorts or faults.

3. 5

   Reduce the load or replace the motor/inverter if the problem persists.