Overcurrent

What does %c mean?

This protective fault indicates that the Inverter output current instantaneously exceeded 250% of the rated amperage. Common causes include a short circuit or ground fault on the output side, excessive load inertia, acceleration/deceleration times set too short, use of a special motor, starting the motor during free running, or operating a magnetic contactor on the output side. Unresolved overcurrent can severely damage the inverter's output stage or connected motor.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Avoid starting the motor while it is still free-running. Ensure the magnetic contactor on the output side of the inverter is not opened or closed during operation.

2. 4

   If a special motor is used, verify its compatibility and settings with the inverter.

3. 5

   After addressing the cause, perform a fault reset on the system.