Option Card External Fault

What does EF0 mean?

This fault occurs when the communication option card receives an external fault signal from the connected controller, or if a programming error exists on the controller side causing an external device's alarm function to activate. This indicates an issue originating from an external device or its control logic, leading to a protective shutdown of the drive.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Clear the external fault input signal from the controller.