EF0

Option Card External Fault

Yaskawa · J1000 AC Drive

What does EF0 mean?

An external fault condition has been received by the drive from the PLC via an option card. The drive's response (stopping or continuing to run as an alarm) depends on the F6-03 parameter setting. This fault typically points to an issue originating from an external device, a problem with the PLC program's fault handling, or a communication issue.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Thoroughly review the PLC program for any logic errors related to external fault detection or handling and implement necessary corrections.

Source: Yaskawa J1000 AC Drive
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