External Fault (Input Terminal S3)

What does EF3 mean?

An external fault has been triggered at multi-function input terminal S3. This signifies that an external device connected to S3 has activated an alarm function, or there's an issue with the wiring or configuration of terminal S3. This fault will typically cause the drive to stop operation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Verify that the multi-function input parameter for S3 (e.g., H1-03) is correctly set for external fault detection and that no unused terminals are inadvertently configured.