Why doesn’t the fault relay change state when an external fault is activated on an ATV630 drive?

If the fault relay does not change state after an external fault is triggered, it is likely due to the auto-restart function being enabled on the ATV630 drive.

When auto-restart is active, the drive will delay activating the fault relay until the configured auto-restart time delay has expired. During this delay period, the relay may not immediately reflect the fault condition.

Key Point

• The fault relay will only change state after the auto-restart delay completes, not immediately when the external fault occurs.

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