Muting EDM Monitoring Error - EDM2

What does FB MUTING Bit 5 mean?

An External Device Monitoring (EDM) error has been detected for the EDM2 feedback loop of the FB MUTING. This indicates a fault in the external safety output circuit (e.g., safety contactors) or its feedback path, which should confirm that the outputs have switched correctly in response to a muting event. This prevents unsafe operation if the outputs fail to respond, leading to a safety stop.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Review the EDM monitoring time parameter in the FB MUTING configuration; adjust if the contactor's switching time legitimately requires more time.

2. 4

   Measure the voltage across the EDM input to verify the feedback signal's state during activation and deactivation of the monitored device.