Muting Discrepancy Error - Muting Group 1

What does FB MUTING Bit 0 mean?

A discrepancy has been detected in muting input group 1 (e.g., MuteIn1/MuteIn2) within the FB MUTING function block. This means the redundant muting sensors (e.g., light barriers) are not switching synchronously or are reporting different states, which can compromise the safe muting function, potentially leading to an unsafe bypass of a safety device. This triggers a safety stop.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Review the discrepancy time parameter for muting input group 1 in the FB MUTING configuration; adjust if needed based on application requirements.

2. 4

   Observe the muting sensors' behavior during a muting sequence to identify inconsistencies in their detection.