Muting Sequence Violation

What does FB MUTING Bit 6 mean?

The programmed muting sequence has been violated. This occurs if muting sensors are activated in an incorrect order or at incorrect times, or if an object remains in the detection zone for too long during muting. This is a critical safety fault, as it implies an attempt to bypass the safety function improperly or unintentionally, causing an immediate safety stop.

• Muting sensors (e.g., MuteIn1, MuteIn2, MuteIn3, MuteIn4) activated in an incorrect sequence or out of programmed timing.
• An object remaining in the muting zone and blocking a sensor after the expected passage time.
• Incorrect 'MuteSequenceType' parameter (e.g., P_MuteSeqType) selected in the safety controller for the application.
• Damaged or misaligned muting sensors causing erratic or delayed signal detection.
• Faulty wiring leading to intermittent signals from one or more muting sensors during the sequence.

Click steps to track your progress.

1. 1

   1. Carefully observe the passage of the object through the muting zone and the activation sequence of all muting sensors (e.g., MuteIn1, MuteIn2, MuteIn3, MuteIn4).

2. 2

   2. Ensure there are no foreign objects or debris obstructing any muting sensor beam path after the primary object has cleared the zone.

3. 3

   3. Review the 'MuteSequenceType' parameter in the safety controller's configuration to ensure it matches the physical arrangement and required sequence of sensors.

4. 4

   4. Verify the alignment and functionality of each individual muting sensor using its diagnostic LED or a dedicated test object.

5. 5

   5. Perform a continuity and resistance check on the wiring for all muting sensors to confirm signal integrity.