Maximum Muting Time Exceeded

What does FB MUTING Bit 7 mean?

The maximum allowed duration for the muting function has been exceeded. This indicates that an object has remained in the muting zone for longer than permitted, or the 'MaxMutingTime' parameter is set too short for the process. This fault ensures that muting is not active indefinitely, which would compromise safety and results in a safety shutdown.

• The object being transported through the muting zone is moving too slowly, exceeding the allowed muting time.
• The 'MaxMutingTime' parameter (e.g., P_MaxMuteTime) in the safety controller is set too low for the application's requirements.
• An object has become stuck or stopped within the muting zone, continuously blocking the safety light curtain.
• Muting sensors are not deactivating correctly after the object has passed, causing the muting state to persist.
• Incorrect detection logic or faulty programming leading to the timer not resetting appropriately.

Click steps to track your progress.

1. 1

   1. Measure the time an object spends within the muting zone from entry to exit, comparing it to the 'MaxMutingTime' parameter.

2. 2

   2. Access the safety controller's programming interface and adjust the 'MaxMutingTime' parameter (e.g., increase from 10s to 15s) to match actual process requirements.

3. 3

   3. Clear any obstructions or ensure the object passes completely through the muting zone without stopping or pausing.

4. 4

   4. Test the deactivation of all muting sensors (e.g., MuteIn1-MuteIn4) after an object has cleared, ensuring they return to their unblocked state.

5. 5

   5. Verify that no sensor is being held in an active state unnecessarily after the object has passed through the muting light curtain.