Leadshine EL8 Servo motor clonking sound and motion

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1 year 1 week ago #336943 by Will_cnc
Current Setup:
  • Raspberry Pi 5
    • 3 × Leadshine EL8 Servo Drives and 400W Motors

      Problem:
      I’ve recently set up LinuxCNC on a Raspberry Pi 5 and configured it to use the Probe Basic user interface.I’m experiencing an issue where the servo drives occasionally disconnect. The main symptom is that the motors sometimes make a “clonking” sound while running, as if there’s a mechanical fault and judder under movement . Power-cycling the system (turning it off and back on) sometimes clears the issue, and the motors then run normally.
      Could this problem be caused by poor latency on the Raspberry Pi 5, or possibly by the EtherCAT network going out of sync?Any advice or suggestions on how to resolve this issue would be greatly appreciated.


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1 year 1 week ago #336944 by Hakan
Show ethercat-conf.xml, please.
You probably need to add synchronization with DC clock.

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1 year 1 week ago #336947 by Will_cnc
 Is synchronisation something that has to be set up on the PI or is it configured within the .xml file ? 
 

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1 year 1 week ago #336948 by Will_cnc

Attachment not found

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1 year 1 week ago #336949 by Hakan
Its here, just add a negative sign, minus-sign, like below
 refClockSyncCycles="-5">
 

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