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A133 alarm in siemens master drive

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(@click2electro)
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Cause : OFF3 missing - This fault comes when control signal [OFF3] was deactivated while a traversing command was being executed or checkback signal [OFF3] was deactivated while a traversing command was being executed.

  1. Check the activation of control signal [OFF3] from the user program.
  2. If checkback signal [OFF3] is missing, check the supply of control word 1.
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