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  1. PLCs, VFDs, Motors and Controls
    See attached photo https://ibb.co/m0pS4a The drive will not go past that part. Any idea what this could mean?
  2. PLCs, VFDs, Motors and Controls
    We have 4- 50hp drive controlled winch motors. The drive cabinets are in an exhaust drift in an underground mine, and are not in a controlled environment. Since install we have lost 6 drives- 2 because of the MOV jumpers, 1 because of contamination (those three were at commissioning), and the...
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