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ALARM 39 in VLT FC102 drive

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(@click2electro)
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Joined: 4 years ago

Cause : Heatsink sensor comes when no feedback from the heatsink temperature sensor. The signal from the IGBT thermal sensor is not available on the power card.

  • The problem could be on the power card, on the gate drive card,
  • The ribbon cable between the power card and gate drive card.
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