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Variable Speed Drive (VSD) Failure

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Scenario: A variable speed drive on a critical system, the fault indicator LED is on. According to the VSD (variable speed drive), the error code is F4; the drive has detected an "under voltage" condition and shuts down. How do you identify if the failure is in the drive, in the motor or in a distorted supply voltage?
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Time: 02:07 More in Science & Technology

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