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ALARM 27 in danfoss VLT FC280 drive

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(@click2electro)
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Cause : Brake IGBT/brake chopper short circuited comes when the brake transistor is monitored during start-up. If a short circuit occurs, the brake function is disabled, and an alarm is issued. The frequency converter is tripped.

  1. Remove the power to the frequency converter and remove the brake resistor.
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