Phase failure

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A phase failure has been detected in the supply system. This fault indicates a loss of one or more phases in the input power supply, and it is detectable only when the drive is operating under load. Continued operation with a phase failure can damage the motor or inverter.

• One or more phases missing in the incoming power supply.
• Faulty connection of power cables to the drive.
• Internal power supply module failure.
• Motor connection phase issue.
• Power fuse blown in one of the phases.

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1. 1

   Check the supply system cables for missing phases.

2. 2

   Reset the fault by switching off the DC 24 V supply voltage.