A1B
Alarm code A1B indicates .
Cause analysis: 1. The motor is being driven by an external force; 2. Rotational or operating energy during DB stopping exceeds the capacity of the DB resistor; 3. Drive fault;
Remedy:
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Confirm the operating status.
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Check the frequency of DB use through DB resistor power consumption.
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Turn the drive power on again. If the alarm still occurs, the drive may be faulty.