A0502 alarm in siemens micromaster 440 or MM440 drive

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 How can resolve problem A0502 alarm in siemens micromaster 440 or MM440 drive ?

Cause : Overvoltage limit - Overvoltage limit is reached. This warning can occur during ramp down, if the dc-link controller is disabled (P1240 = 0).

This warning is generated,
- if the dc-link controller is disabled (P1240 = 0).
- if pulses are enabled

Click here for more information

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