Siemens Micromaster 440 or MM440 Drive
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Jun 11, 2022 5:31 pm
How can resolve problem A0502 alarm in siemens micromaster 440 or MM440 drive ?
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Jun 11, 2022 5:33 pm
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
- if actual dc voltage r0026 > r1242.
Diagnosis & Remedy
If this warning is displayed permanently, check drive input voltage .
If this warning is displayed permanently, check drive input voltage .
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