Siemens Micromaster 440 or MM440 Drive
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Jun 12, 2022 10:22 am
How can resolve problem A0910 alarm in siemens micromaster 440 or MM440 drive ?
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Jun 12, 2022 10:23 am
Cause : Vdc-max controller de-activated - Vdc max controller has been de-activated, since controller is not capable of keeping DC-link voltage (r0026) within limits (refer to r0026 and P1240).
- Occurs if main supply voltage (P0210) is permanently too high.
- Occurs if motor is driven by an active load, causing motor to goes into regenerative mode.
- Occurs at very high load inertias, when ramping down.
Diagnosis & Remedy
Check the following:
- Input voltage (P0210) must lie within range.
- Load must be match.
