Siemens Micromaster 420 or MM420 Drive
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Jul 01, 2024 9:11 am
Cause : Vdc-max Controller De- activated comes when the Vdc-max controller gets deactivated because it cannot maintain the DC link voltage within limits.
A0910 is an alarm in Siemens Micromaster 420 indicating a deactivated Vdc-max controller. The Vdc-max controller is responsible for keeping the DC link voltage within its allowable limits.
- Check parameter inverter input voltage.
