Siemens Micromaster 430 or MM430 Drive
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Jun 11, 2022 12:05 pm
How can resolve problem A0912 alarm in siemens micromaster 430 or MM430 drive ?
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Jun 11, 2022 12:06 pm
Cause : Vdc-min controller active. Vdc min controller will be activated if DC-link voltage (r0026) falls below minimum level (P2172). The kinetic energy of the motor is used to buffer the DC-link voltage, thus causing deceleration of the drive
So short mains failures do not necessarily lead to an undervoltage trip.
