Siemens Micromaster 430 or MM430 Drive
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Jun 11, 2022 9:18 am
How can resolve problem A0503 alarm in siemens micromaster 430 or MM430 drive ?
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Jun 11, 2022 9:45 am
Cause : UnderVoltage Limit. Main supply failed. Main supply (P0210) and consequently DC-link voltage (r0026) below specified limit (P2172).
Diagnose & Remedy\
1. Supply voltage (P0210) must lie within limits indicated on rating plate
2. Supply must not be susceptible to temporary failures or voltage reductions
3. Enable kinetic buffering (P1240 = 2)
