Siemens Micromaster 440 or MM440 Drive
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Mar 30, 2024 10:06 am
Cause : UnderVoltage Limit comes when the supply voltage is below the limit which is fixed in hardware.
1. Main supply failed- check the input supply.
2. Main supply (P0210) and consequently DC-link voltage (r0026) below specified limit (refer to parameter r0026).
3. Hardware issue- this alarm also comes when drive rectifier faulty.
