InverterSINAMICS G120Verified · sol.ls-electric.com
SINAMICS G120 F30011 — Line phase failure
Trip — immediate stop
CAUSE
Why does it occur?
One of L1/L2/L3 has lost phase, or excessive voltage imbalance
REMEDY · Step by step
How to fix it?
Check the input breaker/fuses, the NFB connection, and the transformer side
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
Summary based on the official Siemens AG manual. For accurate and complete information, always consult the official manual.
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