InverterSINAMICS V20Verified · sol.ls-electric.com
SINAMICS V20 A502 — Overvoltage warning
Warning — monitor· AUTO-RESET
CAUSE
Why does it occur?
DC link voltage has risen to just below the trip level.
REMEDY · Step by step
How to fix it?
Increase deceleration time, check the braking resistor, and monitor the input voltage.
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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