InverterV20Verified · sol.ls-electric.com
V20 A911 — Vdc_max controller active
Warning — monitor· AUTO-RESET
CAUSE
Why does it occur?
- The Vdc_max controller is working to keep the DC-link voltage (r00
- below the level specified in r1242.
REMEDY · Step by step
How to fix it?
- Keep supply voltage within rating and match ramp-down time (P11
- to load inertia. Higher inertia needs longer ramp times; otherwise apply a braking resistor.
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.
Open official manual ↗