InverterS300Verified · sol.ls-electric.com
S300 Low — Low Voltage
Trip — immediate stop
CAUSE
Why does it occur?
- Occurs when the voltage of the DC link circuit drops below the rated value during operation
- The trip type (Latch/Level) can be set in the PRT-02 (LV Trip Mode) code
REMEDY · Step by step
How to fix it?
Check the input power voltage (supply at or above the rated voltage), eliminate the cause of power fluctuation, and install a UPS if necessary.
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
Verified · sol.ls-electric.com
Open manual ↗S300 Standard User Manual V1.6 EN (260120)
9.5 Trip/Warning List · 14장 Troubleshooting · p.728 · V1.6 (2026-01-20)