breakerEOCRVerified · sol.ls-electric.com
EOCR U-C — Under Current
Trip — immediate stop
CAUSE
Why does it occur?
- Under current
- Current fell below the set lower level (30~70% of rated); operates in 3s
- Used to detect no-load/idle (broken shaft, dry-running pump)
REMEDY · Step by step
How to fix it?
Check the mechanical linkage/load (broken drive shaft, no-load running).
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 PDF ↗LSIS EMPR (DMPi) Series Manual (E 09-1909)
p.18