InverterS100Verification pending — cross-check with the official manual
S100 ULt — Under Load
Trip — immediate stop
CAUSE
Why does it occur?
- Motor underload trip activated, actual load is less than set level
- Operates when Pr.27 is set to non-zero
REMEDY · Step by step
How to fix it?
- Check motor-load connection
- Reduce underload level set value (Pr.29, Pr.30)
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
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