InverteriS7Verification pending — cross-check with the official manual
iS7 Under Load (Alarm) — Under Load
Alarm — operational, inspection needed· AUTO-RESET
CAUSE
Why does it occur?
Alarm for underload condition when PRT-25 is set to 1.
REMEDY · Step by step
How to fix it?
- Check motor-load coupling
- Output via OUT31~33 No.6 Under Load function
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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