InverteriS7Verified · sol.ls-electric.com
iS7 Lost Command — Lost Command
Trip — immediate stop· AUTO-RESET
CAUSE
Why does it occur?
- Speed command lost from terminal block, communication, or analog input
- Signal loss detected for PRT-13 time
REMEDY · Step by step
How to fix it?
- Check analog input wiring
- Check communication line
- Set PRT-12 for desired action (Free-Run/Dec/Hold)
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 ↗SV-iS7 User Manual Start-up V1.00 (150710) EN
p.71