InverteriS7Verified · sol.ls-electric.com
iS7 Pre-PID Fail — Pre-PID Fail
Trip — immediate stop
CAUSE
Why does it occur?
PID feedback continuously below set value during Pre-PID operation (APP-34~36), indicating abnormal system state.
REMEDY · Step by step
How to fix it?
- Check PID feedback sensor
- Verify APP-34~36 settings
- Check process piping/valves
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