PLCXEMVerified · sol.ls-electric.com
XEM 500 — Data Memory Backup Not Possible
Trip — immediate stop
CAUSE
Why does it occur?
Data memory backup not possible (battery)
REMEDY · Step by step
How to fix it?
If no battery error, power reinput; remote mode switches to STOP mode
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 ↗XGB Troubleshooting Manual
3.1 CPU Error Code List · p.41 · -