PLCXGKVerified · sol.ls-electric.com
XGK 4 — Clock IC(RTC) Error
Critical — power cycle required
CAUSE
Why does it occur?
Clock IC (RTC) error
REMEDY · Step by step
How to fix it?
If it recurs on power reinput, request service center
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 ↗XGK CPU Module User Manual V2.0 (Eng)
14.5 Error Code List · p.211 · V2.0