PLCSafety-PLCVerified · sol.ls-electric.com
Safety-PLC 6 — External Test Signal Failure
Critical — power cycle required
CAUSE
Why does it occur?
External test signal failure
REMEDY · Step by step
How to fix it?
Check input circuit and wiring
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 ↗XGS Safety Controller (Safety PLC) Manual V1.1 202012 (Eng)
12.5 Error Code List · p.83 · V1.1