Code SVGN-252: Panel detection was failed.(%d)
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical Panel detection was failed.(%d) alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Cause: Upper panel detection failed. The integer parameter ()identifies the failure type: type1: gun tip did not contact panel during search motion (internal condition to terminate search was not met). type2: exact position of detection could not be found (no distinct transition in the data) Remedy: type1: ensure that panel is present. If panel is not present, touch up new point by jog or point touchup. type2: confirm strength of panel. Rough indication of strength is that deflection during search motion does not exceed 3mm.
Source: FANUC Robot R-30iA Alarm Code List Operator's Manual
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Fanuc R-30i Series Robot Controller Alarms
Fanuc controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code SVGN-252 on the R-30i Series Robot Controller identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Fanuc's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 6553 Fanuc R-30i Series Robot Controller codes.
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