Code TMAT-002: Sensor failed during search
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical Sensor failed during search 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: Cause1: The TorchMate sensor circuit indicates the wire is in contact with the touch plate before the search move (too much stickout-the search start distance is too small.) Cause2: An electrical short exists in the touch circuit (for example, some circuits require a blocking diode on the power supply.) Remedy: Remedy1: Decrease the stickout, increase the search start distance, or replace the bent torch. Remedy2: Contact the supplier of your weld equipment regarding the touch circuit requirements and auxiliary wiring (if needed.)
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 TMAT-002 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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