Code SVGN-124: Max gun torque must be > floor.
Issue Description & Safety Warning
The Fanuc R-30i Series Robot Controller has triggered a critical Max gun torque must be > floor. 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: The Max Gun Torque parameter in OverTorque Protection is less than the Standard OverTorque Value. The Max Gun Torque is the torque required to achieve the Max Pressure of the gun (according to the Pressure Calibration data). The Standard OverTorque Value is the lowest torque (i.e. floor) where an abnormal torque condition can be accurately observed due to gun friction. Remedy: To eliminate this alarm either the Max Gun Torque must be increased or the Standard OverTorque Value needs to be lower. If OverTorque Protection is still enabled, there might be no action necessary. View the Parameter Summary in OverTorque Protection to judge whether the values are acceptable. The Max Gun Torque can be increased by increasing the Max Pressure on the Servo Gun General Setup Screen. If OverTorque Protection is presently disabled, be sure to enable it after this. If the Pressure Calibration is not complete or the data is old, perform the Pressure Calibration again.
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-124 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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