Fanuc 7115 Alarm

If your machine uses a physical gearbox to change ranges, check the proximity sensors that detect the position of the gears. Look for LEDs on the sensors. Verify the sensors are not covered in coolant or oil. Ensure they are not loose. 7115 Alarm Summary Table Potential Issue Tips welded, bad aux contacts Replace contactors (KM1/KM2) I/O Modules No signal reaching PLC Check input status on FANUC diagnostics Wiring Broken wire in electrical cabinet Trace and repair connection Sensors Misaligned or damaged Clean, adjust, or replace sensor Preventing Future 7115 Errors

Broken wire in the feedback circuit between the contactor and the PMC. Troubleshooting Steps for FANUC 7115 fanuc 7115 alarm