| Fanuc 6T Error Details |
| Item | Cause | Check procedure | Countermeasure |
| 1 | Motor Overload | Measure motor current. also check that the currentare below the following values. 0, 5 - continuous rated current 12A 10 - continuous rated current 27A 20, 30, 10H - continuous rated current 33A
| Reset thermal relay. Adjust the machine if the current in the idling feed operation exceeds the value on the left |
| 2 | Improper setting of thermal relay detecting overload | 0, 5 - 12A 10 - 27A 20, 30, 10H - 33A
| Reset |
| 3 | Power transformer overheating in velocity control | Check whether transformer is too hot to be touched by hand. | Reduce cutting conditions.Measure the motor current in the low idling feed. If the current is close to the rated current of motor, readjust the machine. |
| 4 | Trouble in the velocity control unit and position control | Change the PCB if there is a spare, and check it again. Perform the proper adjustment and setting. | Replace the PCB |
| 5 | Connecting trouble | Check the connecting of overload signal (OVL) line. | Repair the fault |
| 6 | Power source voltage abnormally | Check the velocity control unit voltage and control unit voltage | Repair the fault |