| Fanuc 6T Error Details |
|---|
| Item | Cause | Check procedure | Countermeasure |
| 1 | Miss setting of allowable error | Check parameter | Increase the setting. Refer to adjustment of position control. |
| 2 | Overshoot | When enough current does not flow to motor in acceleration or decceleration, deveiation value increase. Check waveform of CH1 on velocity control PCB and confirm whether overshoot is within 5% or not. | Increase the rapid traverse time constant. Increase gain (RV1) of velocity control. |
| 3 | Miss setting the secondary voltage of power transformer | Check wheter the secondary voltage of power transformer is correct.
Model 0 - 60V
Model 5, 10 - 90V
Model 10, 20, 30, 10H - 120V | Reset the setting |
| 4 | Trouble in position control and/or velocity control unit | Check the trouble by changing when there is a spare PCB. | Replace the PCB with spare one. |
| 5 | Drop of input power voltage | Check that the input power voltage is within +10% and -15% | Change the input tap of power transformer for servos |
| 6 | Voltage of power supply is abnormal | Check the voltage of control part. | Repair the fault. |
| 7 | Connection trouble | Check the power line of motor, tacho-generator signal, resolver signal, inductosyn signal etc. | Repair the fault. |
