SYNC EXCESS ERROR (POS DEV)

What does DS0001 mean?

This Fanuc Series 0i-D/0i Mate-D alarm occurs in feed axis control when the difference in positional deviation between the master and slave axes exceeds the setting value of parameter No. 8323. This alarm is specific to the slave axis.

• Mechanical binding, excessive friction, or backlash on the slave axis.
• Excessive load or uneven loading on the slave axis compared to the master.
• Incorrect setting of parameter No. 8323 (synchronized positional deviation limit).
• Servo gain tuning issues for either the master or slave axis.
• Faulty motor, encoder, or servo amplifier on the slave axis.

Click steps to track your progress.

1. 1

   Inspect the mechanical system of the slave axis for any binding, excessive friction, or backlash that could impede its smooth movement.

2. 2

   Verify the setting of parameter No. 8323 (synchronized positional deviation limit) and ensure it is appropriate for the application.

3. 3

   Check the motor, encoder, and servo amplifier of the slave axis for proper operation and any associated servo alarms.

4. 4

   Review the servo gain tuning parameters for both master and slave axes, considering a slight adjustment to the slave axis's gain if stable.

5. 5

   Measure the actual positional deviation of both axes during synchronized movement using diagnostic functions to pinpoint the discrepancy.

6. 6

   Ensure that the load on the slave axis is balanced and not disproportionately high compared to the master axis.