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Okuma OSP Controller
Servo/Axis · Intermediate
Okuma OSP Alarm A 1469 - APA speed XS-axis
The actual position velocity of the Xs-axis (cam/synchronized axis) exceeded 15 m/min. Either the position encoder is misreading or the command given in synchronization mode is too large for the axis to follow safely.
1469
Okuma OSP Alarm A 1469 - APA speed XS-axis
APA speed XS-axis
The actual position velocity of the Xs-axis (cam/synchronized axis) exceeded 15 m/min. Either the position encoder is misreading or the command given in synchronization mode is too large for the axis to follow safely.
Common Causes
- Faulty position encoder on the Xs-axis
- Command given in the synchronization mode too large (cam profile too aggressive)
- Spindle speed too high for the programmed cam profile
Troubleshooting Steps
- 1Read the code number shown with the alarm: code hex value = Hexadecimal of APA velocity in 0.2 um/s units.
- 2Read the code: it is the hexadecimal of the APA velocity in 0.2 um/s units, so convert it to see how far above 15 m/min the Xs-axis went.
- 3Check the position encoder on the Xs-axis as the manual directs: inspect its cable, connector and mounting, and substitute a known-good encoder if readings look erratic.
- 4Review the cutting condition such as the cam profile and spindle speed as the manual suggests; a profile that demands more than 15 m/min of Xs-axis velocity must be slowed.
- 5Reduce the spindle speed or smooth the cam profile so the synchronized command stays within the Xs-axis velocity capability, then re-run the cycle and monitor APA velocity.
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