Position data change exceeded expected range

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A change in position data reported by the serial sensor was detected as exceeding the anticipated range. If this alarm occurs at machine startup, it can stem from a parameter setting error or cable shielding issues. If it arises during normal machine operation, a cable shielding problem is the more likely cause, suggesting an anomaly in position feedback.

• Parameter setting error related to sensor configuration (if alarm occurs at start-up)
• Inadequate shielding of the cable between the sensor (serial) and Spindle Amplifier

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1. 1

   Refer to the 'Parameters Related to Start-up' section in the FANUC AC SPINDLE MOTOR αi series Parameter Manual (B-65280EN) and verify all sensor setting parameters.

2. 2

   Check the shielding of the cable between the sensor (serial) and Spindle Amplifier for damage or improper termination.

3. 3

   Consult the 'Detectors' section in the FANUC SERVO AMPLIFIER αi series Descriptions (B-65282EN) for detailed information on cable specifications and installation.