Nidec Control Techniques Digitax-SF Series User Manual

7
8
Troubleshooting
8. Troubleshooting
Digitax SF Instruction Manual
2. Warnings and Remedies
2. Warnings and Remedies
Warning No.
904
Excessive position error
Symptom
and
Possible Cause
The position error consecutively exceeded the setting of Position error warning detection:
Value (363.0) and the setting of Position error warning detection: Delay time (365.0).
Remedy
Adjust the tuning parameters.
Check the command from the host controller.
Check the wiring.
Verify that the brake is released.
Verify that the motor is not in a torque limit state per torque command limit.
Check the settings of Position error warning detection: Value (363.0) and Position error
warning detection: Delay time (365.0).
Reset Method
After eliminating the cause, then input RESET signal to the RESET terminal on the connector
CN1.
Warning No.
903 Encoder communication warning
Symptom
and
Possible Cause
Failed to obtain ABS encoder temperature and battery voltage data.
Remedy
Check for wire disconnection or loose connection of pins.
Keep the cable length no longer than 20 m.
Check for noise interference.
→ Use a shielded twist-pair cable.
→ Keep the encoder cable away from the motor power cable.
→ Connect Ground/Earth FG rmly.
→ Use ferrite core for the motor power cable and encoder cable.
If any of the above didn ’ t resolve the issue, please contact the supplier.
Reset Method
After eliminating the cause, then input RESET signal to the RESET terminal on the connector
CN1.

Nidec Control Techniques Digitax-SF Series Specifications

General

Brand	Nidec
Model	Control Techniques Digitax-SF Series
Category	Servo Drives
Language	English