Nidec Control Techniques Digitax-SF DA21223, Instruction Manual

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7
8
Troubleshooting
8. Troubleshooting
Digitax SF
Instruction Man
ual
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 firmly.
→ 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.