Maintenance 9. Troubleshooting
No. Message Remedy Note 1 Note 2
9710
Serial encoder initialization failure.
Reboot the controller. Check the motor, the
DMB, or the encoder IF board.
Check the robot configuration.
Check the signal cable.
Replace the DMB and encoder I/F board.
Serial encoder communication failure.
Reboot the controller. Check the motor, the
DMB, or the encoder IF board.
Check the robot configuration.
Replace the DMB and encoder I/F board.
Servo CPU watchdog timer failure.
Reboot the controller. Check the motor or
Replace the DMB.
Check the noise countermeasures.
9713
Current control circuit WDT failure.
Reboot the controller. Check the controller.
Check the power cable connection.
Check the 15V power supply and cable
connection.
Replace the DMB.
Check the noise countermeasures.
Encoder is reset. Reboot the controller.
Power supply failure of the absolute encoder.
Replace the battery to a new one. Check
the robot internal wiring.
Reset the encoder.
Check the signal cable connection.
9717
Backup data failure of the absolute encoder.
Check the signal cable connection.
9718 Absolute encoder battery alarm.
Replace the battery.
Check the signal cable connection.
9719
Position failure of the absolute encoder.
Reset the encoder. Replace the motor.
Replace the motor. (Encoder failure)
Speed is too high at controller power ON.
Stop the robot and reboot the controller.
Reboot the controller.
9721 Absolute encoder over heat.
temperature of the encoder
decreases.
9722
R/D converter detected the error.
Reset the encoder, or check for the encoder
and manipulator internal wiring.
Resets the encoder.
Check the signal wiring of the manipulator
(loose pin, disconnection, short).
Replace the resolver board.
9723
G sensor communication error.
Check for the signal cable connection or
manipulator internal wiring.
Check for the signal cable connection.
Check the signal wiring of the manipulator
(loose pin, disconnection, short).
Check the noise countermeasure.
Replace the control board.
9724
G sensor data error.
Check for the control board.
Replace the control board.
9725
Gap occurred between multi-turn data and
R/D conversion data.
Reset the resolver
Check the noise countermeasure.
Replace the resolver board.
9726
Resolver’s excitation signal is disconnected.
Reset the encoder, or check for the resolver
board and manipulator internal wiring.
Check the signal wiring of the manipulator
(loose pin, disconnection, short).
Replace the resolver board.
9727
S-DSP detected the communication error in
DSP.
Reboot the Controller.
Check the noise countermeasure.
9728
Current feedback data error is detected.
Check for DMB.
Check the noise countermeasure.
D-DSP detected the communication error in
Check the noise countermeasure.
RC90 (EPSON RC+ 7.0) Rev.4
194