11-30
11-5 Periodic Maintenance
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
11
Troubleshooting and Maintenance
Replacement Battery Model and Specifications
Mounting the Backup Battery Unit
Mounting the Battery Unit for the First Time
Connect the Absolute Encoder Backup Battery Unit to the motor, then set up the absolute
encoder. Refer to "Absolute Encoder Setup"(P.9-4).
After the Absolute Encoder Battery Unit is attached, it is recommended that the control power
supply be turned ON and OFF once a day to refresh the battery.
If you neglect to refresh the battery, battery warning will occur due to voltage delays in the
battery.
Replacing the Battery Unit
If a battery warning occurs, the Absolute Encoder Backup Battery Unit must be replaced.
Replace the Battery Unit with the control power supply of the Servo Drive turned ON. If the
Battery Unit is replaced with the control power supply of the Servo Drive turned OFF, data held
in the encoder will be lost.
The Battery Warning will occur after you replace the Absolute Encoder Backup Battery Unit.
Use one of the following methods to clear it.
Use the alarm reset input signal of CN1 control inputs.
Use the front panel to perform the alarm clear (refer to page 9-25).
Use the absolute encoder setting in the CX-Drive.
Note: If the absolute encoder is cleared using the front panel or communications, all alarms
and multi-rotation data will be lost and the absolute encoder must be set up again. Refer
to "Absolute Encoder Setup"(P.9-4)
.
Item Specifications
Name Absolute Encoder Backup Battery Unit
Model R88A-BAT01G
Battery model ER6V (Toshiba)
Battery voltage 3.6 V
Current
capacity
2,000 mA·h
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