
DRAW.
No.
TITLE
Pa
e
008
10
DESCRIPTIONDESIGNDATE EDIT
PERIODIC MAINTENANCE OF
BATTERY FOR THE ABSOLUTE
PULSECODER
B-65165E/02-02
FANUC LTD
5.Replacing the Battery
The Pulsecoder for the α series servo motor is not incorporated with a backup capacitor as
standard. To keep the absolute position information in the absolute Pulsecoder, you need to keep
the control power turned on during battery replacement. Follow the procedure explained below.
[Replacing procedure for the battery]
1. Make sure that the power to the SVM is on
(the 7-segment LED on the front of the SVM is on).
2.
Make sure that the emergency stop button of the system has been pressed.
3.
Make sure that the motor is not activated.
4.
Make sure that the DC link charge LED of the SVM is off.
5.
Remove the old battery, and install a new battery.
6.
This completes the replacement. You can turn off the power to the system.
WARNING
1. When replacing the battery, be careful not to touch bare metal parts in
the panel. In particular, be careful not to touch any high-voltage circuits
due to
2. the electric shock hazard.
3.
Before replacing the battery, check that the DC link charge confirmation
LED on the front of the servo amplifier is off. Neglecting this check
creates an electric shock hazard.
4.
Install the battery with correct polarity. If the battery is installed with
incorrect polarity, it may overheat, blow out, or catch fire.
5.
When installing the battery with its connector attached to connector
CX5X or CX5Y, attach the factory-installed protection socket to the
unused connector. When the +6-V and 0-V pins of CX5X or CX5Y are
short-circuited, the battery may overheat, blow out, or catch fire.