MAINTENANCE
B–63854EN/03
1. METHOD OF REPLACING BATTERY
661
The pulse coder for the a series servo motor is not incorporated with a
backup capacitor as standard. To keep the absolute position information
in the absolute pulse coder, 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 the electric shock hazard.
2 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.
3 Install the battery with correct polarity. If the battery is
installed with incorrect polarity, it may overheat, blow out, or
catch fire.
4 Avoid a short–circuit between the +6 V and 0 V lines of a
battery or cable. A short–circuit may lead to a hot battery, an
explosion, or fire.
[Caution No. 1 for battery
replacement]