MAINTENANCE
B–63854EN/03
1. METHOD OF REPLACING BATTERY
659
SVM
Battery
A06B–6073–K001
CX5X
Battery case
A06B–6114–K500
SVM
Battery
A06B–6073–K001
CX5X
Battery case
A06B–6114–K500
– If a low battery voltage or a battery voltage of 0 V is indicated by an APC
(absolute pulse coder) alarm, replace the battery (A06B–6073–K001).
If a battery voltage of 0 V is indicated, you need to make a zero point
return.
– The absolute pulse coder of the ai series servo motor is incorporated
with a backup capacitor as standard. This backup capacitor enables an
absolute position detection to be continued for about 10 minutes.
Therefore, no zero point return need be performed if the time during
which servo amplifier power is kept off for battery replacement is
within 10 minutes.
On the contrary, the absolute pulse coder of the standard a series servo
motor is not incorporated with a backup capacitor. Be careful when
replacing the battery for this pulse coder. See [Caution No. 1 for
battery replacement] at the end of this section for details.
– The service life of the batteries is about two years with ai series servo
motors and one year with a series servo motors.
FANUC recommends that you replace the batteries periodically
according to the battery service life.
– The built–in batteries are not commercially available. They must be
purchased from FANUC. So, FANUC recommends that you keep
spares.
[Connection scheme 2]
Incorporating each SVM
with batteries