
B-63445EN/01-1
5/7
EDIT
DATE DESIG. DESCRIPTION
FANUC Power Mate 0
THE FUNCTION OF ABSOLUTE PULSE CODER
MAINTENUNCE MANUAL
TITLE
DRAW.NO. CUST.
SHEET
01
000512 New design
1
Swing the cable connected to JSn of servo amplifier or JFn of
controller. If an alarm is issued, replace the cable.
2
Replace the base PCB.
This alarm is generated when absolute pulse coder battery
becomes low.
If alarm 306 occurs, the reference position has been lost. After
replacing
the battery, re-set the reference position.
Replace the batteries in the β
ββ
β series servo amplifier.
Prepare lithium battery A02B-0168-K111(*) in advance.
1
Turn machine (servo amplifier ) power ON.
2
Remove the battery case from under the β
ββ
β series servo
amplifier module by holding the case at both sides and
pulling downwards.
3
Remove the connector the battery.
4
Replace the battery, and connect the connector.
5
Attach the battery case.
6
Turn machine (servo amplifier) power OFF.
Countermeasures
7.14
ALARM 306 TO 308
(ABSOLUTE PULSE
CODER BATTERY IS
LOW)
Absolute pulse coder
Battery replacement
WARNING
When replacing the memory backup batteries, keep the power to the
machine (CNC, servo amplifier) switched on, and hold the machine at
an emergency stop. Because this work must be carried out while the
power is kept switched on and the cabinet is open, only the personnel
who have been trained for safety are allowed to engage in the work.
When replacing the batteries, be careful not to touch the high-voltage
circuit section. If you touch the high-voltage circuit section when it is
uncovered, you will get an electric shock.
Procedure
CAUTION
1
When replacing the built-in batteries for the β
ββ
β series
servo amplifier, keep the power to the servo amplifier
switched on.
2
Note that we are not supposed to replace the batteries
for the control unit ( for memory back up)
Procedure for replacing
batteries for absolute
pulse coder.
(*)FANUC specification :A98L-0031
CAUTION
Replace the batteries for absolute pulse coder when machine (
servo amplifier ) power is ON.
Replacing the batteries with power OFF cause the absolute
position stored in memory to be lost.