Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 474

15. MR-J3W-0303BN6 SERVO AMPLIFIER
15.10.3 Battery replacement procedure
WARNING
(1) When replacing battery with the control circuit power on
Replacing battery with the control circuit power on will not erase the absolute position data. Refer to section
15.10.4 for mounting procedure of battery on the servo amplifier.
To replace battery with the control circuit power off, refer to (2) of this section.
(2) When replacing battery with the control circuit power off
Replacing battery with the control circuit power off will erase the absolute position data, but battery can be
replaced without erasing the absolute position data in the following procedure.
In this procedure, MR-J3W03BTCBL03M battery connection cable is required.
MR-J3W03BTCBL03M cannot be added after home position is set. Make sure to connect MR-
J3W03BTCBL03M between the servo amplifier and the encoder cable when setting up the encoder cable.
Refer to section 12.5 for the replacement procedure of the battery.
Before mounting battery, turn off the main circuit power supply and check that the
charge lamp turns off. Otherwise, an electric shock may occur. In addition, when
confirming whether the charge lamp is off or not, always confirm it from the front of
the servo amplifier.
POINT
The internal circuits of the servo amplifier may be damaged by static electricity.
Always take the following precautions.
Ground human body and work bench.
Do not touch the conductive areas, such as connector pins and electrical parts,
directly by hand.
POINT
Replacing battery with the control circuit power off will erase the absolute position
data.
Servo amplifier
CN4
CN2A
or
CN2B
MR-J3BAT
Note. Make sure to install MR-J3W03BTCBL03M when setting up the encoder cable.
(Note)
Encoder cable
MR-J3W03BTCBL03M
15 - 69
Servo motor