Replacing The Backup Battery - Mitsubishi Electric RV-4FM-SE Series Instruction Manual

5.3.5 Replacing the backup battery

An absolute encoder is used for the position detector, so while power of controller is turned off the position must
be saved by the backup battery. The controller also uses a backup battery to save the program, etc. The battery
is the lithium battery. These batteries are installed when the robot is shipped from the factory, but as these are
consumable parts, they must be replaced periodically by the customer.
The guideline for replacing the battery is one year, but this will differ according to the robot's usage state. There
exists the kinds of the errors about the battery shown in
battery of the robot arm and the controller simultaneously.
Table 5-5 ： The error about the battery
Item Error number
7520
7510
7500
7520
133n Note1)
112n
Note1) "n" indicates the axis number
The method of replacing the battery of robot arm is shown below.
refer to the separate "Instruction manual/Controller setup, basic operation, and maintenance" about controller's
battery.
About the purchase of the battery, refers to
CAUTION
Description
The battery consumption time was exceeded
Battery voltage low
No battery voltage
The battery consumption time was exceeded
Encoder battery voltage low。
Encoder ABS position data lost
Page 102, "5.5 Maintenance
If error 7500 or 112n occurs, the program data and other data in the controller is lost
and it becomes necessary to load the data such as program and origin data again.
Table 5-5. If error 7500 occurs, please exchange the
Replace the battery
The backup data cannot
be guaranteed if this error
occurs.
Replace the battery
The backup data cannot
be guaranteed if this error
occurs.
parts".
Maintenance and inspection procedures 5-99
5 Maintenance and Inspection
Measure