Maintenance And Inspection Procedures; Replacing The Battery (Cr800-Q Controller Only) - Mitsubishi Electric CR800 Series Instruction Manual

5.3 Maintenance and inspection procedures

The procedures for carrying out periodic maintenance and inspection are described below. Thoroughly
comprehend the procedures, and follow the instructions. This work can be commissioned to the Mitsubishi Service
Dept. for a fee. (Never disassemble, etc., any of the parts not described in this section.)
The maintenance parts required for the maintenance and inspection are shown in
parts". Contact your dealer for these parts when required.

5.3.1 Replacing the battery (CR800-Q controller only)

In the CR800-Q controller, while power of controller is turned off, the programs must be saved by the backup
battery. The robot arm also uses backup batteries to save the position data of an encoder. The 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 lithium battery is one year, but this will differ according to the robot's usage state.
There are the kind of the errors about the battery shown in
batteries of the robot arm and the robot CPU unit (CR800-Q controller only).
Table 5-3 ： The error about the battery
Error number
7510
7500
Note1)
112n
Note2)
7451
Note2)
7450
Note1) "n" indicates the axis number
Note2) This error occurs in CR800-Q controller only.
The method of replacing the battery of the CR800-Q controller is shown below.
Refer to the separate "ROBOT ARM SETUP & MAINTENANCE" about robot arm's battery.
About the purchase of the battery, refers to
CAUTION
CAUTION
Description
Encoder battery voltage low
No encoder battery voltage
Encoder ABS position data lost
Robot CPU unit battery voltage low
No robot CPU unit battery voltage
If error No. 7500 or 112n occurs, the program data and other data in the controller
is lost and it becomes necessary to load the data again.
If error 7450 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 5-3. If error 7500 occurs, please exchange the
Page 78, "5.4 Maintenance
Maintenance and inspection procedures 5-75
5Maintenance and Inspection
Page 78, "5.4 Maintenance
Measure
Replace the battery as soon as pos -
sible.
The backup data cannot be
guaranteed if this error occurs.
Replace the battery as soon as pos -
sible.
The backup data cannot be
guaranteed if this error occurs.
parts".