5 Maintenance and Inspection
Maintenance and inspection procedures
5-143
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 CR800-Q controller uses a backup battery to save the program, etc. 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 Table 5-12. If error occurs, please exchange the battery
of the robot arm and robot CPU unit (CR800-Q controller only).
Table 5-12 ： The error about the battery
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 Page 147, "5.5 Maintenance parts".
If error 7500 or 112n (n indicates the axis number) 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.
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.
Error number Description Measure
7510 Encoder battery voltage low
Replace the battery as soon as pos
-
sible.
7500 No encoder battery voltage
112n
Note1)
Note1) “n” indicates the axis number
Encoder ABS position data lost
The backup data cannot be
guaranteed if this error occurs.
7451
Note2)
Note2)This error occurs in CR800-Q controller only.
Robot CPU unit battery voltage low
Replace the battery as soon as pos
-
sible.
7450
Note2)
No robot CPU unit battery voltage
The backup data cannot be
guaranteed if this error occurs.
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