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3.4
Biennial Inspections
3.4.1
Battery Replacement and Check Items
Replace the two types of backup batteries listed in the upper table on this page and
inspect the timing belts for the 5th and 6th axes shown in the lower table on this page
during biannual inspection and maintenance.
Encoder backup battery
1
Memory backup battery
2
The position data of the encoder built in the servomotor is stored in the internal
memory of the encoder.
Programs, parameters, CAL data, etc. are stored in the internal memory of the robot
controller.
The backup battery for each memory retains the above data while the power to the
robot controller is turned OFF. However, these batteries have a limited lifetime and
must, therefore, be replaced regularly.
NOTE: If two years elapse from replacement of either backup battery, the "Time to
change controller backup battery" message will appear on the teach pendant.
No.
Check:
Timing belts on
the 5th and 6th
1
axes
Caution
(1) The battery used in this device may present a risk of fire or
chemical burn if mistreated. Do not recharge, disassemble,
heat above 100°C (212°F), or incinerate.
(2) Dispose of used battery promptly. Keep away from children.
Do not disassemble and do not dispose of in fire.
Backup Battery Types
Battery type
Back up the position data of
the servomotor encoder.
Back up programs,
parameters, and CAL data.
Caution: Without
robot-specific data stored in each memory will be lost.
Biennial Inspection Table (VS-G series)
Controller
How to check:
Power
OFF
Visually
Used to:
replacing
the
backup
Criterion
No lack of teeth or
excessive wear.
81
Located:
Refer to:
In the robot
Section 3.4.2
unit
In the robot
Section 3.4.3
controller
batteries,
important
What to do:
Contact DENSO,
Industrial Systems
Product Division.
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