Denso VS-6556G, Installation & Maintenance Manual

Page: 99 / 120

81
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.
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 Used to: Located: Refer to:
1
Encoder backup battery
Back up the position data of
the servomotor encoder. In the robot
unit
Section 3.4.2
2
Memory backup battery
Back up programs,
parameters, and CAL data. In the robot
controller
Section 3.4.3
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.
Caution: Without replacing the backup batteries, important
robot-specific data stored in each memory will be lost.
Biennial Inspection Table (VS-G series)
No. Check:
Controller
Power
How to check: Criterion What to do:
1
Timing belts on
the 5th and 6th
axes
OFF
Visually No lack of teeth or
excessive wear. Contact DENSO,
Industrial Systems
Product Division.