Biennial Inspections; Battery Replacement And Belt Inspection - Denso VP-G SERIES Installation & Maintenance Manual

3.4

Biennial Inspections

3.4.1

Battery Replacement and Belt Inspection

Replace the two types of backup batteries listed below and inspect the timing belts
every two years.
Please contact your DENSO representative to inspect timing belts and to adjust them.
Caution (1) The battery used in this device may present a risk of fire or
Battery type
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.
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
Back up the position data of
the servomotor encoder.
Back up programs,
parameters, and CAL data.
Caution: Without replacing
robot-specific data stored in each memory will be lost.
30
Used to: Located:
In the robot
unit
In the robot
controller
the backup
Refer to:
Section 3.4.2
Section 3.4.3
batteries, important