MAINTENANCE MANUAL
71
STE 85357
2.7
Reduction Gear Replacement
The reduction gear is to be replaced by our service engineer. If it is replaced by the
customer, we will not guarantee any consequential trouble or accident.
!
DANGER
• The reduction gear should be replaced with a new one only after the controller power supply
plug is removed. If the work is done while the power is connected, you may get an electric
shock or the robot may malfunction, which is very dangerous.
!
CAUTION
• Because the reduction gear is disconnected, the mechanical home point shifts and proper
control cannot be done. To avoid this, home return operation is necessary after
replacement of the reduction gear. For the home return procedure
s, see “Section 5. Robot
Home Point and Position Detector Error.”
2.7.1
Type of Reduction Gear
The reduction gears used in this robot are shown below.
When you place an order for the reduction gear for replacement, specify the robot
model (THL300, THL400), axis name, type and our drawing number.
Table 2.9 Type of reduction gear (THL300, THL400)
Description
Axis name
Our drawing No.
Unit code
Reduction gear
Axis 1
S890907
Y610A3NG0
Axis 2
S890906
Y610A3NH0
Axis 4
S890969
Y610A3NJ0