Epson G3 Series User Manual

Maintenance 7. Arm #3
G3 Rev.14 125
7.2 Replacing the Timing Belt
Name
Quantity
Note
Maintenance
parts
Z belt width 9 mm 1 R13B030213
Tools
Hexagonal wrench
width across flats: 2.5 mm
1
For M3 screw
width across flats: 3 mm
1
For M4 screw
Nippers
1
For cutting wire tie
Force gauge
1
Belt tension 74N (7.5
±
0.5 kgf)
Suitable cord (Length about 800 mm)
1
For belt tension
Material
Wire tie
2
A brake is mounted on the motor of Joint #3 to prevent the shaft from moving down due to
the weight of the end effector while the power to the Controller is OFF or while the motor
is in OFF status (MOTOR OFF).
Note that the brake will not work during the replacement procedure.
Move the shaft down to its lower limit before the replacement procedure following the
removal steps from (1) to (3).
Z belt
Removal
(1)
Turn ON the Controller.
(2)
Push down the shaft to its lower limit while pressing the brake release switch. Be
sure to keep enough space and prevent the
end effector
hitting any peripheral
equipment.
The brake release switch affects only Joint #3. When the brake release switch is
p
ressed, the brake for Joint #3 is released simultaneously.
Be careful of the
shaft while the brake release switch is being pressed because
the
shaft may be lowered by the weight of an end effector
.
(3)
Turn OFF the Controller.
(4)
Remove the arm
top cover and the arm bottom cover.
For details, refer to Maintenance: 3. Covers.
(5)
Remove motors of the Joint #3 and #4.
For details, refer to steps from (1) to (17) in
Maintenance: 7.1 Replacing Joint #3
Motor.
(6)
Remove the brake unit mounting plate
from the
motor blade.
3-M3×
10
Z belt
Motor plate
Brake unit
mounting plate
(7)
Remove the Z belt.

Epson G3 Series Specifications

General

Brand	Epson
Model	G3 Series
Category	Robotics
Language	English