Epson LS3-401 series User Manual

Maintenance 8. Arm #4
126 LS Rev.10
8.2 Replacing the Timing Belt
Name Quantity Note
Maintenance
parts
U1 belt width 10 mm 1
LS3: R13B030234
LS6: 1674797
U2 belt
width 16 mm
1
LS3: R13B030235
width 15 mm
LS6: 1674798
Tools
Hexagonal wrench
width across flats: 3 mm
1
For M4 screw
Spanner
width across flats: 7 mm
1
Torque wrench
1
Nippers
1
For cutting wire tie
Force gauge
1
U1, U2: Belt tension *
Suitable cord (Length about 800 mm)
1
For belt tension
* : Regarding U axis belt setting tension
Model
Setting tension
Note
LS3
U1: 39N (4.0 ± 0.5 kgf)
U2: 69N (7.0 ± 0.5 kgf)
LS6 (a)
U1: 39N (4.0 ± 0.5 kgf)
U2: 69N (7.0 ± 0.5 kgf)
S/N: L6**00****,
or Controller firmware Ver. 7.1.4.3 or earlier
LS6 (b)
U1: 58N (5.9 ± 0.5 kgf)
U2: 102N (10.4
±
0.75 kgf)
S/N: L6**01**** or later,
and Controller firmware Ver. 7.1.6.0 or later
CAUTION
■
The belt must be installed with proper tension;
otherwise the following problems
may occur.
If falling below the lower limit : Jumping of the belt gears (position gap)
If exceeding the upper limit : Abnormal noise or vibration (oscillation),
decline in the life of driving parts
LS3: A brake is mounted on the Joint #3 motor to prevent the shaft from lowering 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).
LS6: A brake is mounted on the motor of Joints #3 and #4 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).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.

NOTE

Epson LS3-401 series Specifications

General

Brand	Epson
Model	LS3-401 series
Category	Robotics
Language	English