Epson LS20-B Series User Manual

Maintenance 7. Joint #3
LS20-B Rev.4 109
7.1 Replacing Joint #3 Motor
Name
Qty.
Note
Maintenance
part
AC Servo Motor 520W 1 2197985
Tools
Hexagonal
wrench
width across flats: 2 mm
1
For M4 set screw
width across flats: 3 mm
1
For M4 screw
width across flats: 4 mm
1
For M5 screw
Spanner
width across flats: 7 mm
For M4 bolt, M4 nut
Cross-point screwdriver (#2)
For M3, M4 screw
Torque wrench
Nippers
1
For cutting wire tie
Sonic tension meter 1
Z: Belt tension
93N (9.5 ± 0.75 kgf)
Material
Wire tie
-
A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving down
and rotating 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.
Joint #3 motor
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 is applied to both Joints #3 and Joint #4.
When the brake release switch is pressed, the respective brakes of the Joint #3 and
Joint #4 are released simultaneously.
Be careful of the
shaft falling and rotating 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.
For details, refer to Maintenance: 3.1 Arm Top Cover.
(5)
Remove the Clip Band
and Sheet binding the motor
cables.
Removed parts
will be used again. Be careful not
to lose them.
D
o not cut the wire tie (in the duct fittings outlet) that
binds the cables
to the duct plate.
Clip Band
Wire Tie
Duct Plate
Silicon Sheet
(6)
Remove
the User Plate and the Duct Plate.
For details, refer to Maintenance 3. Covers.

NOTE

Epson LS20-B Series Specifications

General

Brand	Epson
Model	LS20-B Series
Category	Robotics
Language	English