Epson LS20-B Series User Manual

Maintenance 8. Joint #4
LS20-B Rev.4 125
8.1 Replacing Joint #4 Motor
Name
Qty.
Note
Maintenance
part
AC Servo Motor 150 W 1 1646520
Tools
Hexagonal
wrench
width across flats: 1.5 mm
1
For M3 Set screw
width across flats: 3 mm
1
For M4 screw
width across flats: 4 mm
For M5 screw
Spanner
width across flats: 7 mm
1
For M4 bolt, M4 nut
Cross-point screwdriver (#2)
1
For M4 screw
Torque wrench
1
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 #4 motor
Removal
(1)
Turn ON the Controller.
(2)
Push down the shaft to its lower limit while pres
sing 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 t
he 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.
At this point, do 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 Duct Plate.
For details, refer to Maintenance 3. Covers.
(
7)
Disconnect
the following connectors.
Connectors: X241, X41, BR4 (Hold the clip to remove.)

NOTE

Epson LS20-B Series Specifications

General

Brand	Epson
Model	LS20-B Series
Category	Robotics
Language	English