Epson LS20 Series User Manual

Maintenance 7. Arm #3
LS20 Rev.4 111
7.3 Replacing the Brake
Name
Quantity
Note
Maintenance
parts
Electromagnetic brake 1 1499588
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
1
For M5 screw
Torque wrench
1
Nippers
1
For cutting wire tie
Ultrasonic tension meter
1
Refer: Unitta U-508
The brakes are mounted on the 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.
Joint #3 brake
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 sh
aft 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 binding the motor
cables.
Remove the wire tie on the cables fixed to
the belt tensioner.
At this point, do not cut off a wire tie that
binds the cables to the Duct Plate.
Control
Board
Clip Band
User Plate
Belt Tensioner
Duct Plate
(6)
Disconnect the
following connector.
Connector: X32

NOTE

Epson LS20 Series Specifications

General

Brand	Epson
Model	LS20 Series
Category	Robotics
Language	English