Replacing The Brake - Epson LS20 Series Manipulator Manual

7.3 Replacing the Brake

Maintenance
Electromagnetic brake
parts
Hexagonal wrench
Tools
Torque wrench
Nippers
Ultrasonic tension meter
The brakes are mounted on the Joints #3 and #4 to prevent the shaft from moving down
NOTE

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.
(1) Turn ON the Controller.
Joint #3 brake
Removal
(2) Push down the shaft to its lower limit while pressing the brake release switch. Be
(3) Turn OFF the Controller.
(4) Remove the Arm Top Cover.
(5) Remove the clip band binding the motor
(6) Disconnect the following connector.
LS20 Rev.4
Name
width across flats: 1.5 mm
width across flats: 3 mm
width across flats: 4 mm
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.
For details, refer to Maintenance: 3.1 Arm Top Cover.
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.
Connector: X32
Maintenance 7. Arm #3
Quantity
1 1499588
1 For M3 set screw
1 For M4 screw
1 For M5 screw
1
1 For cutting wire tie
1 Refer: Unitta U-508
Duct Plate
Belt Tensioner
Control
Board
Clip Band
Note
User Plate
111