Replacing Joint #2 Motor - Epson LS20-B Series Manual

Maintenance 6. Joint #2

6.1 Replacing Joint #2 Motor

Maintenance
AC Servo Motor (520 W)
Parts
Hexagonal
wrench
Cross-point screwdriver (#2)
Tools
Torque wrench
Nippers
Wiping cloth
Material Wire tie
Grease Grease (SK-1A)
NOTE 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 #2 Motor (1) Turn ON the Controller.
Removal
(2) Push down the shaft to its lower limit while pressing the brake release switch.
(3) Turn OFF the Controller.
(4) Remove the Arm Top Cover.
(5) Remove the User Plate and Duct Plate.
(6) Remove the Clip Band and Sheet binding the motor
(7) Disconnect the following connectors.
100
Name
width across flats: 2.5 mm
width across flats: 4 mm
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.
For details, refer to Maintenance: 3.1 Arm Top Cover.
For details, refer to Maintenance: 3 Covers.
cables.
The Clip Band and sheet will be reused when
installing the cable unit. Be careful not to lose them.
Do not cut the wire tie (in the duct fittings outlet) that
binds the cables to the duct plate.
Connectors: X221, X42 (Hold the clip to remove.)
Qty. Note
1 2197985
1 For M5 set screw
1 For M5 screw
1 For M4 screw
1
1 For cutting wire tie
1 For wiping grease
-
-
Duct Plate
Clip Band
Silicon Sheet
Wire Tie
LS20-B Rev.4