ABB IRB 6620 Product Manual page 234

4 Repair
4.5.2 Replacing the brake release board
Continued
Removing, brake release board
Use this procedure to remove the brake release board.
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234
Action
DANGER
Turn off all:
• electric power supply to the robot
• hydraulic pressure supply to the robot
• air pressure supply to the robot
Before entering the robot working area.
ELECTROSTATIC DISCHARGE
(ESD)
The unit is sensitive to ESD. Before handling
the unit read the safety information in section
The unit is sensitive to ESD on page
Remove the cover for the push button guard.
Remove the push button guard from the SMB
cover.
Take a picture or make notes of how the robot
cabling is positioned in regard to the brake
release board.
Unscrew the attachment screws of the
SMB/BU unit and carefully lift the unit out of
its box.
Let the battery stay connected, to avoid the
need of synchronization of the robot!
CAUTION
Clean cover from metal residues before
opening.
Metal residues can cause shortage on the
boards which can result in hazardous failures.
Disconnect the connectors X8, X9 and X10
from the brake release board.
© Copyright 2006-2020 ABB. All rights reserved.
Note
60.
Shown in the figure
release board on page
The guard must be removed to ensure
a correct refitting of the brake release
board.
X8
X9
xx1700000978
Location of the brake release unit is
shown in the figure
release board on page
Product manual - IRB 6620
3HAC027151-001 Revision: W
Location of brake
233.
X10
Location of brake
233.