Required equipment
Note
There are different variants of SMB units and batteries. The variant with the
3-pole battery contact has longer lifetime for the battery.
It is important that the SMB unit uses the correct battery. Make sure to order the
correct spare parts. Do not replace the battery contact!
NoteArt. no.Spare part no.Equipment, etc.
Spare part lists on
page 351.
Serial measurement
unit (SMB)
Content is defined in section
Special tools on page 347.
-Standard toolkit
See chapter Circuit diagram
on page 353.
Circuit diagram
Removal, SMB unit
The procedure below details how to remove the SMB unit.
NoteAction
Move the robot to the calibration position.1
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.
2
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 32
3
Shown in the figure Location of SMB
unit on page 233.
Unscrew the attachment screws of the SMB/BU
unit and carefully lift it out of its box.
CAUTION
Clean cover from metal residues before open-
ing.
Metal residues can cause shortage on the
boards which can result in hazardous failures.
4
Continues on next page
234 Product manual - IRB 6620
3HAC027151-001 Revision: T
© Copyright 2006-2018 ABB. All rights reserved.
4 Repair
4.5.1 Replacement of SMB unit
Continued
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