ABB IRC5P, Product Manual, Page: 138 / 220

7 Repair
7.5 Replacement of Axis Computer, PDB, PIB, SIB, MIB, SCB
138 3HNA009834-001 en Rev.06 Product Manual, Control Cabinet IRC5P
1. Turn the electrical disconnect switch ‘off’ and lock switch in ‘off’ position.
WARNING!
Make sure that the mains switch is ‘off’ and locked in ‘off’ position
before continuing. Also make sure that possible other connected systems are ‘off’.
2. Open controller front door and locate the unit to be replaced as shown in
Figure 70 .
Note:
The PIB board is mounted on top of the SIB board. Therefore, if the SIB
board is to be replaced, the PIB board must be removed first.
3. Disconnect all connectors. Note location of connectors to simplify re-
connection.
4. Slightly loosen attachment screws securing the board to the cabinet back- or
side panel. For the axis computer, the two screws on the left must be fully
removed.
5. Remove unit from controller.
Refitting
The procedure describes how to re-install the board.
WARNING!
Refitting activities must only be performed when controller is switched
‘off’ and all safety precautions under ‘Removal’ have been read.
Note:
Make sure that the new unit is of the same type as the old unit. For
information on the different types used, see ‘Unit Description, IRC5P’.
1. Place new unit in position over the attachment screws.
2. Slide the unit into position and tighten attachment screws.
3. Insert connectors.
Note:
If the SIB board was replaced, re-install PIB on top of the SIB board.
Note:
If the MIB board was replaced, move battery unit from old MIB to new
MIB as required. For information, see ’Replacement of Measuring System
Battery’ on page 167. Also move purge timer ( 70 /7) from old to new MIB
board. For more information, see ‘Unit Description, IRC5P’ manual.
4. Close controller front door.