UM581127000 User Instructions
Issue AB, March 22, 2012 Spec. No. 581127000 (Model 710NPBA)
Page 12 Chapter 3. Maintenance
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Figure 3-2
Installing a Field Expansion Module Mounting Assembly
Interconnect
Busbars
588705200
(8-Position Expansion Shelf)
588705203
(Existing 24-Position Shelf Assembly)
(588705201 and 588705202 similar)
1/4" Hardened Flat Washer
1/4" Belleville Lock Washer
1/4-20 Nut
(16 places)
Torque to 60 in-lbs.
Apply electrical anti-oxidizing compound to
busbar mating surfaces before installing
Expansion Module Mounting Shelf.
Rear View
Bracket to secure
shelves together.
12-24 x 1/2"
Thread Forming
Hex Head Screw
(2 per side)
No. 10/12
Ground Washer
(2 per side)
(Torque to 65 in-lbs)
1. Slide the Expansion Module Mounting Shelf
into the relay rack.
2. Secure the Expansion Module Mounting Shelf
to the relay rack.
3. Remove rear cover from existing shelf and
the Expansion Module Mounting Shelf.
4. Secure the existing shelf’s busbars to the
expansion shelf’s busbars with the supplied
interconnect busbars.
5. Tie the existing shelf to the Expansion
Module Mounting Shelf with the supplied
brackets (both sides).
5. Remove the connector from the bottom
controller communications connector in the
existing shelf and plug it into the bottom
controller communications connector in the
expansion shelf. Plug the loose end of the
bottom controller communications connector
in the existing shelf into the loose end of the
top controller communications connector in
the expansion shelf.
6. Reinstall rear covers.
