Emerson 710NPBA manual Installing a Field Expansion Module Mounting Assembly

User Instructions	UM581127000
Spec. No. 581127000 (Model 710NPBA)	Issue AB, March 22, 2012

INSTALLING A FIELD EXPANSION

MODULE MOUNTING ASSEMBLY

A field expansion module mounting assembly can be added to a system that has 24 or fewer module mounting positions.

Procedure

Danger: Adhere to the “Important Safety Instructions” presented at the front of this document.

Note: Refer to Figure 3-2as this procedure is performed.

1)Slide the expansion module mounting assembly into position directly beneath the bottom-most shelf of the module mounting assembly installed in the system (no space between shelves). Secure the expansion module mounting assembly to the relay rack with the provided 12-24 x 1/2" mounting screws and grounding washers.

Note: Install the ground washers so the teeth make contact with the metal on the mounting angles. Torque all screws to 65 in-lbs.

2)Remove the rear cover from the bottom-most shelf of the module mounting assembly installed in the system and the expansion module mounting assembly.

Note: Apply electrical anti-oxidizing compound to busbar mating surfaces before performing the next step.

3)Secure the existing shelf’s busbars to the expansion shelf’s mating busbars with the supplied interconnect busbars and hardware. Hardware build-up is: shelf’s busbar, interconnect busbar, 1/4" hardened flat washer, 1/4" Belleville lock washer, 1/4-20 nut. Install the Belleville lock washer so the concave side is towards the busbar. Torque all connections to 60 in-lbs.

4)Install the supplied side brackets (both sides) to tie the existing shelf to the expansion module mounting assembly.

5)If the Expansion Shelf Accepts DC-DC Converters: Refer to the Power System Installation Instructions (IM581127000) and install the converter output jumpers.

6)Remove the termination cable from the bottom controller bus interconnection connector on the bottom-most existing shelf and plug it into the bottom controller bus interconnection connector on the expansion shelf. See Figure 3-3.

7)Plug the controller bus connector on the cable exiting the top of the expansion shelf into the mating connector exiting the bottom of the shelf above it. See Figure 3-3.

8)Replace the rear covers removed in step 2) above.

9)Refer to the Power System Installation Instructions (IM581127000) and connect AC input power to the expansion shelf.

10)Refer to the rectifier and converter User Instructions and install modules into the expansion shelf as required.

Chapter 3. Maintenance Page 11

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