Emerson NetSure 721NPBB User Manual

NetSure
™
-48V DC Power System
User Instructions, UM582127000 (Issue AD, January 20, 2014)
Spec. No: 582127000 Code: UM582127000
Model No: 721NPBB Issue AD, January 20, 2014
[11]
Installing a Field Expansion Module Mounting Shelf
Spec. No. 588705000
DANGER! Adhere to the “Important Safety Instructions”
presented at the front of this document.
Note:
Refer to Figure 8 and Figure 9 as this procedure is
performed.
PROCEDURE
1. Install the expansion module mounting shelf directly
below the bottom-most module mounting shelf in the
rack. Use the mounting hardware provided in the
expansion busbar kit.
Hardware build-up is:
12-24 x 3/4" screw and flat washer, (1) set per side.
12-24 x 3/4" screw and ground washer, (1) set per side.
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. On the rear of the expansion module mounting shelf and
the existing shelf installed directly above it, remove the
rear shield that covers the output busbars.
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 for these connections are:
1/4-20 x 1" bolt,
1/4" Belleville lock washer,
1/4" flat washer.
Install the Belleville lock washer so the concave side is
towards the busbar. Torque all connections to 60 in-lbs.
If installing a second expansion module mounting shelf,
1/4-20 nuts (included) are required in lieu of the 1/4-20 x
1” bolts (see Figure 8).
4. Disconnect the cable coming from the distribution
cabinet from the bottom connector on the bottom-most
existing module mounting shelf.
5. Connect the bottom connector on the bottom-most
existing module mounting shelf to the top connector on
the expansion module mounting shelf.
6. Connect the cable disconnected in step 4) (coming from
distribution cabinet) to the bottom connector on
expansion module mounting shelf.
7. Replace the rear covers removed in step 2) above.
8. Refer to the Power System Installation Instructions
(IM582127000) and connect AC or DC input power to the
expansion module mounting shelf.
9. Refer to the Rectifier or Converter Instructions and install
rectifier or converter modules into the expansion module
mounting shelf as required.
Danger

Emerson NetSure 721NPBB Specifications

General

Brand	Emerson
Model	NetSure 721NPBB
Category	Power Supply
Language	English