Honeywell HC900 User manual

12/2018 Power Supply Rack Extension Kit # 51-52-33-149 1

HC900 Controller

Power Supply Rack Extension Installation

PS Rack Extension 900RPE - (current revision number)

Document Number Form: 51-52-33-149

Effective Date: 12/2018

Supersedes: 04/2005

Summary

• Optional field installation kit

• Installed on the rack next to the Primary

Power Supply

• Provides a rack extension to hold a 2nd

(Reserve) Power Supply and Power

Status Module per I/O Rack in order to

maintain power to the rack if the Primary

Power Supply fails

• Allows either Power Supply to be

replaced while maintaining power to the

rack using the other Power Supply

• Available for the 8-Slot and 12-Slot I/O

Racks

• Not available for the 4 Slot I/O Rack

8-Slot Rack

12-Slot Rack

8-Slot Rack

12-Slot Rack

Figure 1 PS Rack Extension Location

Procedure Follow the procedure in Table 1 to install a Power Supply (PS) Rack Extension to

an 8-slot or 12-slot I/O rack.

Table 1 – PS Rack Extension Installation

Step Action

1 Remove power to the rack to be extended.

2 Remove the rack from its mounting

and remove all modules from the

rack. Place the empty rack on a

flat surface with the back plate

down.

Controller CPU or Scanner Module Slot

Power Supply Slot

I/O Modules

Controller CPU or Scanner Module Slot

Power Supply Slot

I/O Modules

2 Power Supply Rack Extension Kit # 51-52-33-149 12/2018

Step Action

3 900R12-0200 (Standard Rack) can

be converted to 900R12R-0200

(Redundant power Supply). Locate

resistors R3,R4, R5 and R6 on the

I/O rack backplane. Cut and remove

the resistors, replace end cap.

4 Remove the screws from the

outside of the I/O rack side plate.

Retain the side plate.

JP21

I/O Rack

Side Plate JP21JP21

I/O Rack

Side Plate

5 Attach the PS extension rack to

the I/O rack with 4 of the screws

(SEMS M3 X 5.0 mm long)

provided in the kit.

Make sure that J3 on the PS

extension rack backplane

meshes with JP21 on the I/O

rack backplane.

J3 JP21

J3J3 JP21

6 Attach the side plate previously

removed from the I/O rack to the

PS extension rack using the 6

screws (Flat Head M3 x 6.0 mm

long) provided in the kit.

Note that the countersunk holes in

the plate should face outward.

J3 JP21

I/O Rack

Side Plate

previously removed

J3 JP21

J3J3 JP21

I/O Rack

Side Plate

previously removed

7 You will need to drill two mounting

holes (same size mounting holes

as the main rack) for the 900RPE

rack.

Place the updated rack in

position and mark the 2

mounting hole locations (top

and bottom of rack of the 900

RPE extension).

Remove the rack and drill the

mounting holes.

900RPE Rear

Mounting Plate

900RPE Rear

Mounting Plate

8 Re-install the Power Supply, CPU or Scanner and I/O modules.

9 If available, install the new Power Supply Module and Power Status Module into the 900RPE

rack.

10 Mount the updated rack assembly and connect a separate power source with disconnect to the

new power supply.

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