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.
R3
R4
R3
R4
R3
R4
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.