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 Rac
k 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
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