Rockwell Automation T823X Trusted Power System - Manual (Page 9)

Trusted
TM
Power System T823X
Issue 9 Dec 08 PD-T823X 9
2. Assembly
A pair of brackets mounted in to a 19” frame supports up to 4 Power Shelves and are required to
provide support at the rear of the Power Shelf
The brackets supplied mount the equipment by its 19 inch rack ears and provide a box structure to
brace the power supplies. The back of the power supplies are fixed using M3.5 screws that are fixed
via tapped holes in the Power Shelf. The front of the power shelf is located and supported via screws
through the lugs of the Power Shelf.
The Mounting bracket occupies 4U and can accommodate up to 4 Power supply shelves. The design
is such that no space outside the 4U aperture is required. When installed it is possible to remove
individual Power Shelves should this be required. The design of the mounting bracket does not
obstruct access to the front or back of the Power Tray.
Power Packs are slotted into the 1U Power Shelf with the first Power Pack in the right hand slot, as
shown in Figure 4. Each Power Pack provides 750W (31.25A at 24Vdc) to the DC output on the Power
Shelf.
The standard AC input connection to the Power Shelf is through IEC320 type connectors rated at
10A/250Vac in Europe/Asia and 15A/120Vac in North America.
Figure 3 AC Power Connectors and Retaining Clips
Output terminal blocks on each Power Shelf have three M4 screw connections. Ring type connectors
should be used when connecting from the Power Shelf to system power distribution bus bars.
The Power Port plugs into the back of the Power Shelf and requires a 24V supply. The Power Port can
provide monitoring and control via a 25 way D connector when connected to a Power Controller. A
separate connector (CON3) via a push fit connector (supplied), provides DC and AC fail contacts.
When more than one Power Shelf is used, Power Ports are linked via the CS terminal, using a power
shelf interconnect cable to enable current sharing.
Spare slots in the Power Shelf are covered by Power Shields.
The 1U Power Controller is connected via the Power Port, using a TC-323 Power Shelf Interconnect
ribbon cable, and allows live configuration of output voltage. The Power Controller can monitor up to 12
Power Packs in 4 Power Shelves. Each Power Shelf is identified by the Power Controller by selecting
addresses on the Power port as described in paragraph 5.2.4.
Unused slots in the 4U brackets may be used for other equipment or fitted with blanking plates.
Unused connectors on the TC-323 ribbon cable should be tied back and left unused.