Rockwell Automation T823X Trusted Power System - Manual (Page 11)

Trusted
TM
Power System T823X
Issue 9 Dec 08 PD-T823X 11
3.1. Input Connector
The Power Shelf can be used with any standard global line voltages. The standard AC input
connection to the Power Shelf is through three clip retained IEC320 type connectors rated at 10A /
250Vac in Europe/Asia and 15A /120Vac in North America.
3.2. Output Connector
The Power Shelf has two terminal blocks for DC output (each with three M4 screws). The V+ and V-
are floating with respect to frame GND, either of which can be connected to GND as required.
3.3. Current Sharing
Note: If there is a low load on a Power Shelf (less than 2A per Power Pack) then the current sharing
circuit may not work correctly and ‘PWR OK’ LED may not illuminate on the Power Packs.
In systems where more than one Power Shelf is being used, Shelves should connect their CS
terminals by using a power shelf interconnect cable TC-323. This ensures that the Power Shelves
current share.
Do not connect the TC-323 cable between ‘A’ and ‘B’ supplies or between two sets of shelves which
connect to separate busbars. The supplies will attempt to share current between the two busbars,
which may damage the power packs and shelves’ sensing circuits.
Unused connectors on the TC-323 ribbon cable should be tied back and left unused.