Rockwell Automation 1734-EPAC POINT I/O ac Power Supply - Manual (Page 6)

6 POINT I/O 120/240V ac Expansion Power Supply
Publication 1734-IN017A-EN-P - December 2005
You can use multiple ac expansion power supplies with POINT I/O adapters
to assemble a full system. For instance, if you are using the 1734-ADN
adapter, you may use an ac expansion power supply to add additional modules
in 4 to 17 module increments. For example, if you had a 36 module system
with a 1734 POINT I/O adapter, you would have two 1734-EPAC ac
expansion power supplies to provide more PointBus current for modules to
the right of the supply.
Install the ac Expansion Power Supply
To install the power supply on the DIN rail, proceed as follows.
1. Position the power supply vertically above the DIN rail.
2. Engage the interlocking side pieces with the unit on the left.
3. Press down firmly to install the power supply on the DIN rail.
The locking mechanism will lock the power supply to the DIN rail.
Remove an ac Expansion Power Supply from the DIN Rail
1. To remove ac expansion power supply from the DIN rail, pull up on
the RTB removal handle to remove the terminal block.
ATTENTION
You can only use the 1734-EPAC ac expansion power supplies with the
1734 POINT I/O adapters, such as the 1734-ADN, 1734-ADNX,
1734-APB, 1734-ACNR, and 1734-AENT adapters.
Do not use with the 1734-PDN module or with POINTBlock modules.
WARNING
When you insert or remove the power supply while backplane
power is on, an electrical arc can occur. This could cause an
explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before
proceeding. Repeated electrical arcing causes excessive wear to
contacts on both the power supply and its mating connector.
Worn contacts may create electrical resistance that can affect
power supply operation.