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Rockwell Automation 1738-EP24DC ArmorPoint I/O 24V dc Expansion Power Supply User Manual

Installation instructions

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Publication 1738-IN020A-EN-E - June 2004

Installation Instructions

ArmorPoint I/O 24V dc Expansion Power
Supply, Series A

(Cat. No. 1738-EP24DC)

The 24V dc expansion power supply unit (Cat. no. 1738-EP24DC)
passes 24V dc field power to the I/O modules to the right of the
power supply. This unit extends the backplane bus power for up to
17 I/O modules to the right of the supply and creates a new field
voltage partition.

The expansion power supply also separates field power from I/O
modules to the left of the unit, effectively providing functional and
logical partitioning for:

• separating field power between input and output modules
• separating field power to the analog and digital modules
• grouping modules to perform a specific task or function

You can use multiple expansion power units with the ArmorPoint I/O
adapters to assemble a full system. For instance, if you are using the
1738-ADN adapter, you may use a 1738-EP24DC expansion power
unit to add additional modules in 5 to 17 module increments. For
example, if you had a 36 module system with a 1738 ArmorPoint I/O
adapter, you would have two 1738-EP24DC expansion power units to
provide more PointBus current for modules to the right of the supply.

1738-EP24DC

24V dc Power Supply

System

Power

Field

Power

A
U

X

P
O

W

E
R

24V dc Expansion
Power Supply

Wire marker

Mini connector

43770

LED
Indicators