User manual

Publication 1738-SG001B-EN-P

ArmorPoint I/O

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The 1738-EP24DC expansion power unit passes 24V dc field power to the I/O modules to

the right of it. This unit extends the backplane bus power and creates a new field voltage

partition segment for driving field devices for up to 17 I/O modules. The expansion power

unit separates field power from I/O modules to the left of the unit, effectively providing

functional and logical partitioning for:

y separating field power between input and output modules

y separating field power to the analog and digital modules

y grouping modules to perform a specific task or function

You can use multiple expansion power units with any of the communication adapters to

assemble a full system. If you are using the 1738-ADN12 adapter, you may use a 1738-

EP24DC expansion power unit to add additional modules. For example, if you had a 36

module system with a 1738-ADN12 adapter, you would have at least two or more 1738-

EP24DC expansion power units to provide more POINTBus current for modules to the right

of the supply.

y 24V dc to 5V dc converter

y 1.3A, 5V dc output (extend backplane power)

y Starts new voltage distribution

y Partitioning

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