Specifications

Publication 1794-SG002D-EN-P - May 2012
106 Select a FLEX Ex I/O Power Supply
E Type Power Supply
N Type Power Supply
Understanding System Planning
Part of system planning is determining what modules are needed for the
application, how many power supplies are needed, how to best partition the
system, and where to locate the system cabinets.
A key task in the development cycle is determining the number of power supply
outputs (thus power supplies) you will need.
Each power supply has four independent IS power outputs capable of 8.5W each.
In this example, we required eleven IS power outputs so three power supplies
were sufficient.
Power Requirements
Modules Requires
Fiber hub 8.5 W
Two ControlNet adapters 8.5 W each
Two analog inputs 7.5 W each
Two analog outputs 6.3 W each
Two thermocouple inputs 1.6 W each
Two digital outputs 7.5 W each
Three NAMUR digital inputs 2.8 W each
Two counter inputs 4.25 W each
1797-PS1E
or
1794-PS2E2
1797-PS1N
or
1797-PS2N2