Rockwell Automation 1771-IFE , D17716.5.90 USER MNL. ANALOG INPUT Module - Manual (Page 14)

Installing the Input Module
Chapter 2
2-2
Your module receives its power through the 1771 I/O power supply. The
module requires 750mA from the backplane.
Add this current to the requirements of all other modules in the I/O chassis
to prevent overloading the chassis backplane and/or backplane power
supply.
Place your module in any I/O module slot of the I/O chassis except for the
extreme left slot. This slot is reserved for PC processors or adapter
modules.
Group your modules to minimize adverse affects from radiated electrical
noise and heat. We recommend the following.
Group analog input and low voltage dc modules away from ac modules
or high voltage dc modules to minimize electrical noise interference.
Do not place this module in the same I/O group with a discrete
high-density I/O module when using 2-slot addressing. This module
uses a byte in both the input and output image tables for block transfer.
After determining the module’s location in the I/O chassis, connect the
wiring arm to the pivot bar at the module’s location.
Use the plastic keying bands, shipped with each I/O chassis, for keying I/O
slots to accept only one type of module.
The module is slotted in two places on the edge of the rear circuit board.
The position of the keying bands on the backplane connector must
correspond to these slots to allow insertion of the module. You can key
any connector in an I/O chassis to receive this module except for the
leftmost connector reserved for adapter or processor modules. Place
keying bands between the following numbers labeled on the backplane
connector (Figure 2.1):
between 10 and 12
between 24 and 26
Power Requirements
Module Location in the I/O
Chassis
Module Keying