Rockwell Automation 1771-IFF/A INSTL.INSTR FAST ANALOG INPUT - Manual (Page 6)

Publication 1771-IN046B-EN-P - December 2003
6 Fast Analog Input Module
Calculate Power
Requirements The module receives its power through the 1771 I/O power supply and
requires 500mA 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.
Determine Module
Placement in the I/O
Chassis Place your module in any slot of the 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 digital
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.
The 1771-IFF is a modular component of the 1771 I/O system requiring a
properly installed system chassis. Refer to publication 1771-IN075 for detailed
information on acceptable chassis, proper installation and grounding
requirements. Limit the maximum adjacent slot power dissipation to 10W
or less.
ATTENTION
Do not insert or remove modules from the I/O chassis
while system power is ON. Failure to observe this rule
could result in damage to the module circuitry.