Rockwell Automation 1771-IR , D17716.5.76 RTD INPUT MODULE - Manual (Page 13)

Installing the RTD Input Module
Chapter 3
3Ć2
Your module receives its power through the 1771 I/O chassis backplane from
the chassis power supply. The maximum drawn by the RTD module from this
supply is 850mA (4.2 Watts).
Add the listed value 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 slot of the I/O chassis except for the extreme left slot.
This slot is reserved for 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 the I/O
slot to accept only this type of module.
The input module is slotted in two places on the rear edge of the 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 3.1):
Between 10 and 12
Between 28 and 30
You can change the position of these bands if subsequent system design and
rewiring makes insertion of a different type of module necessary. Use
needlenose pliers to insert or remove keying bands.
Power Requirements
Module Location in the
I/O Chassis
Module Keying