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Rockwell Automation 1771-IFE , D17716.5.90 USER MNL. ANALOG INPUT Module User Manual

Page 18

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Installing the Input Module

Chapter 2

2-6

Figure 2.4

Connection Diagram for 8 Differential Inputs and TwoĆWire Transmitters

+

Source Ground

1. Unused channels must have their + and Ć inputs jumpered

together and tied to module common to reduce noise.

1771ĆWG

Field Wiring Arm

10949ĆI

Attention: Analog input signals must be within +14.25V

referenced to module common. If an input channel exceeds this

range, channelĆtoĆchannel crosstalk can cause invalid input

readings and invalid underrange or overrange bits.

NOTE:

The 1771ĆIFE module does not supply loop power for the input

device. The user must supply loop power for loopĆpowered

input devices.

+

2ĆWire

Transmitter

Channel 1+
Channel 1Ć
Channel 2+
Channel 2Ć

Channel 3+
Channel 3Ć
Channel 4+
Channel 4Ć

Channel 5+
Channel 5Ć
Channel 6+
Channel 6Ć

Channel 7+
Channel 7Ć
Channel 8+
Channel 8Ć
Module Common

Not used

Not used

Not used

Module Common

1
2
3
4
5

6
7
8
9
10
11
12
13
14
15
16
17
18

19
20
21

Configuring the module for differential inputs does not provide isolation.