Rockwell Automation 1771-IFE , D17716.5.90 USER MNL. ANALOG INPUT Module - Manual (Page 19)

Installing the Input Module
Chapter 2
2-7
Figure 2.5
Connection Diagram for 8 Differential Inputs and FourĆWire Transmitters
+
–
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
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
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
10949-I
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.
+
–
4ĆWire
Transmitter
+
–
Configuring the module for differential inputs does not provide isolation.