Rockwell Automation 1771-IFF/A INSTL.INSTR FAST ANALOG INPUT - Manual (Page 11)

Publication 1771-IN046B-EN-P - December 2003
Fast Analog Input Module 11
– Jumper all unused channels to module
common to reduce noise.
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
Channel 9
Channel 10
Channel 1 1
Channel 12
Channel 13
Channel 14
Channel 15
Channel 16
Module Common
Module Common
Module Common
Module Common
Module Common
1771-WG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
The 1771-IFF module does not supply loop power for the input
device. The user must supply loop power for loop-powered input devices.
+
–
The sensor cable must be shielded. The shield must:
extend the length of the cable, but be connected only at the 1771 I/O chassis
extend up to the point of termination
Important: The shield should extend to the termination point, exposing just enough
cable to adequately terminate the inner conductors. Use heat shrink or
another suitable insulation where the wire exits the cable jacket.
Power
Supply
+
_
– Tie power supply grounds together
to minimize ground loops.
Note: Refer to transmitter manufacturers
specifications for power supply connections.
2-Wire
Transmitter
Power
Supply
Note:
– All module commons are electrically
tied together inside the module.
2-Wire
Transmitter
– Jumper all unused channels to module
common to reduce noise.
Functional Ground
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
Channel 9
Channel 10
Channel 1 1
Channel 12
Channel 13
Channel 14
Channel 15
Channel 16
Module Common
Module Common
Module Common
Module Common
Module Common
1771-WG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
The 1771-IFF module does not supply loop power for the input
device. The user must supply loop power for loop-powered input devices.
+
–
The sensor cable must be shielded. The shield must:
extend the length of the cable, but be connected only at the 1771 I/O chassis
extend up to the point of termination
Important: The shield should extend to the termination point, exposing just enough
cable to adequately terminate the inner conductors. Use heat shrink or
another suitable insulation where the wire exits the cable jacket.
+
_
– Tie power supply grounds together
to minimize ground loops.
Note: Refer to transmitter manufacturers
specifications for power supply connections.
Note:
– All module commons are electrically
tied together inside the module.
Power
Supply 4-Wire
Transmitter
Power
Supply
4-Wire
Transmitter
Connection Diagram for 16 Single-ended Inputs and Two-Wire Transmitters
Connection Diagram for 16 Single-ended Inputs and Four-Wire Transmitters
Field Wiring Arm
Field Wiring Arm
Functional Ground
single-ended wiring