Wiring differential inputs – Rockwell Automation 1769-IF8 Compact 1769-IF8 Analog Input Module User Manual
Page 9

Compact I/O 1769-IF8 Analog Input Module 9
Publication 1769-IN067B-EN-P - September 2005
• The 1769-IF8 module does not provide loop power for analog inputs. Use a
power supply that matches the input transmitter specifications.
• Differential analog inputs are more immune to noise than single-ended
analog inputs.
• Voltages on Vin+, V/Iin-, and Iin+ of the 1769-IF8 module must be within
±10V dc of analog common.
Wiring Differential Inputs
ATTENTION
Be careful when stripping wires. Wire fragments that fall into a
module could cause damage at power up. Once wiring is
complete, ensure the module is free of all metal fragments.
+
–
V in 4+
V/I in 4-
I in 4+
ANLG Com
V in 5+
V/I in 5-
I in 5+
ANLG Com
V in 6+
V/I in 6-
I in 6+
ANLG Com
V in 7+
V/I in 7-
I in 7+
ANLG Com
NC
NC
+
–
V in 0+
V/I in 0-
I in 0+
ANLG Com
V in 1+
V/I in 1-
I in 1+
ANLG Com
V in 2+
V/I in 2-
I in 2+
ANLG Com
V in 3+
V/I in 3-
I in 3+
ANLG Com
NC
NC
earth ground the
shield locally at
the module
analog source
Belden 8761 cable (or equivalent)