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

Page 9

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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)