User Manual

Rockwell Automation Publication 1756-UM540A-EN-P - May 2014 45
Chapter 3
1756-IF8I Isolated Analog Input Module
The 1756-IF8I module has eight isolated channels. Each channel supports
connection to the following input types:
• Current
• Vo l t a g e
The module provides 24-bit resolution and uses differential inputs. Differential
input have a greater resistance to the effects of electromagnetic noise and provide
improved flexibility with respect to cable length when wiring your module.
Additional features are described in this chapter.
1756-IF8I Module Features
The 1756-IF8I module has the following features:
• Internal Loop Power Source
• Multiple Input Ranges
• Notch Filter
• Underrange/Overrange Detection
• Digital Filter
• Process Alarms
• Rate Alarm
• Sensor Offset
• Wire Off Detection
• Synchronized Sampling
Topic Page
1756-IF8I Module Features 45
Module Block and Circuit Diagrams 58
Wire the 1756-IF8I Module 61
Fault and Status Reporting 64
IMPORTANT
Most of the features available on the 1756-IF8I module are software
configurable. For more information on how to configure the module, see
Chapter 7
, Configure ControlLogix Isolated Analog I/O Modules on page 121