Allen-Bradley 1756-OF8I User Manual

High Resolution Analog I/O Modules
Catalog Numbers 1756-IF8I, 1756-IRT8I, 1756-OF8I, 1756-IR12, 1756-IT16
User Manual
Original Instructions

Allen-Bradley 1756-OF8I Specifications

General

Brand	Allen-Bradley
Model	1756-OF8I
Category	I/O Systems
Language	English

Summary

Chapter 1 Analog I/O Module Operation in the ControlLogix System

Before You Begin

Tasks to complete before installing and using the analog I/O module.

Configure a Module

Describes using the Logix Designer application to configure analog I/O modules.

Input Module Operation

Details how analog input modules broadcast data to the backplane.

Output Module Operation

Explains how the RPI defines controller data transfer to output modules.

Chapter 2 Analog I/O Module Features

Calibration

Fault and Status Reporting

Chapter 3 1756-IF8I Isolated Analog Input Module

1756-IF8I Module Features

Lists key features of the 1756-IF8I module, including internal loop power and filters.

Process Alarms

Alerts when the 1756-IF8I module exceeds configured high or low limits for each channel.

Chapter 4 Temperature-sensing Analog Modules

Cold Junction Compensation

Accounts for thermoelectric effects at thermocouple junctions for accurate temperature measurement.

Chapter 5 1756-OF8I Isolated Analog Output Module

1756-OF8I Module Features

Lists key features of the 1756-OF8I output module, including output ranges and ramping.

Redundant Owners

Enables single controller or multiple controllers to coordinate output control.

Chapter 6 Install ControlLogix Analog I/O Modules

Install the I/O Module

Details installing or removing modules while chassis power is applied (RIUP).

Connect Wiring

Describes wiring the module using an RTB or a pre-wired Analog Interface Module (AIFM).

Install the Removable Terminal Block

Provides steps for installing the RTB onto the module to connect wiring.

Chapter 7 Configure ControlLogix Analog I/O Modules

Create a New Module

Edit the Configuration

Chapter 8 Calibrate the ControlLogix Analog I/O Modules

Calibrate the Input Modules

Calibrate the Temperature-sensing Modules

Calibrate the 1756-OF8I Module for a Current Output Type

Chapter 9 Troubleshoot Your Module

Status Indicators for the 1756-IF8I Module

Use Logix Designer Application for Troubleshooting

Troubleshoot Incorrect Readings on the Module