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Allen-Bradley Manuals
I/O Systems
1746-NO4I
User manual
Allen-Bradley 1746-NO4I User Manual
4-channel analog i/o modules
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Preface
Who Should Use this Manual
Purpose of this Manual
Related Documentation
Common Techniques Used in this Manual
Your Questions or Comments on this Manual
Overview
How to Use Analog
Types of Analog Modules
1746-NI4 Analog Input Module
1746-NIO4I and NIO4V Analog Combination Modules
1746-NO4I and NO4V Analog Output Modules
Quick Start for Experienced Users
Required Tools and Equipment
Procedures
Installing and Wiring Your Analog Module
European Union Directive Compliance
EMC Directives
Determining Your Power Requirements for a Modular Controller
Determining Your Power Requirements for a Fixed Controller
Configuring Your Module
Switch Settings for the 1746-NI4
Switch Settings for the 1746-NIO4I and -NIO4V
External Power Switch for the 1746-NO4I and -NO4V
Choosing a Slot in the Chassis
Installing Your Module
Removing the Analog Module Terminal Block
Wiring Considerations
System Wiring Guidelines
Grounding Your Cable
Determining the Cable Length
Wiring the Analog Module
Labeling and Installing the Terminal Block
Grounding the Foil Shields and Drain Wires
Wiring Schematics for 2, 3, and 4-Wire Analog Input Devices
Wiring Schematic for Single-Ended Analog Input Connections
Minimizing Electrical Noise on Analog Modules
Interface between the Module and the Processor
Entering Module ID Codes
Addressing Analog Modules
Bit Level Addressing
Processor Update of Analog Data
Monitoring the Input and Output Data
Converting Analog Input Data
Converting Analog Output Data
System Considerations
Safe State for Outputs
Retentive Programming Option
Retentive Analog Output Example
Non-Retentive Analog Output Example
During a Mode Change or Power Cycle
Input Out-Of-Range Detection
Response to Slot Disable
Input Response to Slot Disable
Output Response to Slot Disable
Input Channel Filtering
Testing the SLC 500 System
Start-Up Procedures
Inspect the Analog Module
Disconnect Prime Movers (Motion Devices)
Power up the SLC 500 System
Testing Analog Inputs
Testing Analog Outputs
Addressing, Out-Of-Range Detection, and Scaling of Analog
Inputs
Calculating the Linear Relationship
Calculating the Out-Of-Range Flag Using the Scale Instruction
Using Standard Math
Using the Scale (SCL) Instruction
Using Scale with Parameters (SCP) Instruction
Addressing and Scaling Outputs
Calculating the Linear Relationship
Using Standard Math
Using the Scale with Parameters (SCP) Instruction
Scaling Offset When > 32,767 or < -32,768
Calculating the Linear Relationship
Calculating the Shifted Linear Relationship
Using Standard Math
Using the Scale with Parameters (SCP) Instruction
Scaling and Range Checking and Analog Inputs and Outputs
Calculating the Linear Relationship
Using Standard Math Instructions
Scaling and Range Checking of Analog Inputs and Outputs
Using SCL Instruction
Using the Scale with Parameters (SCP) Instruction
Preventative Maintenance
Safety Considerations When Troubleshooting
Analog Modules Specification
General Specifications for NI4, NIO4I, NIO4V, NO4I, and NO4V
Nio4V
Current-Loop Input Specifications for NI4, NIO4I, and NIO4V
Voltage Input Specifications for NI4, NIO4I, and NIO4V
Current Output Specifications for NIO4I and NO4I
Voltage Output Specifications for NIO4V and NO4V
Positive Decimal Values
Negative Decimal Values
Calibrating an Analog Input Channel
Calculating the Software Calibration
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SLC™ 500
4-Channel Analog
I/O Modules
(Catalog Numbers 1746-NI4,
1746-NIO4I, 1746-NIO4V,
1746-NO4I, and 1746-NO4V)
User Manual
Table of
Contents
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Summarization of Contents
Preface
Who Should Use this Manual
Identifies the target audience responsible for SLC 500 analog I/O systems.
Purpose of this Manual
Outlines the manual's scope: installation, wiring, and troubleshooting.
Related Documentation
Document References
Lists other documents for additional information on Rockwell Automation products.
Manual Conventions
Common Techniques Used
Explains conventions used throughout the manual for clarity.
Feedback and Support
Provides contact information for manual feedback and support.
Chapter 1 Overview
How to Use Analog
Explains analog representation and a typical application example.
Types of Analog Modules
Provides an overview of the different analog modules available.
Chapter 2 Quick Start for Experienced Users
Required Tools and Equipment
Lists necessary tools and equipment for quick installation.
Quick Start Procedures
Outlines the step-by-step procedures for quick start.
Chapter 3 Installing and Wiring Your Analog Module
Regulatory Compliance
Specifies regulations applicable within the EU or EEA regions and EMC standards.
Power Requirements
Guides on calculating power requirements for modular and fixed controllers.
Module Configuration
Explains setting up analog input channels using DIP switches.
External Power Switch
Describes the external power switch for output modules.
Installation Procedures
Covers slot selection, physical installation, and terminal block handling.
Wiring Considerations
Details system wiring guidelines, grounding, and cable length.
Wiring Procedures and Schematics
Step-by-step wiring, terminal block handling, and noise reduction techniques.
Chapter 4 Module Operation and System Considerations
Module-Processor Interface
Describes module setup, ID codes, and interface with the SLC 500 system.
Addressing Analog Modules
Details how analog modules and their channels are addressed in the I/O image table.
Bit Level Addressing
Illustrates bit maps for analog inputs and outputs for detailed addressing.
Data Processing and Monitoring
Explains processor data updates, monitoring, and signal conversion methods.
System Considerations
Covers safe states, retentive programming, out-of-range detection, slot disable, and filtering.
Chapter 5 Testing Your Module
System and Module Testing
Guides on testing the SLC 500 system and analog module start-up procedures.
Analog Input Testing
Detailed procedure for testing the analog module input channels.
Analog Output Testing
Detailed procedure for testing the analog module output channels.
Chapter 6 Programming Examples
Analog Input Programming Examples
Examples for addressing, range checking, and scaling analog inputs using various methods.
Analog Output Programming Examples
Examples for addressing, scaling, and handling offsets for analog outputs.
Scaling and Range Checking Examples
Demonstrates scaling and range checking for both analog inputs and outputs.
Chapter 7 Maintenance and Safety
Preventative Maintenance
Information on maintaining analog modules and SLC 500 systems.
Safety Considerations
Highlights safety precautions for troubleshooting system issues.
Appendix A Specifications
General Specifications
Lists general technical specifications for the analog modules.
Input Specifications
Details current and voltage input specifications for the analog modules.
Output Specifications
Details current and voltage output specifications for the analog modules.
Appendix B Two’s Complement Binary Numbers
Positive Decimal Values
Explains how positive numbers are represented in two's complement binary format.
Negative Decimal Values
Explains how negative numbers are represented in two's complement binary format.
Appendix C Optional Analog Input Software Calibration
Software Calibration Procedure
Steps, equations, and examples for calibrating analog input channels via software.
Appendix D Module Input and Output Circuits
Input Circuit Schematics
Shows internal input circuit schematics for NI4, NIO4I, and NIO4V modules.
Output Circuit Schematics
Shows internal voltage and current output circuit schematics for relevant modules.
Rockwell Automation Support
Installation Assistance
Offers initial support for hardware module installation issues.
Product Return Process
Outlines the process for returning non-functioning products for satisfaction.
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