1756 Analog User Detail

UserManual

ControlLogixAnalog I/OModules

(Cat. No. 1756-Series)

Allen-Bradley

product icon

uses of

le

r ents ny e

ct his

out

y

ct.

,

Important User Information Solid state equipment has operational characteristics differing from those of electromechanical equipment. “Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls”(Publication SGI-1.1) describes some important differences between solid state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of for solid state equipment, all persons responsible for applying thisequipment must satisfy themselves that each intended applicationthis equipment is acceptable.

In no event will the Allen-Bradley Company be responsible or liabfor indirect or consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely foillustrative purposes. Because of the many variables and requiremassociated with any particular installation, the Allen-Bradley Compacannot assume responsibility or liability for actual use based on thexamples and diagrams.

No patent liability is assumed by Allen-Bradley Company with respeto use of information, circuits, equipment, or software described in tmanual.

Reproduction of the contents of this manual, in whole or in part, withwritten permission of the Allen-Bradley Company is prohibited.

Throughout this manual we use notes to make you aware of safetconsiderations.

Attentions help you:

• identify a hazard• avoid the hazard

• recognize the consequences

Important: Identifies information that is especially important for successful application and understanding of the produ

ControlLogix is a trademark of the Allen-Bradley Company, Inc.

!ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or deathproperty damage, or economic loss.

Preface P-1

About this User Manual

What this Preface Contains

This preface describes how to use this manual. The following table describes what this preface contains and its location.

Who Should Use This Manual

You must be able to program and operate an Allen-Bradley programmable controller (PLC) to make efficient use of your analog I/O modules.

We assume that you know how to do this in this manual. If you do not, refer to the appropriate PLC programming and operations manual before you attempt to program this module.

Purpose of Manual This manual describes how to use your ControlLogix™ analog I/O module. It helps you install, program, configure, calibrate and troubleshoot your module.

(INSERT ART)

For information about See pageWho should use this manual P-1

Purpose of this manual P-1

Conventions and related terms P-2

Related products and documentation P-4

Rockwell Automation support P-4

Preliminary Publication 1756-6.5.9 - March 1998

P-2 About this User Manual

Conventions and Related Terms

This manual uses the following conventions:

This icon: Call attention to:

helpful, time-saving information

an example

additional information in the publication referenced


About this User Manual P-3

Terms

This term: Means:

BOOTPlow level protocol that provides communications to other nodes on a TCP/IP network


P-4 About this User Manual

Related Products and Documentation

The following table lists related ControlLogix products and documentation:

If you need more information on these products, contact your local Allen-Bradley integrator or sales office for assistance. For more information on the documentation, refer to the Allen-Bradley Publication Index, publication SD499.

Rockwell Automation Support Rockwell Automation offers support services worldwide, with over 75 sales/support offices, 512 authorized distributors and 260 authorized systems integrators located throughout the United States alone, plus Rockwell Automation representatives in every major country in the world.

Local Product Support

Contact your local Rockwell Automation representative for:

• sales and order support

• product technical training

• warranty support• support service agreements

Technical Product Assistance

If you need to contact Rockwell Automation for technical assistance, please review the troubleshooting information in Appendix A first. If problem persists, then call your local Rockwell Automation representative.

Your Questions or Comments on this Manual

If you find a problem with this manual, please notify us of it on the enclosed Publication Problem Report.

Cat. number: Document title: Pub. number:

1756-PA72, -PB72

ControlLogix Power Supply Installation Instructions 1756-5.1

1756-A4, -A7, -A10, -A13

ControlLogix Chassis Installation Instructions 1756-5.2

1756-xxxx ControlLogix Gateway System Overview 1756-x.x


Table of Contents

What is ControlLogix Analog I/O?

Chapter 1What this Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Compliance to

European Union Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Low Voltage Directive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Preventing Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . 1-2Removing and Inserting Under Power . . . . . . . . . . . . . . . . . . . . . 1-2Using an I/O Module in the ControlLogix System . . . . . . . . . . . . . 1-3

Types of Analog ControlLogix I/O . . . . . . . . . . . . . . . . . . . . 1-3Major Features of the ControlLogix Analog I/O Modules . . . . . 1-4

Using Features of Control- Logix Analog I/O Modules. . . . . . . . . . 1-5Data Types and Connection Points . . . . . . . . . . . . . . . . . . . . . 1-5Scaling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5Sampling, Receiving and Producing Rela-Time Data. . . . . . . . 1-6

Inputs: Sampling and Producing Data . . . . . . . . . . . . . . . . 1-6Outputs: Receiving and Producing Data . . . . . . . . . . . . . . 1-6

Using Features Specific to Input Modules . . . . . . . . . . . . . . . . . . 1-7Process Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7Sensor Type and Temperature . . . . . . . . . . . . . . . . . . . . . . . . 1-7

RTD Linearization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7Thermocouple Linearization . . . . . . . . . . . . . . . . . . . . . . . 1-8

Using Features Specific to Output Modules . . . . . . . . . . . . . . . . . 1-8Ramping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8Clamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8Hold for Initialization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9Fault and Idle Behavior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . . . . . . 1-9

Installing the ControlLogix I/O Module

Chapter 2What this Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1Installing the ControlLogix I/O Module . . . . . . . . . . . . . . . . . . . . . 2-1Keying the Removable Terminal Block and the Interface Module . 2-2Connecting Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Connect grounded end of the cable . . . . . . . . . . . . . . . . . . 2-3Connect ungrounded end of the cable . . . . . . . . . . . . . . . . 2-3Three Types of RTBs (each RTB comes with housing) . . . . 2-4

Assembling the Removable Terminal Block and the Housing . . . . 2-5Installing the Removable Terminal Block or Interface Module onto the Module

2-6Checking the Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

LED indicators for input modules. . . . . . . . . . . . . . . . . . . . 2-7LED indicators for output modules. . . . . . . . . . . . . . . . . . . 2-7

Publication 1756-6.5.9 - March 1998

ii Table of Contents – ControlLogix Analog I/O Modules User Manual

Removing the Removable Terminal Block from the Module . . . . . 2-8Removing the Module from the Chassis. . . . . . . . . . . . . . . . . . . . 2-8

1756-IF6I Wiring examples. . . . . . . . . . . . . . . . . . . . . . . . . . 2-9Voltage input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9Current input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

1756-IR6I Wiring examples . . . . . . . . . . . . . . . . . . . . . . . . 2-10Three-wire RTD device . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10Four-wire RTD device . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

1756-IT6I Wiring examples. . . . . . . . . . . . . . . . . . . . . . . . . 2-11Connect the Cold Junction Sensor . . . . . . . . . . . . . . . . . . 2-11

1756-IF8 Wiring examples . . . . . . . . . . . . . . . . . . . . . . . . . 2-12Differential current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12Differential voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12Single-ended current. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12Single-ended voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

1756-IF16 Wiring examples . . . . . . . . . . . . . . . . . . . . . . . . 2-13Differential current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13Differential voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13Single-ended current. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13Single-ended voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

1756-OF6CI Wiring examples . . . . . . . . . . . . . . . . . . . . . . . 2-14Current output with output loads of 0-550 ohms . . . . . . . 2-14Current output with output loads of 551-1000 ohms . . . . 2-14

1756-OF6VI Wiring example . . . . . . . . . . . . . . . . . . . . . . . . 2-151756-OF4 Wiring examples . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

1756-OF8 Wiring examples . . . . . . . . . . . . . . . . . . . . . . . . 2-17Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . . . . . 2-18

Configuring the ControlLogix Analog I/O Module

Chapter 3What this Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Configuring the Input Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Configuring the Thermocouple Module . . . . . . . . . . . . . . . . . . . . 3-1

Interface Module (IFM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Cold Junction (CJ) Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Cold Junction (CJ) Offset . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Temperature Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Real Time Sampling (RTS) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2Target to Originator Real Packet Interval (TtoO RPI). . . . . . . . . 3-2Producer Connection Point (CP) . . . . . . . . . . . . . . . . . . . . . . . 3-3

Preliminary Publication1756-6.5.9 - March 1998

Table of Contents – ControlLogix Analog I/O Modules User Manual iii

Configuring Thermocouple Input Channels . . . . . . . . . . . . . . . . . 3-4Alarm Disable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Process Alarm Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4Rate Alarm Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5Input Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5Sensor Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5Notch Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5Digital Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6Rate Alarm Trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6Low Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Configuring the RTD Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6Temperature Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6Real Time Sampling (RTS) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6Target to Originator Real Packet Interval (TtoO RPI) . . . . . . . . 3-7Producer Connection Point (CP) . . . . . . . . . . . . . . . . . . . . . . . 3-7

Configuring the Voltage/Current Input Modules . . . . . . . . . . . . . . 3-7Real Time Sampling (RTS) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8Target to Originator Real Packet Interval (TtoO RPI) . . . . . . . . 3-8Producer Connection Point (CP) . . . . . . . . . . . . . . . . . . . . . . . 3-9

Configuring the Output Module . . . . . . . . . . . . . . . . . . . . . . . . . 3-10Configuring Voltage/ Current Output Modules . . . . . . . . . . . . . . 3-10

Idle to Fault Transition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10Target to Originator Real Packet Interval (TtoO RPI) . . . . . . . 3-10Producer Connection Point (CP) . . . . . . . . . . . . . . . . . . . . . . 3-11

Calibrating the ControlLogix Analog I/O Module

Chapter 4What this Chapter Contains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Calibrating Input Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Calibrate Inputs Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2Input Calibration Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3Calibrating Channels in Multiple Ranges. . . . . . . . . . . . . . . . . 4-3Accept Input Low Calibration Service . . . . . . . . . . . . . . . . . . . 4-4Accept Input High Calibration Service . . . . . . . . . . . . . . . . . . . 4-5Abort Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Calibrating Output Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7Calibrate Outputs Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8Generate Output Low Reference Calibration Service . . . . . . . . 4-9Generate Output High Reference Calibration Service. . . . . . . 4-10Calibration Output Finish Service . . . . . . . . . . . . . . . . . . . . . 4-11Abort Calibration Service . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Unlatching Status Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13Using Device Object Services . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14Set Attributes All Indirect. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15


iv Table of Contents – ControlLogix Analog I/O Modules User Manual

Get Attributes All Indirect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . . . . . 4-16

Troubleshooting Chapter 5Chapter Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Using Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

LED indicators for input modules. . . . . . . . . . . . . . . . . . . . 5-1LED indicators for output modules. . . . . . . . . . . . . . . . . . . 5-2

Chapter Summary and What’s Next . . . . . . . . . . . . . . . . . . . . . . . 5-2

Specifications Appendix A1756-IF6I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-21756-IF8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-31756-IF16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-41756-IR6I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-51756-IT6I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-61756-OF6CI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-71756-OF6VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-81756-OF4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-91756-OF8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-10

Preliminary Publication1756-6.5.9 - March 1998

Chapter 1What is ControlLogix Analog I/O?

What this Chapter Contains

This chapter describes the ControlLogix analog modules and what you must know and do before you begin to use them. The following table describes what this chapter contains and its location.

Compliance toEuropean Union Directives

If this product bears the CE marking, it is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives.

EMC Directive

This product is tested to meet Council Directive 89/336/EEC Electromagnetic Compatibility (EMC) and the following standards, in whole or in part, documented in a technical construction file:

• EN 50081-2EMC - Generic Emission Standard, Part 2 - Industrial Environment

• EN 50082-2EMC - Generic Immunity Standard, Part 2 - Industrial Environment

This product is intended for use in an industrial environment.

Low Voltage Directive

This product is tested to meet Council Directive 73/23/EEC Low Voltage, by applying the safety requirements of EN 61131-2 Programmable Controllers, Part 2 - Equipment Requirements and Tests.

For specific information required by EN 61131-2, see the appropriate sections in this publication, as well as the following Allen-Bradley publications:

• Industrial Automation Wiring and Grounding Guidelines For Noise Immunity, publication 1770-4.1

• Guidelines for Handling Lithium Batteries, publication AG-5.4• Automation Systems Catalog, publication B111

For information about See page

Compliance to European Union Directives 1-1

Preventing electrostatic discharge 1-2

Removal and insertion under power 1-2

Using an I/O Module in theControlLogix System

1-3

Using Features of ControlLogixAnalog I/O Modules

1-5

Using Features Specific to Input Modules 1-7

Using Features Specific to Output Modules 1-8

Chapter Summary and What’s Next 1-9


1-2 What is ControlLogix Analog I/O?

t.

n

Preventing Electrostatic Discharge

ControlLogix analog modules are sensitive to electrostatic discharge.

Removing and Inserting Under Power

This module is designed to be installed or removed while chassis power is applied.

!ATTENTION: Electrostatic discharge can damage integrated circuits or semiconductors if you touch backplane connector pins. Follow these guidelines when you handle the module:

• Touch a grounded object to discharge static potential• Wear an approved wrist-strap grounding device• Do not touch the backplane connector or

connector pins• Do not touch circuit components inside the module• If available, use a static-safe work station• When not in use, keep the module in its

static-shield bag

!ATTENTION: When you insert or remove a module while backplane power is on, an electrical arc may occur. An electrical arc can cause personal injury or property damage by:

• sending an erroneous signal to your system’s fielddevices causing unintended machine motion or loss of process control.

• causing an explosion in a hazardous environmenRepeated electrical arcing causes excessive wear to contacts on both the module and its mating connector.Worn contacts may create electrical resistance that caaffect module operation.


What is ControlLogix Analog I/O? 1-3

Using an I/O Module in the ControlLogix System

ControlLogix analog I/O modules translate analog signals to, or from, the digital domain allowing for industrial control systems to operate on analog inputs or outputs to perform control applications.

Practically speaking, an analog I/O module translates an analog signal level into, or from, a corresponding discrete representation which controllers can easily operate on for control purposes.

A ControlLogix I/O module mounts in a ControlLogix chassis and uses a Removable Terminal Block (RTB) or Interface Module (IFM) to connect all field-side wiring.

Before you install and use your module you should have already:

• installed and grounded a 1756 chassis and power supply.To install these products, refer to publications 1756-5.1and 1756-5.2.

• ordered and received an RTB or IFM and its components for your application.

Types of Analog ControlLogix I/O

ControlLogix analog modules are compatible with ___ programmable controllers, and the SLC® 5/02 modular controllers. Refer to the table below for information on using ControlLogix I/O with various Allen-Bradley programmable controllers.

Catalog Number Description1756-IF6I isolated analog voltage/current input module

1756-IR6I RTD input module

1756-IT6I Thermocouple input module

1756-IF8 input module

1756-IF16 input module

1756-OF6CI current loop output module

1756-OF6VI analog (10V) output module

1756-OF4 output module

1756-OF8 output module



Major Features of the ControlLogix Analog I/O Modules

(INSERT ART)

Connectors pins - Input/output, power and grounding connections are made to the module through these pins by a Removable Terminal Block (RTB), see page X, or an Interface Module (IFM), see page X.

Status indicators - Indicators display the status of communication and input/output. Use these indicators to help in troubleshooting.

Top and bottom guides - Guides provide assistance in seating the RTB or IFM onto the module.

Locking tab - The locking tab anchors the RTB or IFM on the module, maintaining wiring connections.

Backplane controlbus - This backplane connector interface for the ControlLogix system connects the module to the chassis.



Using Features of Control- Logix Analog I/O Modules

The following features are available on both input and outputanalog modules.

Data Types and Connection Points

There are two data types: floating point or integer. Floating point mode unlocks all the module features, and integer mode allows for faster sampling rates and uses less memory in the data table.

The following three forward open service parameters must be in agreement as to the selected data type. Data types may not be mixed amongst the three.

• Configuration instance - This assembly instance selects a configuration to apply, either Default, Listen Only, Float, or Raw.

• Consumer connection point - This parameter selects the type of connection to be established from the Originator, the controller, to the Target, the analog module.

For inputs modules, the connection is Heartbeat, either Listen Only or Controlling. For outputs modules, in addition to the Heartbeat connections, you may also choose Float Ouptutor Raw Output.

• Producer connection point - This parameter defines data from the Target, the analog module, to the Originator, the controller.

Isolated analog modules have eight choices available, either Float, CST Float, CJ Float, CJ CST Float, Raw, CST Raw, CJ Raw, or CJ CST Raw. The CJ option is only used with thermocouple modules.

High Volume have four choices available, either Float, CST Float, Raw, or CST Raw.

Scaling

The ControlLogix analog module scales analog values in different terms depending on the data types being used to interface with the module. You must choose one of the following types of scaling:

• Floating point scaling - This operation requires the user to configure all four scaling points, LowSignal, HighSignal, LowEngineering, and HighEngineering.

• Raw scaling - This operation is always fixed and allows no user configurability. Raw scaling translates the lowest signal value that a channel may reach under its current configuration into 32,768 counts and scales the highest signal value into32, 767 counts.



s

ing ing

nts

ed

h

f ach

at y,

Sampling, Receiving and Producing Rela-Time Data

These processes are the keys to theControlLogix analog module’communications inerface with the control system.

Sampling data indicates the reading of inputs, or for analogs, readthe Analog-to-Digital Converters. Receiving data indicates recoverdata from the backplane intended for the module. Producing dataindicates sending data out on the backplane to Originators interested in receiving the data.

Inputs: Sampling and Producing Data

ControlLogix analog modules sample data at user defined incremeknown as the RealTimeSample (RTS) period. At minimum, the modules produce data onto the backplane at the connection defin“Target to Originator (TtoO) Actual Packet Interval (API).

By configuring the RTS and production rate (TtoO API), you can obtain the following variety of sampling and data combinations:

• RTS = TtoO API - This typical combination yields every sampleproduced on the backplane and received in the controller, barring communication problems.

• RTS < TtoO API - This combination allows for reduced bandwidtusage but recent data.

• RTS > TtoO API - This combination allows redundant sending osamples and increases the probability of the controller seeing esample.

Outputs: Receiving and Producing Data

ControlLogix analog output modules expect to receive output datathe Originator to Target Actual Packet Interval (OtoT API). In realitthis data is received far more often. New outputs update the analog output signal.

Note: A new output is considered to be an output level different than what the module is currently outputting.



Using Features Specific to Input Modules

The following features are available only with analog input modules. Most features are only available in floating point mode.

Process Alarms

Process alarms are set at four user configurable alarm trigger points:

• LowAlarmTrigger• LowLowAlarmTrigger

• HighAlarmTrigger• HighHighAlarmTrigger

Each process alarm can be monitored in ladder logic forabnormal behavior. How should we show this? Here or somewhere with a set of other ladder logic as well?

You may configure an Alarm Deadband to work with these process alarms. The deadband allows the process alarm status bit to remain set, despite the alarm condition disappearing, as long as the input data remains within the deadband and the process alarm.

Sensor Type and Temperature

Two analog modules, the RTD (1756-IR6I) and Thermocouple (1756-IT6I), allow you to configure a Sensor Type that causes the analog signal to be linearized into a temperature value.

RTD Linearization

RTDs measure the resistance of the input and translate the Ohms signal into a temperature value. ControlLogix analog modules offer 14 specific sensor types. Use the following table to check the sensor types and Ohms signals that correspond with each.

RTD linearization is only available in floating point mode.

Sensor Type Ohms range

Platinum 385 100, 200, 500, and 1000ΩPlatinum 3916 100, 200, 500, and 1000ΩCopper 427 10ΩNickel 618 100, 120, 200, and 500ΩNickel 672 120Ω



Thermocouple Linearization

Thermocouple modules measure a millivolt input signal and linearize it into a temperature value; the value is expressed in oC or oF based on the selected module Temperature Mode.

Note: The junction of field wires with the terminations of an RTB generates a small voltage. This thermoelectric effect alters the input signal. To accurately measure the input signal, you must use a cold junction sensor (CJS) to account for the increased voltage. See Chapter 2 for information about how to mount a CJS to your module.

If you use an IFM to connect wiring to your thermocouple module, you do not need to attach the CJS. The IFM compensates an additional voltage.

Using Features Specific to Output Modules

The following features are available only with analog output modules. Most features are only available in floating point mode.

Ramping

Ramping limits the speed at which an analog output signal can change. This prevents fast transitions in output from damaging the devices that an output controls.

Ramping is possible in the following situations:

• Run mode ramping - This ramping occurs during the normal run mode and begins operation between the current output level and any new output value received.

• Ramp to idle mode - This ramping occurs when the current output value changes to the Idle Value after an Idle Command is received from the controller.

• Ramp to fault mode - This ramping occurs when the current output value changes to the Fault Value after a fault occurs.

Clamping

Clamping allows you to select the maximum range limits an output should ever reach in the control process. This is a safety feature.



Hold for Initialization

Hold for Initialization causes outputs to hold current state until the consumed output matches the output echo within 0.1% of full scale. Outputs will hold if any of the three conditions occur:

• Initial conection is established after power-up

• A new connection is established after a fault occurs• There is a transition to Run mode from Idle state

Fault and Idle Behavior

If you lose direct control of the outputs through a fault or the controller switching to idle mode, the outputs will transition to a safe state. Each output can be configured to hold last state or go to a specific value designated by the Fault State or Idle State bits.

Chapter Summary and What’s Next

In this chapter you learned about:

• using an I/O module in the ControlLogix system

• using features of analog I/O modules• using features specific to input or output modules

Move on to Chapter 2 to learn how to install and wire your module.


Chapter 2Installing the ControlLogix I/O Module


This chapter describes how to install ControlLogix modules, key the RTB or IFM, connect the input and output wiring to an RTB and IFM, and seat an RTB or IFM to the module. The following table describes what this chapter contains and its location.

Installing the ControlLogix I/O Module

You can install or remove the module while chassis power is applied.

(INSERT ART)


Installing the ControlLogix I/O Module 2-1

Keying the Removable Terminal Blockand the Interface Module

2-2

Connecting Wiring 2-3

Assembling the Removable TerminalBlock and the Housing

2-5

Installing the Removable Terminal Blockor Interface Module onto the Module

2-6

Checking the Indicators 2-7

Removing the Removable TerminalBlock from the Module

2-8

Removing the Module from the Chassis 2-8

Chapter Summary and What’s Next 2-18

!ATTENTION: The module is designed to support Removal and Insertion Under Power (RIUP). However, when you remove or insert an RTB with field-side power applied, unintended machine motion or loss of process control can occur. Exercise extreme caution when using this feature.


2-2 Installing the ControlLogix I/O Module

Keying the Removable Terminal Block and the Interface Module

Key the RTB or IFM in order to prevent inadvertantly making the wrong wire connections to your module. Use a unique keying pattern for each module.

(INSERT ART)

Reposition the tabs to rekey future module applications.



Connecting Wiring You can use an RTB or IFM to connect wiring to you module. If you are using an RTB, follow the directions below to conect wires to the RTB. An IFM has been prewired before you received it. If you are using an IFM to connect wiring to the module, skip this section and move to Chapter 4.

For all ControlLogix analog modules, except the 1756-IR6I, we recommend using Belden 8761 cable to wire the RTB. For the 1756-IR6I module, we recommend using Belden 9533 or 83503 cable to wire the RTB. The RTB terminations can accomodate 14-22 gauge shielded wire.

Before wiring the RTB, you must connect ground wiring.

Connect grounded end of the cable

1. Ground the drain wire.

Important: We recommend grounding the drain wire at the field-side. If you cannot ground at the field-side, ground at an earth ground on the chassis as shown below.

(INSERT ART)

2. Connect the insulated wires to the field-side.

Connect ungrounded end of the cable1. Cut the foil shield and drain wire back to the cable casing and apply

shrink wrap.

2. Connect the insulated wires to the RTB (see next page).



Three Types of RTBs (each RTB comes with housing)

• Spring clamp - 20 or 36 position• Cage clamp - 36 position

• NEMA clamp - 20 position(INSERT ART)

Refer to the table below for the Figure and page number of the specific wiring diagram for each ControlLogix I/O module.

Catalog Number Wiring Connections Catalog Number Wiring Connections Catalog Number Wiring Connections

1756-IF6I Page 2-9 1756-IF8 Page 2-12 1756-OF6VI Page 2-15

1756-IR6I Page 2-10 1756-IF16 Page 2-13 1756-OF4 Page 2-16

1756-IT6I Page 2-11 1756-OF6CI Page 2-14 1756-OF8 Page 2-17



Assembling the Removable Terminal Block and the Housing

Housing covers the wired RTB to protect wiring connections when the RTB is seated on the module.

(INSERT ART)



Installing the Removable Terminal Block or Interface Module onto the Module

Install the RTB or IFM onto the module to connect wiring.

Before installing the RTB, make certain:• field-side wiring of the RTB has been completed.

• the RTB housing is snapped into place on the RTB.• the RTB housing door is closed.

• the locking tab at the top of the module is unlocked.(INSERT ART)

!ATTENTION: Shock hazard exists. If the RTB is installed onto the module while the field-side power is applied, the RTB will be electrically live. Do not touch the RTB’s terminals. Failure to observe this caution may cause personal injury.The RTB is designed to support Removal and Insertion Under Power (RIUP). However, when you remove or insert an RTB with field-side power applied, unintended machine motion or loss of process control can occur. Exercise extreme caution when using this feature. It is recommended that field-side power be removed before installing the RTB ontothe module.



ns the

Checking the Indicators The indicators show CAL status (green) and a bi-colored LED for module “OK” (red/green)

During power up, an indicator test is done. The “OK” indicator turred for 1 second and then turns to flashing green if it has passed self-test.

LED indicators for input modules.

LED indicators for output modules.

(INSERT ART)

LED indicators

This display: Means:

OK Steady green light The inputs are being multicast and in normal operating state.

OK Flashing green lightThe module has passed internal diagnostics but has not established communication.

OK Flashing red lightPreviously established communication has timed out.

OK Steady red light The module must be replaced.

CAL Flashing green light The module is in calibration mode.

LED indicators



OK Steady green light The outputs are in a normal operating state.






Removing the Removable Terminal Block from the Module

If you need to remove the module from the chassis, you must first remove the RTB from the module.

(INSERT ART)

Removing the Module from the Chassis

(INSERT ART)

!ATTENTION: Shock hazard exists. If the RTB is removed from the module while the field-side power is applied, the module will be electrically live. Do not touch the RTB’s terminals. Failure to observe this caution may cause personal injury. The RTB is designed to support Removal and Insertion Under Power (RIUP). However, when you remove or insert an RTB with field-side power applied, unintended machine motion or loss of process control can occur. Exercise extreme caution when using this feature. It is recommended that field-side power be removed before removing the module.



1756-IF6I Wiring examples

Voltage input

(INSERT ART)

Current input

(INSERT ART)



1756-IR6I Wiring examples

Three-wire RTD device

(INSERT ART)

Four-wire RTD device

(INSERT ART)



1756-IT6I Wiring examples

Connect the Cold Junction SensorThe cold junction sensor only needs to be installed if you wire the module locally. If you are wiring the module with an IFM, do not connect the cold junction sensor.

Wire terminal #12 before connecting the cold junction sensor.

(INSERT ART)



1756-IF8 Wiring examples

Differential current(INSERT ART)

Differential voltage(INSERT ART)

Single-ended current(INSERT ART)

Single-ended voltage(INSERT ART)



1756-IF16 Wiring examples

Differential current

(INSERT ART)

Differential voltage(INSERT ART)

Single-ended current(INSERT ART)

Single-ended voltage(INSERT ART)



1756-OF6CI Wiring examples

Current output with output loads of 0-550 ohms

(INSERT ART)

Current output with output loads of 551-1000 ohms(INSERT ART)



1756-OF6VI Wiring example

(INSERT ART)



1756-OF4 Wiring examples

Current(INSERT ART)

Voltage(INSERT ART)



1756-OF8 Wiring examples

Current(INSERT ART)

Voltage(INSERT ART)





• installing the module

• keying the module• wiring the RTB

• installing the RTB or IFM onto the module• removing the module

Move on to Chapter 3 to understand how to program your module.


Chapter 3Configuring the ControlLogix Analog I/O Module


This chapter describes how to configure ControlLogix analog modules. The following table describes what this chapter contains and its location.

Configuring the Input Module

Because of the many analog devices available and the wide variety of possible configurations, you must configure both your I/O module and the channels of each module.

You may choose to use the default configuration for your module and channels rather than write configuration that is specific toyour application.

This chapter is designed to explain how to configure your modules and channels, with the explanations broken up for input and output modules. At the beginning of each new section there is a chart providing default values for each configurable point.

Configuring the Thermocouple Module

The thermocouple module (Cat. No. 1756-IT6I), due its temperature sensitivity, has more configurable points than any other ControlLogix analog module.

The following table displays the module default values for the thermocouple module.

Interface Module (IFM)

An IFM connects wiring to the module as described in Chapter 2. We recommend you use an IFM for any applications requiring the thermocouple wiring because it provides greater accuracy in measuring temperature within the module than an RTB.


Configurable Feature Module Default

Iterface Module 0

Cold Junction Disable 0

Cold Junction Offset 0.00

Temperature Mode 0

Real Time Sampling 100

Target to Originator Real Packet Interval 100,000

Producer Connection Point 0xA0


3-2 Configuring the ControlLogix Analog I/O Module

ling.

t, to ich

If you are using an IFM to connect wiring to the module, you must account for the IFM in configuration. Use the configuration screen on page 3- to set this feature.

Cold Junction (CJ) Disable

If you choose to use an RTB to connect wiring to your module, you must connect a CJ sensor to measure absolute temperature of the module.

Use the configuraton screen on page 3- to disable the CJ sensor.

Cold Junction (CJ) Offset

What is this feature? And what does it do? Is it configured on the same screen as the CJ Disable?

Use the configuration screen on page 3- to set the CJ Offset.

Temperature Mode

A thermocouple module can measure temperature in Fahrenheit or Celsius degrees. Use the Temperature Mode to designate a temperature value.

Use the configuration screen on page 3- to set the temperature mode.

Real Time Sampling (RTS)

The Real Time Sampling feature determines the time, in milliseconds, indicating how often the module’s inputs areto be sampled.

Use the configuration screen on page 3- to set the Real Time Samp

Target to Originator Real Packet Interval (TtoO RPI)

This feature deals with data being sent from the module, the Targethe controller, the Originator. Is it the type of data? The speed at whthe data is sent?

Use the configuration screen on page 3- to set the TtoO RPI.


Configuring the ControlLogix Analog I/O Module 3-3

Producer Connection Point (CP)

The Producer CP determines the type of connection to be established from the analog module to the controller. You must assign 3 values:

• Data type: floating point or integer

• Coordinated System Time timestamp: present or absent• Cold Junction data: present or absent

Use the configuration screen on page 3- to assign values for the Producer CP.

(INSERT ART)This space is left for a configuration screen.



Configuring Thermocouple Input Channels

Configuration defaults exist for thermocouple input channels just as defaults do for module-wide configurable features.

The following table displays the channel default values for the thermocouple module.

Alarm Disable

The Alarm Disable feature disables all alarms for a channel. Use the configuration screen on page 3- to turn off all alarms.

Process Alarm Latch

ControlLogix analog input modules have four process alarms: Low Alarm, Low Low Alarm, High Alarm, and High High Alarm. The Process Alarm Latch allows you to maintain an alarm enabled condition for any of these alarms even after the condition ceases.

Use the configuration screen on page 3- to enable the Process Alarm Latch.

Configurable Feature Channel Default

Alarm Disable 0

Process Alarm Latch 0

Rate Alarm Latch 0

Input Range 4

Sensor Type 0

Notch Filter 2

Digital Filter 0

Rate Alarm Trigger 0.00%

Low Signal -10.00

High Signal 78.00

Low Engineering -12.00

High Engineering 78.00

Low Alarm Trigger -12.00

High Alarm Trigger 78.00

Low Low Alarm Trigger -12.00

High High Alarm Trigger 78.00

Alarm Deadband 0.00

Calibration Bias 0.00



Rate Alarm Latch

If there is a minimum change of input between samples of a channel, the Rate Alarm is set. The Rate Alarm Latch allows you to maintain the alarm enabled even after the condition ceases.

Use the configuration screen on page 3- to enable the RateAlarm Latch.

Input Range

The Input Range feature selects the minimum and maximum signals that are detectable on a specific channel. Use the configuration screen on page 3- to determine the Input Range.

Sensor Type

The Thermocouple module allows you to configure a Sensor Type that linearizes the analog signal into a temperature value. Thermocouple modules support nine sensor types: B,C, E, J, K, N, R, S, & T.

Each sensor type may be configured for specific high and low values of signals that are linearized. The following chart displays the default high and low values for each sensor.

Note: The low and high default values for channel alarms are the same on each sensor as the low and high default values for input signals.

Use the configuration screen on page 3- to choose a Sensor Type and its configuration.

Notch Filter

The Notch Filter removes occurrences of the selected frequency and tis octaves in the input signal. This feature filters out line noise. Use the configuration screen on page 3- to configure the Notch Filter. What the heck is this all about?

Sensor Type B C E J K N R S T

Low Signal 250.0 0.0 -270.0 -210.0 -270.0 -270.0 -50.0 -50.0 -270.0

High Signal 1820.0 2315.0 1000.0 1200.0 1372.0 1300.0 1768.1 1768.1 400.0



.

Digital Filter

The Digital Filter adjusts firmware delays and provides smooth input transitions. Use the configuration screen on page 3- to adjust your digital filter times.

Rate Alarm Trigger

What is this? Does it have something with setting the input rate at which alrams are triggered?

Low Signal

What is this? The lowest signal at which inputs may be sent to the module and still have communication? Something to do with rates?

Configuring the RTD Module

The following table displays the module default values forthe RTD module.

Temperature Mode

A thermocouple module can measure temperature in Fahrenheit or Celsius degrees. Use the Temperature Mode to designate a temperature value.

Use the configuration screen on page 3- to set the temperature mode.



Use the configuration screen below to set the Real Time Sampling


Temperature Mode 0







This feature deals with data being sent from the module, the Target, to the controller, the Originator. Is it the type of data? The speed at which the data is sent?

Use the configuration screen below to set the TtoO RPI.





Use the configuration screen below to assign values for theProducer CP.

(INSERT ART)This space is left for a configuration screen

Configuring the Voltage/Current Input Modules

The following ControlLogix analog voltage/current input modules share configurable features and use the same configuration information:

• 1756-IF6I, IF8, IF16

The following table displays the module default values for these voltage/current modules.



t, to ich

I.



Use the configuration screen on the next page to set the RealTime Sampling.


This feature deals with data being sent from the module, the Targethe controller, the Originator. Is it the type of data? The speed at whthe data is sent?

Use the configuration screen on the next page to set the TtoO RP











Use the configuration screen on the next page to assign values for the Producer CP.

(INSERT ART)This space left for a configuration screen



Configuring the Output Module

Configuration of output modules mirrors that of input modules in the fact that you can configure the module and specific channels on each module. Use the following information to configure youroutput module.

Configuring Voltage/ Current Output Modules

The following ControlLogix analog voltage/current input modules share configurable features and use the same configuration information:

• 1756-OF4, OF6CI, OF6VI, OF8

You may choose to use the default configuration for your module and channels rather than write configuration that is specific toyour application.

The following table displays the module default values for these voltage modules.

Idle to Fault Transition

You must configure your output to transition to a safe state if you lose direct control of them through a fault or through the controller switching to idle mode.

The Idle to Fault Transition features allows you to configure each output to hold the last state or go to a value.

Use the configuration screen on page 3- to set the Idle to Fault Transition.


This feature deals with data being sent from the module, the Target, to the controller, the Originator. Is it the type of data? The speed at which the data is sent?

Use the configuration screen on page 3- to set the TtoO RPI.


Idle to Fault Transition 100









Use the configuration screen below to assign values for theProducer CP.

(INSERT ART)This space left for a configuration screen


Chapter 4Calibrating the ControlLogix Analog I/O Module


This chapter describes how to configure ControlLogix analog modules. The following table describes what this chapter contains and its location.

Calibrating Input Modules Input calibration is a mult-step process that involves multiple services being sent to the module. The following text and flow chart describe the process itself. A more detailed description of each step follows the flow chart.

The Calibrate Inputs service switches the module into a calibrating mode. This initiates input calibration and faults all module points if a real-time connection is currently open. Input channels have specific calibration points, low and high, which you must input to the module. Some modules support calibration in multiple ranges.

You have a choice of services that sample specified channels for the input module. Send for a sample using one of the following:

• Accept Input Low Cal• Accept Input High Cal

If an error occurs when these services are sent, the accept services can be resent and another sample taken. Resending the accept services transitions the module to the Sampled Both High & Low state and verifies the calibration constants taken.

Verification of the calibration constants results in one of two conditions:

• If the constants are bad, the module transitions to the Bad Calibration state and awaits a new accept service attempt.

• If the constants are valid, the module transitions to the calibration end state, Valid Cal Completed.

After calibration is completed, the new constants are stored and the module returned to its state prior to the Calibrate Inputs service beginning.


Calibrating input modules

Calibrating output modules

Unlatching status

Getting all attributes

Sending all attributes

Chapter summary and what’s next


4-2 Calibrating the ControlLogix Analog I/O Module

This flow chart provides a brief overview of the input calibration process.

Calibrate Inputs Service

This service begins the calibration process. Use the following screen to use the Calibrate Inputs Service.

(INSERT ART)


Calibrating the ControlLogix Analog I/O Module 4-3

Input Calibration Points

Use the following chart to set calibration points for your input modules.

Use the following calibration screen to set these points.

(INSERT ART)

Calibrating Channels in Multiple Ranges

The following ControlLogix analog modules may be calibrated in multiple input ranges:

• 1756-IF6I, IF8, IF16, IR6I, and IT6IThe calibration range for each module is selected by the most significant bit in the byte of the cal mask. Use one of thefollowing ranges:

• If the bit is clear, the normal calibration range is +/-10 or -12 to 78mV.

• If the bit is set, the alternate calibration range is chosen, either 0 to 20mA on the Vin or -12 to 30mV on the thermocouple.

Channel TypeInput Range of

CalibrationLow Calibration

ReferenceHigh Calibration

Reference

Vin Isolated-10 to 10V0 to 20mA

0V4.0mA

10V20mA

RTD 1 to 487W 1W 487W

Thermocouple-12 to 78mV-12 to 30

-12mV-14.22mV

78mV30.78mV

Vin High-10 to 10V0 to 20mA



Accept Input Low Calibration Service

This service samples the inputs for calibration points. The sample is then checked for validity against the expected low calibration reference point and status is returned in the following two fields:

• A status field indicating the success or failure of the low calibration service itself.

• A status field indicating the current calibration state for each point in the AIG by displaying a status for the high and low references of each point.

Status indicates either nothing was done, a successful reference was performed, a bad reference was taken, or calibrationwas done.

Use the screen below to trigger the Accept Input LowCalibration Service.

(INSERT ART)



Accept Input High Calibration Service

This service samples the inputs for calibration points. The sample is then checked for validity against the expected high calibration reference point and status is returned in the following two fields:

• A status field indicating the success or failure of the high calibration service itself.



Use the following screen to trigger the Accept Input Low Calibration Service.

(INSERT ART)



Abort Calibration

This service transitions the module out of the calibration state and returns it to the operating state prior to beginning Calibrating Inputs.

This service also sets the Bad Calibration status for any channel which had a calibration error at the time of the abort. Use the following screen to trigger Abort Calibration.

(INSERT ART)



Calibrating Output Modules

Output calibration is a mult-step process that involves multiple services being sent to the module. The following text and flow chart describe the process itself. A more detailed description of each step follows the flow chart.

The Calibrate Outputs service switches the module into a calibrating mode. This initiates output calibration and faults all module points if a real-time connection is currently open. Output channels output at specific reference points, low and high, which you must set to the module.

You have a choice of services that set reference points for the output module. Set your reference point using one of the following:

• Generate Output Low Reference• Generate Output High Reference

After setting one end, low or high, record the the measured output levels and use the other reference service to set opposite references.

The Calibrate Outputs Finish service transitions the module into the Calibration Constant Verification. Use this service to check the calibration of each output channel. Verification of the calibration constants results in one of two conditions:

• If the constants are bad, the module transitions to the Bad Calibration state and awaits a new reference service to correctthe calibration.

• If the constants are valid, the module transitions to the Valid Calibration Completed state.

After calibration is completed, the new constants are stored and the module returned to its state prior to the Calibrate Outputs service beginning.



This flow chart provides a brief overview of the output calibration process.

(INSERT ART)

Calibrate Outputs Service

This service begins the calibration process. Use the following screen to initiate the Calibrate Outputs Service.

(INSERT ART)



Generate Output Low Reference Calibration Service

This service triggers outputs to output the low calibration reference signal for you to measure and record. This information is returned in the following two fields:




(INSERT ART)



Generate Output High Reference Calibration Service

This service triggers outputs to output the high calibration reference signal for you to measure and record. This information is returned in the following two fields:




(INSERT ART)



Calibration Output Finish Service

This service passes recorded output reference pairs to the module for verification. When this process is completed, information is returned in the following two fields:




Reference pairs are only displayed for channels that have been calibrated. If the pairs are valid, the calibration constants are stored in non-volatile storage and the calibration state is exited.

(INSERT ART)



Abort Calibration Service

This service transitions the module out of the calibration state and returns it to the operating state prior to beginning Calibrating Inputs.

This service also sets the Bad Calibration status for any channel which had a calibration error at the time of the abort. Use the following screen to trigger Abort Calibration.

(INSERT ART)



Unlatching Status Bits The Unlatch Status service can be directed to either the Analog Input Point or Analog Output Point Object to unlatch latched status bits. Alarms can be unlatched for a single point at a time, either a single alarm at a time or all latchable alarms on the channel simultaneously.

When an alarm is unlatched, it is clear and can be recalculated. If the alarm condition no longer exists, the alarm will clear. But if the alarm is still active, it will remain set and never clear despite the unlatching.

Use the following screen to unlatch status bits.

(INSERT ART)



Using Device Object Services

ControlLogix analog I/O modules support the following two services to the Device Object:

• Get Attributes All

• Reset

The Get Attributes All service retrieves module information. The Reset service causes the module to undergo a software reset.

Use the following screen to use these services.

(INSERT ART)



Set Attributes All Indirect

This service is used to send data to the module. Once a connection has been established, use this service to send one of the following three types of configuration information to the module:

• Default configuration• Float configuration

• Raw configuration

Note: Float and raw configuration are only accepted by the module if it is already operating in the mode of the assembly sent.

Use the following screen to set attributes.

(INSERT ART)



Get Attributes All Indirect

This service retrieves module data. You can obtain two different types of information. Use this service to get one of the following:

• The float or raw configuration displays the module’scurrent configuration.

• The float information or raw information assemblies provide calibration constants.

Use the following screen to use these services.

(INSERT ART)



• calibrating inputs

• calibrating outputs• setting attributes

• getting attributes

Move on to Chapter 5 to learn how to troubleshoot your module.


Chapter 5Troubleshooting

Chapter Objectives In this chapter you will learn about the indicators on the ControlLogix analog I/O module, and how to use them to troubleshoot the module.

Using Indicators Each ControlLogix analog I/O module has indicators which provide indication of module status.

ControlLogix modules use the following:

LED indicators for input modules.

(INSERT ART)

LED indicators









5-2 Troubleshooting

LED indicators for output modules.

(INSERT ART)



• troubleshooting the module

Move on to Appendix A to see specifications for each module.

LED indicators









Appendix ASpecifications

For Specifications for: Refer to:1756-IF6I Page A-2

1756-IF8 Page A-3

1756-IF16 Page A-4

1756-IR6I Page A-5

1756-IT6I Page A-6

1756-OF6CI Page A-7

1756-OF6VI Page A-8

1756-OF4 Page A-9

1756-OF8 Page A-10


A-2 Specifications

1756-IF6I SpecificationsModule Location 1756 ControlLogix Chassis

Resolution+/-10.5V range0 to 10.5V range0 to 5.25V range0-21mA range

Approximately 16 bits across each range shown below343µV/bit171µV/bit86µV/bit0.34µA/bit

Input Impedance >10MΩ Voltage, 249Ω Current

Open Circuit Detection Time Upscale reading within 5s

Normal Mode Noise Rejection >60dB at 60Hz

Common Mode Noise Rejection 120dB at 60Hz, 100dB at 50Hz

Channel Bandwidth 0 to 15Hz (-3dB)

Settling Time to 5% of Full Scale <80ms

Calibrated Accuracy at 25oC Better than 0.1% of range

Module Scan Time for all Channels <25ms floating point<10ms integer

Overvoltage Capability 120V AC/DC continuous at room temperature Voltage8V AC/DC with on-board current resistor

Input Offset Drift with Temperature 2µV/degree C typical

Number of Inputs 6 individually isolated channels

Input Range +/-10.5V, 0-10.5V, 0-5.25V, 0-21mA

Gain Drift with Temperature 35 ppm/degree C typical Voltage45 ppm/degree C typical Current

Backplane Current 250mA @5V dc & 125mA @ 24V dc

Module Conversion Method

Thermal Dissipation

Power Dissipation

Module Non-linearity

Module Repeatability

Effect of Incorrect Terminal Connection

Module Error over Full Temp. Range

Module Temporary Deviation

Inductive Load

Capacitive Load

Isolation VoltageChannel to channelUser to system

100% tested at 2715V dc for 1s100% tested at 2715V dc for 1s

Environmental ConditionsOperating TemperatureStorage TemperatureRelative Humidity

0 to 60oC (32 to 140oF)-40 to 85oC (-40 to 185oF)5 to 95% noncondensing

Conductors Wire Size

Category

14 gauge (2mm2) stranded maximum1

22 gauge (0.456mm2) stranded minimum3/64 inch (1.2mm) insulation maximum22, 3

RTB Screw Torque (Cage clamp) 5 inch-pounds (0.5Nm) maximum

Module Keying Electronic

RTB Keying User defined

Field Wiring Arm and Housing 20 Position RTB (1756-TBNH or TBSH)1

Screwdriver Width for RTB 1/8 inch (3.2mm) maximum


Specifications A-3

1756-IF8 SpecificationsModule Location 1756 ControlLogix Chassis

ResolutionVoltageCurrent

15 bits plus sign bipolar (16 bits)320.435µV/cnt640.869µA/cnt

Input impedanceVoltageCurrent

>10MHz<20Ω<20Ω

Open circuit detection time Upscale reading within 5s

Normal mode noise rejection >60dB at 60Hz

Common mode noise rejection 120dB at 60Hz, 100dB at 50Hz

Channel bandwidth 0 to 15Hz (-3dB)

Settling time to 5% of full scale <80ms

Calibrated accuracy at 25oC Better than 0.1% of range

Module scan time for all channels <25ms

Overvoltage capability 120V AC/DC continuous at room termperature

Input offset drift with temperature 2µV/degree C typical

Number of Inputs 16 single ended or 8 differential

Input voltage range +/-10.5V maximum

Gain drift with temperature 35 ppm/degree C typical



Backplane Current

Module Conversion Method Sigma-delta ADC

Thermal Dissipation

Power Dissipation

Module Non-linearity +/-2LSB <~0.006%>

Module Repeatability 1/2 hour +/-4LSB <~0.012%> at minimum filter


30V ac/dc on voltage8V ac/dc on current


Module Temporary Deviation +/-2%

Inductive Load

Capacitive Load




Category


3/64 inch (1.2mm) insulation maximum12, 3







A-4 Specifications

1756-IF16 SpecificationsModule Location 1756 ControlLogix Chassis

ResolutionVoltageCurrent

15 bits plus sign bipolar (16 bits)320.435µV/cnt640.869µA/cnt

Input impedanceVoltageCurrent

>20kΩ249Ω

Open circuit detection time Upscale reading within 5s

Normal mode noise rejection >80dB at 60Hz

Common mode noise rejection 120dB at 60Hz, 100dB at 50Hz

Channel bandwidth 0 to 200Hz (-3dB) *See user manual

Settling time to 5% of full scale 4ms *See user manual

Calibrated accuracy at 25oC Better than 0.1% of range

Module scan time for all channels <35ms *See user manual

Overvoltage capability 30V AC/DC continuous at room termperature

Input offset drift with temperature 2µV/degree C typical

Number of Inputs 16 single ended or 8 differential

Input voltage range +/-10.5V maximum

Gain drift with temperature 35 ppm/degree C typical


Not isolated100% tested at 2500V dc for 1s

Backplane Current

Module Conversion Method Sigma-delta ADC

Thermal Dissipation

Power Dissipation






Module Temporary Deviation +/-2%

Inductive Load

Capacitive Load




Category


3/64 inch (1.2mm) insulation maximum12, 3




Field Wiring Arm and Housing 36 Position RTB (1756-TBCH or TBS6H)1



Specifications A-5

1756-IR6I SpecificationsModule Location 1756 ControlLogix Chassis

Sensors Supported Resistance 4-4020Ω100, 200, 500, 1000Ω Platinum, alpha=385100, 200, 500, 1000Ω Platinum, alpha=3916120Ω Nickel, alpha=672100, 120, 200, 500Ω Nickel, alpha=61810Ω Copper

Resolution in Ranges487Ω, 1000Ω2000Ω, 4020Ω

Approximately 16 bits across each input range7.7mΩ/bit, 15mΩ/bit,30mΩ/bit, 60mΩ/bit

Accuracy 0.1% of full scale at 25oC

Open Wire Detection Out of range reading reported

Open Wire Detection Time <5s

Common Mode Noise Rejection 120dB at 60Hz, 100db at 50Hz

Normal Mode Noise Rejection 60dB at 60Hz

Channel Bandwidth DC to 15Hz (-3dB)

Settling Time to 5% of Range <80ms


Number of Inputs 6 isolated channels

Signal Input Range 4-487, 4-1000, 4-2000, 4-4020ΩOvervoltage Capability 24V AC/DC continuous at room temperature

Input Offset Drift with Temperature 10mΩ/degree C

Gain Drift with Temperature 50 ppm/degree C typical

Backplane Current 250mA @ 5V dc & 150mA @ 24V dc






Category









A-6 Specifications

1756-IT6I SpecificationsModule Location 1756 ControlLogix Chassis

Supported Thermocouple Types B, E, J, K, R, S, T, N, C

Resolution 16 bits (1.4µV typical)0.7µV/bit on high resolution range

Accuracy @ 25oC(-12 to +78mV Range)(-12 to +30mV Range)

0.1% FSR (+/-90µV) @ 25oC0.1% FSR (+/-42µV) @ 25oC

Accuracy (Cold Junction Sensor)Local CJ SensorUncertaintyRemote CJ Sensor

From +/-0.3 up to +/-3.2oC, depending on channel+/-0.3oC

Open Circuit Detection Upscale reading

Open TC Detection Time 5s typical

Normal Mode Noise Rejection 60dB at 60Hz

Common Mode Noise Rejection 120dB at 60Hz, 100dB at 50Hz

Channel Bandwidth 0 to 15Hz (-3dB)

Settling Time to 5% of Full Scale <80ms


Overvoltage Capability 120V AC/DC continuous at room temperature

Input Offset Drift with Temperature 0.5µV/degree C typical



Number of Inputs 6 individually isolated channels

Input Voltage Ranges -12mV to +78mV-12mV to +30mV (high resolution range)







Category









Specifications A-7

1756-OF6CI SpecificationsModule Location 1756 ControlLogix Chassis

Current Resolution 13 bits across 21mA (2.7µA)

Open Circuit Detection None

Output Overvoltage Protection 24V AC/DC continuous at room temperature

Output Short Circuit Protection Electronically current limited to 21mA or less

Drive Capability 20mA maximum into loads of 500Ω or less. Loads of 1000Ω or less may be achieved with alternate field terminations.

Output Settling Time <2ms to 95% of final value with resistive loads

Calibrated Accuracy at 25oC Better than 0.1% of range from 4mA to 21mA

Module Scan Time for all Channels <25ms floating<10ms integer

Input Offset Drift with Temperature 1 µA/degree C typical

Number of Outputs 6 individually isolated channels

Output Current Range 0 to 21mA








Category









A-8 Specifications

1756-OF6VI SpecificationsModule Location 1756 ControlLogix Chassis

Voltage Resolution 14 bits across 21V (1.3mV)(13 bits across 10.5V +sign bit)

Output Impedance <1ΩOpen Circuit Detection Time None


Output Short Circuit Protection Continuous with electronic current limiting




Output Offset Drift with Temperature 60 µV/degree C typical



Output Voltage Range +/- 10.5V maximum







Category









Specifications A-9

1756-OF4 SpecificationsModule Location 1756 ControlLogix Chassis

Voltage Resolution 16 bits across 21V (320µV)(15 bits across 10.5V +sign bit)

Output Impedance <1ΩOpen Circuit Detection Time Not provided voltage, 1s current













Module Conversion Method R-Ladder DAC Sample/Hold

Thermal Dissipation

Power Dissipation 5.5W maximum



Module Ripple SAM





Inductive Load

Capacitive Load




Category









A-10 Specifications

1756-OF8 SpecificationsModule Location 1756 ControlLogix Chassis

Voltage Resolution 16 bits across 21V (320µV)(15 bits across 10.5V +sign bit)

Output Impedance <1ΩOpen Circuit Detection Time Not provided voltage, 1s current













Module Conversion Method R-Ladder DAC Sample/Hold

Thermal Dissipation

Power Dissipation 5.5W maximum



Module Ripple SAM





Inductive Load

Capacitive Load




Category









Index
TTypes of block I/O, 1-3

2 Index


Publication 1756-6.5.9 – March 1998 PN 955129-24Copyright 1997 Allen-Bradley Company, Inc. Printed in USA

Allen-Bradley, a Rockwell Automation Business, has been helping its customers improve productivity and quality for more than 90 years. We design, manufacture and support a broad range of automation products worldwide. They include logic processors, power and motion control devices, operator interfaces, sensors and a variety of software. Rockwell is one of the world’s leading technology companies.

Worldwide representation.

Argentina • Australia • Austria • Bahrain • Belgium • Brazil • Bulgaria • Canada • Chile • China, PRC • Colombia • Costa Rica • Croatia • Cyprus • Czech Republic • Denmark • Ecuador • Egypt • El Salvador • Finland • France • Germany • Greece • Guatemala • Honduras • Hong Kong • Hungary • Iceland • India • Indonesia • Ireland • Israel • Italy • Jamaica • Japan • Jordan • Korea • Kuwait • Lebanon • Malaysia • Mexico • Netherlands • New Zealand • Norway • Pakistan • Peru • Philippines • Poland • Portugal • Puerto Rico • Qatar • Romania • Russia-CIS • Saudi Arabia • Singapore • Slovakia • Slovenia • South Africa, Republic • Spain • Sweden • Switzerland • Taiwan • Thailand • Turkey • United Arab Emirates • United Kingdom • United States • Uruguay • Venezuela • Yugoslavia

Allen-Bradley Headquarters, 1201 South Second Street, Milwaukee, WI 53204 USA, Tel: (1) 414 382-2000 Fax: (1) 414 382-4444

1756 Analog User Detail

Documents

Transcript of 1756 Analog User Detail