Allen-Bradley Micrologix 1500 User manual

MicroLogix™ 1500

Programmable

Controllers

(Bulletin 1764)

User Manual

AB Spares

Important User

Information

Because of the variety of uses for the products described in this publication, those

responsible for the application and use of this control equipment must satisfy

themselves that all necessary steps have been taken to assure that each application

and use meets all performance and safety requirements, including any applicable

laws, regulations, codes and standards.

The illustrations, charts, sample programs and layout examples shown in this

guide are intended solely for purposes of example. Since there are many variables

and requirements associated with any particular installation, Rockwell

International Corporation does not assume responsibility or liability (to include

intellectual property liability) for actual use based upon the examples shown in

this publication.

Rockwell Automation publication SGI-1.1, Safety Guidelines for the Application,

Installation and Maintenance of Solid-State Control (available from your local

Rockwell Automation office), describes some important differences between

solid-state equipment and electromechanical devices that should be taken into

consideration when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or part,

without written permission of Rockwell Automation, is prohibited.

Throughout this manual we use notes to make you aware of safety considerations:

Attention statements help you to:

•identify a hazard

•avoid a hazard

•recognize the consequences

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ATTENTION

Identifies information about practices or circumstances that

can lead to personal injury or death, property damage or

economic loss

IMPORTANT Identifies information that is critical for successful

application and understanding of the product.

P-1 Publication1762-RM001A-US-P

Preface

Read this preface to familiarize yourself with the rest of the manual. It provides

information concerning:

•who should use this manual

•the purpose of this manual

•related documentation

•conventions used in this manual

•Rockwell Automation support

Who Should Use this

Manual

Use this manual if you are responsible for designing, installing, programming, or

troubleshooting control systems that use MicroLogix 1500 controllers.

You should have a basic understanding of electrical circuitry and familiarity with

relay logic. If you do not, obtain the proper training before using this product.

Purpose of this Manual

This manual is a reference guide for MicroLogix 1500 controllers. It describes the

procedures you use to install, wire, and troubleshoot your controller. This manual:

•explains how to install and wire your controllers

•gives you an overview of the MicroLogix 1500 controller system

Refer to publication 1762-RM001B-US-P, MicroLogix 1200 and MicroLogix 1500

Programmable Controllers Instruction Set Reference Manual for the MicroLogix 1200

and 1500 instruction set and for application examples to show the instruction set

in use. Refer to your programming software user documentation for more

information on programming your MicroLogix 1500 controller.

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Publication 1762-RM001A-US-P

Preface P-2

Related Documentation

The following documents contain additional information concerning Rockwell

Automation products. To obtain a copy, contact your local Rockwell Automation

office or distributor.

Common Techniques

Used in this Manual

The following conventions are used throughout this manual:

•Bulleted lists such as this one provide information, not procedural steps.

•Numbered lists provide sequential steps or hierarchical information.

•Italic type is used for emphasis.

For Read this Document Document Number

Information on understanding and applying micro controllers. MicroMentor 1761-MMB

Information on the MicroLogix 1500 Controllers instruction set MicroLogix 1200 and 1500

Programmable Controllers Instruction

Set Reference Manual

1762-RM001B-US-P

Information on mounting and wiring the MicroLogix 1500 Base Units,

including a mounting template for easy installation MicroLogix 1500 Programmable

Controllers Base Unit Installation

Instructions

1764-IN001A-ML-P

A description on how to install and connect an AIC+. This manual also

contains information on network wiring. Advanced Interface Converter (AIC+)

User Manual 1761-6.4

Information on how to install, configure, and commission a DNI DeviceNet™ Interface User Manual 1761-6.5

Information on DF1 open protocol. DF1 Protocol and Command Set

Reference Manual 1770-6.5.16

In-depth information on grounding and wiring Allen-Bradley

programmable controllers Allen-Bradley Programmable

Controller Grounding and Wiring

Guidelines

1770-4.1

A description of important differences between solid-state

programmable controller products and hard-wired electromechanical

devices

Application Considerations for

Solid-State Controls SGI-1.1

An article on wire sizes and types for grounding electrical equipment National Electrical Code - Published by the National Fire

Protection Association of Boston, MA.

A complete listing of current documentation, including ordering

instructions. Also indicates whether the documents are available on

CD-ROM or in multi-languages.

Allen-Bradley Publication Index SD499

A glossary of industrial automation terms and abbreviations Allen-Bradley Industrial Automation

Glossary AG-7.1

Publication 1762-RM001A-US-P

Preface P-3

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 appendix on page C-1 in this manual first. Then call your local

Rockwell Automation representative.

Your Questions or Comments on this Manual

If you find a problem with this manual, or you have any suggestions for how this

manual could be made more useful to you, please contact us at the address below:

Rockwell Automation

Control and Information Group

Technical Communication, Dept. A602V

P.O. Box 2086

Milwaukee, WI 53201-2086

or visit our internet page at:

http://www.ab.com/micrologix or http://www.rockwellautomation.com

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Preface P-4

iPublication 1764-UM001A-US-P

Table of Contents

Chapter 1

Hardware Overview

Hardware Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

MicroLogix 1500 Component Descriptions . . . . . . . . . . . . . . . . . . 1-2

Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Communication Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Compact™ Expansion I/O. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Chapter 2

Installing Your Controller

Agency Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Compliance to European Union Directives. . . . . . . . . . . . . . . . . . . 2-1

Installation Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

Power Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Preventing Excessive Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

Master Control Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Base Unit Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Controller Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

Mounting the Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

Installing Controller Components. . . . . . . . . . . . . . . . . . . . . . . . . 2-15

Chapter 3

Wiring Your Controller

Wiring Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Using Surge Suppressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Grounding the Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

Sinking and Sourcing Circuits. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Controller I/O Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Chapter 4

Communication Connections

Default Communication Configuration . . . . . . . . . . . . . . . . . . . . . 4-1

Communications Toggle Push Button . . . . . . . . . . . . . . . . . . . . . . 4-2

Connecting to the RS-232 Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Connecting to a DH-485 Network . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Connecting to DeviceNet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Chapter 5

Using Trim Pots and the Data

Access Tool (DAT)

Trim Pot Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Data Access Tool (DAT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Chapter 6

Using Real-Time Clock and

Memory Modules

Real-Time Clock Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Memory Module Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

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Table of Contents ii

Appendix A

Specifications

Controller Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Controller Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-7

Compact I/O Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8

Appendix B

Replacement Parts

MicroLogix 1500 Replacement Kits . . . . . . . . . . . . . . . . . . . . . . . . B-1

Lithium Battery (1747-BA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Replacement Terminal Blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Replacement Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Appendix C

Troubleshooting Your System

Understanding Controller LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

Controller Error Recovery Model . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Identifying Controller Faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

Calling Rockwell Automation for Assistance. . . . . . . . . . . . . . . . . . C-5

Appendix D

Upgrading Your Operating

System

Preparing for Upgrade. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Performing the Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-2

Missing/Corrupt OS LED Pattern . . . . . . . . . . . . . . . . . . . . . . . . D-2

Appendix E

Understanding

Communication Protocols

RS-232 Communication Interface . . . . . . . . . . . . . . . . . . . . . . . . . E-1

DF1 Full-Duplex Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-1

DF1 Half-Duplex Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4

Using Modems with MicroLogix 1500 Programmable Controllers. E-7

DH-485 Communication Protocol. . . . . . . . . . . . . . . . . . . . . . . . . E-8

Modbus RTU Slave Communication Protocol

(MicroLogix 1764-LSP and 1764-LRP Series B processors only) . E-17

ASCII Protocol (MicroLogix 1500 1764-LSP and 1764-LRP

Series B Processors only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-18

Appendix F

System Loading and Heat

Dissipation

System Loading Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-1

Calculating Heat Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . F-9

Glossary

Index

1Publication 1764-UM001A-US-P

Chapter

Hardware Overview

Hardware Features

The MicroLogix 1500 programmable controller contains a power supply, input

circuits, output circuits, and a processor. The controller is available in 24 I/O and

28 I/O configurations.

The hardware features of the controller are:

Feature Description Feature Description

1 Removable Terminal Blocks 7 Memory Module/Real-Time Clock(1)

(1) Optional.

2 Interface to Expansion I/O,

Removable ESD Barrier 8Replacement Battery(1)

3 Input LEDs 9 Battery

4 Output LEDs 10 Terminal Doors and Label

5 Communication Port 11 Data Access Tool(1)

6 Status LEDs 12 Mode Switch, Trim Pots

RUN PROG

REM

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1-2 Hardware Overview

MicroLogix 1500

Component Descriptions

A controller is composed of a standard processor (1764-LSP or enhanced

1764-LRP with RS-232 port) and one of the base units listed below. The FET

transistor outputs are available on the 1764-28BXB base only.

Base Units

Processors

Processor (Catalog Number 1764-LSP)

Processor (Catalog Number 1764-LRP)

Catalog Number Base Unit I/O and Power Supply

1764-24AWA Twelve 120V ac inputs, twelve relay outputs and 120/240V ac power supply

1764-24BWA Twelve 24V dc inputs, twelve relay outputs and 120/240V ac power supply

1764-28BXB Sixteen 24V dc inputs, six FET and six relay outputs and 24V dc power supply

Communications Port

•DTE (male) 9-pin D-shell connector

•30V dc isolation

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