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MicroLogix™ 1500

Programmable

Controllers

Bulletin 1764

User Manual

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, Allen-Bradley does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication.

Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application, Installation and Maintenance of Solid-State Control (available from your local Allen-Bradley 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 publication, notes may be used to make you aware of safety considerations. The following annotations and their accompanying statements help you to identify a potential hazard, avoid a potential hazard, and recognize the consequences of a potential hazard:

MicroLogix, Compact I/O, and RSLogix are trademarks of Rockwell Automation.

WARNING

Identifies information about practices or circumstances that can cause an explosion in a hazardous environment, which may lead to personal injury or death, property damage, or economic loss.

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.

Publication 1764-UM001B-EN-P - March 2002

Summary of Changes iv

Table of Contents

Using Trim Pots and the Data

Using Real-Time Clock and

• v Publication 1764-UM001B-EN-P - April
  • Who Should Use this Manual. P- Preface
  • Purpose of this Manual P-
  • Related Documentation P-
  • Common Techniques Used in this Manual P-
  • Rockwell Automation Support P-
    • Local Product Support P-
    • Technical Product Assistance P-
    • Your Questions or Comments on this Manual P-
  • Chapter
• Hardware Overview Hardware Features 1-
  • MicroLogix 1500 Component Descriptions 1-
    • Base Units 1-
    • Processors 1-
    • Data Access Tool (Catalog Number 1764-DAT) 1-
    • Memory Modules/Real-Time Clock 1-
    • Cables 1-
  • Programming 1-
  • Communication Options 1-
  • Compact™ Expansion I/O 1-
    • End Cap 1-
    • Expansion Power Supply and Cables 1-
    • System Requirements for Using Expansion Modules 1-
    • Adding an I/O Bank 1-
    • Addressing Expansion I/O 1-
    • Expansion I/O Power Failure 1-
  • Chapter
• Installing Your Controller Agency Certifications. 2-
  • Compliance to European Union Directives 2-
    • EMC Directive 2-
    • Low Voltage Directive 2-
  • Installation Considerations. 2-
  • Safety Considerations 2-
    • Hazardous Location Considerations 2-
    • Disconnecting Main Power. 2-
    • Safety Circuits 2-
    • Power Distribution. 2-
    • Periodic Tests of Master Control Relay Circuit 2-
  • Power Considerations 2-
    • Isolation Transformers 2-
    • Power Supply Inrush 2-
    • Loss of Power Source. 2-
    • Input States on Power Down 2- Table of Contents vi
    • Other Types of Line Conditions 2-
  • Preventing Excessive Heat 2-
  • Master Control Relay 2-
    • Using Emergency-Stop Switches 2-
    • Schematic (Using IEC Symbols) 2-
    • Schematic (Using ANSI/CSA Symbols). 2-
  • Base Unit Mounting Dimensions 2-
  • Controller Spacing. 2-
  • Mounting the Controller 2-
    • Using a DIN Rail 2-
    • Base Unit Panel Mounting 2-
  • Installing Controller Components. 2-
    • Prevent Electrostatic Discharge 2-
    • Processor. 2-
    • Data Access Tool (DAT). 2-
    • Memory Module/Real-Time Clock. 2-
    • Compact I/O 2-
  • Chapter
• Wiring Your Controller Wiring Requirements. 3- - Wiring Recommendation 3-
  • Using Surge Suppressors 3-
    • Recommended Surge Suppressors 3-
  • Grounding the Controller 3-
  • Wiring Diagrams 3-
    • Miswiring - 1764-28BXB Only. 3-
    • Terminal Block Layouts 3-
    • Terminal Groupings 3-
  • Sinking and Sourcing Input Circuits 3-
    • 1764-24AWA Wiring Diagram 3-
    • 1764-24BWA Wiring Diagram with Sinking Inputs 3-
    • 1764-24BWA Wiring Diagram with Sourcing Inputs 3-
    • 1764-28BXB Wiring Diagram with Sinking Inputs 3-
    • 1764-28BXB Wiring Diagram with Sourcing Outputs 3-
  • Controller I/O Wiring 3-
    • Minimizing Electrical Noise. 3-
    • Transistor Output Transient Pulses 3-
  • Chapter
• Communication Connections Default Communication Configuration 4-
  • Communications Toggle Push Button. 4-
  • Connecting to the RS-232 Port 4-
    • DF1 Full-Duplex Communication Parameters 4-
    • Making a DF1 Full-Duplex Point-to-Point Connection 4-
  • Using a Modem 4- Table of Contents vii
  • Isolated Modem Connection. 4-
  • Connecting to a DF1 Half-Duplex Network 4-
• Connecting to a DH-485 Network 4-
  • DH-485 Configuration Parameters. 4-
  • Recommended Tools 4-
  • DH-485 Communication Cable 4-
  • DH-485 Connector 4- Communication Cable Connection to the
  • Connecting the AIC+ 4-
• Connecting to DeviceNet 4-
  • Cable Selection Guide 4-
• Connecting to Ethernet 4-
  • Ethernet Connections 4-
  • RS-232 Connections 4-
• Chapter
• Trim Pot Operation 5- Access Tool (DAT)
  • Trim Pot Information Function File 5-
  • Error Conditions 5-
• Data Access Tool (DAT) 5-
  • DAT Keypad and Indicator Light Functions 5-
  • Power-Up Operation 5-
  • DAT Function File 5-
  • Power Save Timeout (PST) Parameter 5-
  • Understanding the DAT Display 5-
  • Entering Bit Mode 5-
  • Entering Integer Mode 5-
  • Monitoring and Editing. 5-
  • F1 and F2 Functions. 5-
  • Working Screen Operation 5-
  • Non-Existent Elements 5-
  • Controller Faults 5-
  • Error Conditions 5-
• Chapter
• Real-Time Clock Operation 6- Memory Modules
  • Removal/Insertion Under Power. 6-
  • Real-Time Clock Function File 6-
  • Accuracy 6-
  • Writing Data to the Real-Time Clock. 6-
  • RTC Battery Operation 6-
• Memory Module Operation 6-
  • User Program and Data Back-Up 6-
  • Program Compare 6-
    • Data File Download Protection. 6- Table of Contents viii
    • Memory Module Write Protection 6-
    • Removal/Insertion Under Power. 6-
    • Memory Module Information File 6-
• Specifications Controller Specifications A- Appendix A - Choosing a Power Supply A- - Transistor Output Transient Pulses A-
  • Controller Dimensions. A-
  • Compact I/O Dimensions A-
    • Panel Mounting A-
    • End Cap A-
• Replacement Parts MicroLogix 1500 Replacement Kits. B- Appendix B
  • Lithium Battery (1747-BA) B-
    • Installing B-
    • Battery Handling B-
    • Storing B-
    • Transporting B-
    • Disposing B-
  • Replacement Terminal Blocks B-
  • Replacement Doors B-
    • Base Terminal Door (1764-RPL-TDR1) B-
    • Processor Access Door (1764-RPL-CDR1) B-
    • (included in 1764-RPL-DR) B- Base Comms Door
    • (included in 1764-RPL-DR) B- Trim Pots/Mode Switch Cover Door
• Troubleshooting Your System Understanding Controller LEDs C- Appendix C - When Operating Normally C- - When an Error Exists C-
  • Controller Error Recovery Model C-
  • Identifying Controller Faults C-
    • Automatically Clearing Faults C-
    • Manually Clearing Faults Using the Fault Routine C-
    • Fault Messages. C-
  • Calling Rockwell Automation for Assistance C-

Table of Contents x

P-1 Publication 1764-UM001B-EN-P - April 2002

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-RM001, 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.

Related Documentation The documents listed on page P-2 contain additional information concerning Rockwell Automation products. If you would like a copy, you can:

• download a free electronic version from the internet: www.ab.com/micrologix or www.theautomationbookstore.com
• purchase a printed manual by: - contacting your local distributor or Rockwell Automation representative - visiting www.theautomationbookstore.com and placing your order - calling 1.800.963.9548 (USA/Canada) or 001.330.725.1574 (Outside USA/Canada)

Preface P-

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.

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

Before you contact Rockwell Automation for technical assistance, we suggest you please review the troubleshooting information contained in this publication first.

Preface P-

If the problem persists, call your local Rockwell Automation representative or contact Rockwell Automation in one of the following ways:

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 Automation Control and Information Group Technical Communication, Dept. A602V P.O. Box 2086 Milwaukee, WI 53201-

or visit our internet page at:

http://www.rockwellautomation.com

For the latest information on MicroLogix controllers, visit www.ab.com/micrologix

Phone United States/Canada

1.440.646.

Outside United States/Canada

You can access the phone number for your country via the Internet:

1. Go to http://www.ab.com
2. Click onProduct Support (http://support.automation.rockwell.com)
3. UnderSupport Centers, click onContact Information

Internet ⇒ 1. Go to http://www.ab.com

2. Click onProduct Support (http://support.automation.rockwell.com)

1-2 Hardware Overview

MicroLogix 1500

Component Descriptions

A controller is composed of a 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

Catalog Number

Line Power Inputs Outputs High Speed I/O

1764-24AWA 120/240V ac (12) 120V ac (12) Relay, 2 isolated relays per unit

n/a

1764-24BWA 120/240V ac (8) Standard 24V dc (4) Fast 24V dc

(12) Relay, 2 isolated relays per unit

(4) 20 kHz input

1764-28BXB 24V dc (8) Standard 24V dc (8) Fast 24V dc

(6) Relay, 2 isolated relays per unit (4) Standard 24V dc FET (2) Fast 24V dc FET

(8) 20 kHz input (2) 20 kHz output

Hardware Overview 1-

Processors

Processor (Catalog Number 1764-LSP)

Processor (Catalog Number 1764-LRP)

Data Access Tool (Catalog Number 1764-DAT)

Communications Port

• DTE (male) 9-pin D-shell connector
• 30V dc isolation

1764-DAT mounted on 1764-LSP processor.

Hardware Overview 1-

Programming Programming the MicroLogix 1500 programmable controller is done using RSLogix™ 500, Rev. 4.0 or later. Certain features are only available when using the most current version of the software, as noted in System Requirements for Using Expansion Modules on page 1-7.

The following table lists the firmware release numbers, feature and functionality enhancements, and the required version of RSLogix 500 and RSLogix 500 Starter software.

Table 1.B Required Software Version by FRN Number

Controller Firmware Release

Available for Sale Date

Catalog Number Series

Catalog Number Revision

OS FRN Number

Feature and Functionality Changes

Required Version of RSLogix 500/RSLogix 500 Starter Software

1764-LSP

Initial Release

February 1999

A B 2 Initial Release 3.01.

Enhancement October 1999

A C 3 Power Supply and Expansion Cable Compatibility

3.01.

Series B Release

March 2000

B A 4 String Data File Type, ASCII Instruction Set, Modbus RTU Slave Protocol, Ramping (when using PWM outputs), Static Data File Protection, RTC Messaging

4.00.

Enhancement October 2000

B B 5 PTO Controlled Stop, Memory Module Program Compare Bit Enhancement

4.50.

Series C Release

September 2001

C A 6 Floating Point Data File Support, Programmable Limit Switch (PLS), Real Time Clock Adjust (Copy Word), Absolute Value, Gray Code, Recipe, Message Instruction Support for 1769-SDN

5.10.

1764-LRP

Initial Release

March 2000

B A 4 Initial Release - Same Functionality as 1764-LSP

4.00.

Enhancement October 2000

B B 5 PTO Controlled Stop, Memory Module Program Compare Bit Enhancement

4.50.

Series C Release

September 2001

C A 6 Floating Point Data File Support, Programmable Limit Switch (PLS), Real Time Clock Adjust (Copy Word), Absolute Value, Gray Code, Recipe, Message Instruction Support for 1769-SDN

5.10.

1-6 Hardware Overview

Communication Options The MicroLogix 1500 can be connected to a personal computer. It can also be connected to the DH-485 network using an Advanced Interface Converter (1761-NET-AIC), to an Ethernet network using an Ethernet Interface (1761-NET-ENI), or to a DeviceNet™ network using a DeviceNet Interface (1761-NET-DNI) or through the DeviceNet Scanner module (1769-SDN). The controller can also be connected to Modbus™ SCADA networks as an RTU slave. See Communication Connections on page 4-1 for more information on connecting to the available communication options.

The 1764-LRP processor provides an additional communication port. Each of the communications ports can be independently configured for any supported communication protocol. (Channel 0 is on the base unit and Channel 1 is on the 1764-LRP processor.)

Compact™ Expansion I/O Compact expansion I/O (Bulletin 1769) can be connected to the MicroLogix 1500 Controller. A maximum of either 8 or 16 expansion I/O modules can be used, depending upon your system. See System Requirements for Using Expansion Modules on page 1-7.

See System Loading and Heat Dissipation on page F-1 for more information on system configurations.

End Cap

An end cap terminator (catalog number 1769-ECR or 1769-ECL) must be used at the end of the group of I/O modules attached to the MicroLogix 1500 Controller. The end cap terminator is not provided with the base or processor units. It is required when using expansion I/O.

This illustration shows the right end cap (1769-ECR ). The left end cap (1769-ECL) is shown on page 1-10.