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Spectrum Controls 1769 User Manual

6 channel isolated rtd/resistance input module
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User's Manual Pub. 0300241-01 Rev. A
1769 6 Channel
Isolated RTD/Resistance
Input Module
Catalog Number: 1769sc-IR6I

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  • Page 1 User’s Manual Pub. 0300241-01 Rev. A 1769 6 Channel Isolated RTD/Resistance Input Module Catalog Number: 1769sc-IR6I...

  • Page 2: Important Notes

    No patent liability is assumed by Spectrum Controls with respect to the use of any of the information, products, circuits, programming, or services referenced herein.

  • Page 3: Table Of Contents

    Table of Contents IMPORTANT NOTES ............................... II NOTICE .................................. II LIMITED WARRANTY .............................. II PREFACE ................................VII CHAPTER 1 OVERVIEW ............................1-1 1.1 G ..........................1-1 ECTION ENERAL ESCRIPTION 1.1.1 RTD/Resistance Inputs and Ranges ......................1-2 1.1.2 Data Formats ............................1-2 1.1.3 Filter Frequencies .............................
  • Page 4 Compact™ IO Isolated RTD/Resistance Module 3.7.6 Wiring the Module ..........................3-11 3.8 C ............................3-12 ECTION ALIBRATION CHAPTER 4 MODULE DATA, STATUS, AND CHANNEL CONFIGURATION .............. 4-1 4.1 M ........................... 4-1 ECTION ODULE EMORY 4.2 C ........................... 4-2 ECTION ONFIGURING HANNELS 4.2.1 Configuration Data File ..........................
  • Page 5 -IR6I I RTD/ ..............C-5 ECTION ONFIGURING A SOLATED RESISTANCE ODULE APPENDIX D CONFIGURING THE IR6I TO BE USED WITH A 1769-ADN DEVICENET ADAPTER ......D-1 D.5 C 1769 -IR6I ........................ D-3 ECTION ONFIGURING THE User’s Manual Pub. 0300241-01 Rev. A...
  • Page 6 Compact™ IO Isolated RTD/Resistance Module User’s Manual Pub. 0300241-01 Rev. A...

  • Page 7: Preface

    The table below provides a listing of publications that contain important information about Allen-Bradley PLC systems. Document Title Document Number MicroLogix™ 1500 User Manual 1764-UM001A-US-P 1769 Compact Discrete Input/Output Modules 1769-2.1 Product Data MicroLogix™ 1500 System Overview 1764-SO001B-EN-P Compact™ I/O System Overview...
  • Page 8 viii Compact™ IO Isolated RTD/Resistance Module Conventions Used in This Manual The following conventions are used throughout this manual: • Bulleted lists (like this one) provide information not procedural steps. • Numbered lists provide sequential steps or hierarchical information. • Italic type is used for emphasis •...

  • Page 9: Chapter 1 Overview

    Chapter 1 Overview This chapter describes the 1769sc-IR6I Isolated RTD/Resistance Input Module and explains how the controller reads resistance temperature detector (RTD) or direct resistance-initiated analog input data from the module. Included is: • The module’s hardware and diagnostic features •...

  • Page 10: Rtd/Resistance Inputs And Ranges

    Compact™ IO Isolated RTD/Resistance Module 1.1.1 RTD/Resistance Inputs and Ranges The table below lists the RTD and resistance types and their associated full-scale ranges, supported by the IR6I module. Input Range ˚ Celsius ˚ Fahrenheit Input Type Pt 385 -200 to +850 -328 to 1562 Pt 3916 -200 to +630...

  • Page 11: Hardware Features

    1.1.4 Hardware Features The Isolated RTD/resistance module contains a removable terminal block (spare part number 1769-RTBN18) providing connections for six 3-wire inputs for any combination of RTD and resistance input devices. Channels are wired as differential inputs. The illustration below shows the hardware features of the module.

  • Page 12: General Diagnostic Features

    Compact™ IO Isolated RTD/Resistance Module 1.1.5 General Diagnostic Features The module contains a diagnostic LED that helps you identify the source of problems that may occur during power-up or during normal channel operation. The LED indicates both status and power. Power-up and channel diagnostics are explained in Chapter 5, Diagnostics and Troubleshooting.
  • Page 13 Chapter 1: Module Overview From the readings taken by the converter, the module returns an accurate temperature or resistance to the controller user program through the microprocessor. The module uses two bidirectional serial ports for communication, each using an optocoupler for isolation. A third optocoupler is used to reset the microprocessor if the module detects a loss of communication.
  • Page 14 Compact™ IO Isolated RTD/Resistance Module User’s Manual Pub. 0300241-01 Rev. A...

  • Page 15: Chapter 2 Quick Start For Experienced Users

    Chapter 2 Quick Start for Experienced Users Section 2.1 Before You Begin This chapter can help you to get started using the 1769sc-IR6I Isolated RTD/Resistance Input Module. We base the procedures here on the assumption that you have an understanding of Allen-Bradley controllers. You should understand electronic process control and be able to interpret the ladder logic instructions required to generate the electronic signals that control your application.

  • Page 16: Section 2.3 What You Need T O D O

    Attention The system power supply could be a 1769-PA2, -PB2, -PA4, -PB4, or the internal supply of the MicroLogix 1500 packaged controller. User’s Manual Pub. 0300241-01 Rev. A...
  • Page 17 6) Attach an end cap terminator (5) to the last module in the system by using the tongue-and-groove slots as before. 7) Lock the end cap bus terminator (6). A 1769-ECR or 1769-ECL right or left end cap respectively must be used to terminate the end of the 1769 communication bus. Attention Step 3: Wire the module.
  • Page 18 Compact™ IO Isolated RTD/Resistance Module Follow the guidelines below when wiring the module. General • Power and input wiring must be in accordance with Class 1, Division 2 wiring methods, Article 501-4(b) of the National Electric Code, NFPA 70, and in accordance with the authority having jurisdiction.
  • Page 19 3) Put the controller in Run mode. During a normal start-up, the module status LED turns on. Note: If the module status LED does not turn on, cycle power. If the condition persists, contact your local distributor or Spectrum Controls for assistance. User’s Manual Pub. 0300241-01 Rev. A...
  • Page 20 Compact™ IO Isolated RTD/Resistance Module Step 6: Monitor the module status to Reference Chapter 5(Diagnostics and check if the module is operating Troubleshooting) correctly Module and channel configuration errors are reported to the controller. These errors are typically reported in the controller’s I/O status file. Channel status data is also reported in the module’s input data table, so these bits can be used in your control program to flag a channel error.

  • Page 21: Chapter 3 Installation And Wiring

    Chapter 3 Installation and Wiring This chapter tells you how to: • Determine the power requirements for the modules • Avoid electrostatic damage • Install the module • Wire the module’s terminal block • Wire input devices Section 3.1 Compliance to European Union Directives This product is approved for installation within the European Union and EEA regions.

  • Page 22: Section 3.2 Power Requirements

    Compact™ IO Isolated RTD/Resistance Module Section 3.2 Power Requirements The module receives power through the bus interface from the +5V dc/+24V dc system power supply. The maximum current drawn by the module is shown in the table below. 5V dc 24V dc 190 mA 35 mA...

  • Page 23: Prevent Electrical Discharge

    I/O wiring. Power Supply Distance You can install as many modules as your power supply can support. However, all 1769 I/O modules have a power supply distance ratings. The maximum I/O module rating is 8, User’s Manual Pub. 0300241-01 Rev. A...

  • Page 24: Section 3.4 System Assembly

    Compact™ IO Isolated RTD/Resistance Module which means that a module may not be located more than 8 modules away from the system power supply. Section 3.4 System Assembly The module can be attached to the controller or an adjacent I/O module before or after mounting.

  • Page 25: Section 3.5 Mounting

    7) Attach an end cap terminator (5) to the last module in the system by using the tongue-and-groove slots as before. 8) Lock the end cap bus terminator (6). A 1769-ECR or 1769-ECL right or left end cap respectively must be used to terminate the end of the bus. Attention Section 3.5...

  • Page 26: Panel Mounting

    Compact™ IO Isolated RTD/Resistance Module 3.5.2 Panel Mounting Mount the module to a panel using two screws per module. Use M4 or #8 panhead screws. Mounting screws are required on every module. Panel Mounting Using the Dimensional Template Panel Mounting Procedure Using Modules as a Template The following procedure allows you to use the assembled modules as a template for drilling holes in the panel.

  • Page 27: Din Rail Mounting

    Chapter 3: Installation and Wiring others aside. This reduces remounting time during drilling and tapping of the next group. 7) Repeat steps 1 to 6 for any remaining modules. 3.5.3 DIN Rail Mounting The module can be mounted using the following DIN rails: •...

  • Page 28: System

    Compact™ IO Isolated RTD/Resistance Module Section 3.7 Field Wiring Connections 3.7.1 System Wiring Guidelines Consider the following when wiring your system: General • This product is intended to be mounted to a well-grounded mounting surface such as a metal panel. Additional grounding connections from the module’s mounting tabs or DIN rail (if used) are not required unless the mounting surface cannot be grounded.

  • Page 29: Rtd Wiring Considerations

    Chapter 3: Installation and Wiring • Refer to Industrial Automation Wiring and Grounding Guidelines, Allen- Bradley publication 1770-4.1, for additional information. 3.7.2 RTD Wiring Considerations Since the operating principle of the RTD module is based on the measurement of resistance, take special care when selecting your input cable. For 2-wire or 3-wire configurations, select a cable that has a consistent impedance throughout its entire length.

  • Page 30: Wiring The Finger Safe Terminal Block

    3-10 Compact™ IO Isolated RTD/Resistance Module To remove the terminal block, loosen the upper and lower retaining screws. The terminal block will back away from the module as you remove the screws. Be careful not to damage the CJC sensors. When replacing the terminal block, torque the retaining screws to 0.46 Nm (4.1 in-lbs).

  • Page 31: Wiring The Module

    Chapter 3: Installation and Wiring 3-11 3.7.6 Wiring the Module To prevent shock hazard, care should be taken when wiring the module to analog signal sources. Before wiring any module, disconnect power from the system power supply and from any other source to the module. Attention After the module is properly installed, follow the wiring procedure below, using the Belden 8761 cable.
  • Page 32 3-12 Compact™ IO Isolated RTD/Resistance Module Figure 3-1 (Wiring Diagram) Jumper 3-wire RTD EXC 0 EXC 3 2-Wire RTD Sense 0 Sense 3 RTN 0 RTN 3 EXC 1 EXC 4 Sense 1 Sense 4 RTN 1 RTN 4 4-Wire RTD Jumper EXC 2 Potentiometer...

  • Page 33: Chapter 4 Module Data, Status, And Channel Configuration

    Chapter 4 Module Data, Status, and Channel Configuration After installing the 1769sc-IR6I Isolated RTD/Resistance Input Module, you must configure it for operation, usually using the programming software compatible with the controller (for example, RSLogix 500 or RSLogix 5000). Once configuration is complete and reflected in the ladder logic, you need to operate the module and verify its configuration.

  • Page 34: Section 4.2 Configuring Channels

    For information on configuring the module using RSLogix 500 (with MicroLogix 1500 controller), see Appendix B; for RSLogix 5000 (CompactLogix controller), see Appendix C; for RSNetworx (1769-ADN), see Appendix D. The structure and bit settings are shown in the section below.

  • Page 35: Enabling Or Disabling A Channel (Bit 15)

    Chapter 4: Module, Data, Status, and Channel Configuration Each channel configuration word consists of bit fields, the settings of which determine how the channel operates. See the table below and the descriptions that follow for valid configuration settings and their meanings. Table 4-2 (Channel Configuration) Filter Frequency 4.17 Hz...

  • Page 36: Selecting Data Formats (Bits 12 Through 14)

    Compact™ IO Isolated RTD/Resistance Module 4.2.4 Selecting Data Formats (Bits 12 through 14) This selection configures channels 0 through 5 to present analog data in any of the following formats: • Raw/Proportional Data • Engineering Units x 1 • Engineering Units x 10 •...

  • Page 37: Engineering Units X1

    Chapter 4: Module, Data, Status, and Channel Configuration lowest temperature of -200°C corresponds to -32767 counts. The highest temperature of 850°C corresponds to +32767. Engineering Units x1 When using this data format for a RTD or resistance input, the module scales the RTD or resistance input data to the actual engineering values for the selected RTD or resistance input type.

  • Page 38: Cyclic Lead Compensation (Bit 4)

    Compact™ IO Isolated RTD/Resistance Module Table 4-4 (Open-Circuit Response) Response Definition Option Upscale Sets the input data value to full upper scale value of channel data word. The full-scale value is determined by the selected input type and data format. Downscale Sets the input data value to full lower scale value of channel data word.

  • Page 39: Effects Of Filter Frequency On Noise Rejection

    Chapter 4: Module, Data, Status, and Channel Configuration 19.6 53 msec 208 msec 5 Hz 2x(4.17 Hz 74 dB values) From Appendix 62 Hz 18 msec 68 msec 14 Hz 4x(4.17 Hz values From Appendix 4 msec 10 msec 109 Hz 10x(4.17 Hz values) From Appendix...

  • Page 40: Module Update Time

    Compact™ IO Isolated RTD/Resistance Module Module Update Time The module update time is defined as the total time required for the module to sample and convert the input signals of all enabled input channels and provide the resulting data values to the processor. On an isolated module with one ADC per channel, all channels convert the signal in parallel so the module update time is equal to the slowest channel update time.

  • Page 41: Input Data Values

    (bit set) when the download of a new configuration to a channel is accepted by the module (proper configuration) but before the A/D converter can provide valid (properly configured) data to the 1769 bus master/controller. The following information highlights the bit operation of the Data Not Valid condition.

  • Page 42: Open-Circuit Flag Bits (Oc0 To Oc7)

    4-10 Compact™ IO Isolated RTD/Resistance Module 3) If A/D hardware errors prevent the conversion process from taking place, the bit condition is set (1). 4.4.3 Open-Circuit Flag Bits (OC0 to OC7) Bits OC0 through OC5 of word 6 contain open-circuit error information for channels 0 through 5, respectively.

  • Page 43: Chapter 5 Diagnostics And Troubleshooting

    Chapter 5 Diagnostics and Troubleshooting This chapter describes troubleshooting the isolated RTD/Resistance input module. This chapter contains information on: • Safety considerations while troubleshooting • Internal diagnostics during module operation • Module errors Section 5.1 Safety Considerations Safety considerations are an important element of proper troubleshooting procedures. Actively thinking about the safety of yourself and others, as well as the condition of your equipment, is of primary importance.

  • Page 44: Module Peration Vs . Channel Operation

    The module performs diagnostic operations at both the module level and the channel level. Module-level operations include functions such as power-up, configuration, and communication with a 1769 bus master, such as a MicroLogix 1500 controller, 1769- ADN DeviceNet Adapter, or CompactLogix controller.

  • Page 45: Over Or Under Range Detection

    Chapter 5: Diagnostics and Troubleshooting Whenever a channel configuration word is improperly defined, the module reports an error. See pages 5-3 to 5-5 for a description of module errors. 5.4.2 Over or Under Range Detection Whenever the data received at the channel word is out of the defined operating range, an over-range or under-range error is indicated in input data word 7.

  • Page 46: Table

    Depending upon the value in the module error field, the extended error information field can contain error codes that are module-specific or common to all 1769 analog modules. Note: If no errors are present in the module error field, the extended error information field is set to zero.

  • Page 47: Section 5.7 Error Codes

    Chapter 5: Diagnostics and Troubleshooting If you set the fields in the configuration file to invalid or unsupported values, the module generates a critical error. Table 5-3 Extended Error Codes on page 5-5 lists the possible module-specific configuration error codes defined for the modules. Section 5.7 Error Codes The table below explains the extended error code.

  • Page 48: Section 5.8 Module Inhibit Function

    Some controllers support the module inhibit function. See your controller manual for details. Whenever the 1769sc-IR6I module is inhibited, the module continues to provide information about changes at its inputs to the 1769 CompactBus master (for example, a CompactLogix controller). User’s Manual Pub. 0300241-01 Rev. A...

  • Page 49: Appendix A Specifications

    Appendix A Specifications Specification Description Module ID Codes Vendor ID = 58 (Decimal) Product Type = 10 (Decimal) Product Code = 101 (Decimal) Configuration 6 isolated channels of RTD/resistance inputs Input Modes Temperature or resistance Input Types 100 ohm PT 385 200 ohm PT 385 500 ohm PT 385 1000 ohm PT 385...
  • Page 50 Compact™ IO Isolated RTD/Resistance Module Fast Transient Burst 4 kV (IEC61000-4-4) Surge Immunity 2 kV Line - Line, 4 kV Line - Gnd (IEC61000-4-5) Conducted Immunity 10V, 0.15 to 80 MHz (IEC61000-4-6) Fault detection Open circuit detection, over-range and under-range error bits. Open circuit detection time is equal to the channel update time.
  • Page 51 Appendix A: Specifications Open Circuit Detection Time < 1s Isolation Channel to Rack 500 VDC Maintained, 710 VDC for 1 minute Channel to Channel 500 VDC Maintained, 710 VDC for 1 minute Cable Impedance 25 ohms maximum for specified accuracy, 10 ohms maximum for Copper RTD Input Protection Voltage Mode +/- 35VDC continuous Max Current input is limited due to input impedance...
  • Page 52 Compact™ IO Isolated RTD/Resistance Module User’s Manual Pub. 0300241-01 Rev. A...

  • Page 53: Appendix B Module Configuration Using Micrologix 1500 And Rslogix 500

    Appendix B Module Configuration Using MicroLogix 1500 and RSLogix 500 This appendix examines the 1769sc-IR6I module’s addressing scheme and describes module configuration using RSLogix 500 and a MicroLogix 1500 controller. Section B.1 Module Addressing The following memory map shows the input and configuration image tables for the module.

  • Page 54: 1769Sc-Ir6I Configuration File

    Compact™ IO Isolated RTD/Resistance Module For example, to obtain the general status of channel 2 of the module located in slot e, use address I:e.6/2. Note: The end-cap does not use a slot address. B.1.1 1769sc-IR6I Configuration File The configuration file contains information you use to define the way a specific channel functions.
  • Page 55 Appendix B: Module Configuration Using MicroLogix 1500 and RSLogix 500 Start RSLogix and create a MicroLogix 1500 application. The following screen appears: While offline, double-click on the IO Configuration icon under the controller folder and the following IO Configuration screen appears. This screen allows you to manually enter expansion modules into expansion slots, or to automatically read the configuration of the controller.
  • Page 56 Compact™ IO Isolated RTD/Resistance Module Enter the settings from the table below. Table C-2 (Module ID Codes) Vendor ID Product Type Product Code Series Input Words Output Words Extra Data Length After entering the data from the table above, the screen should look like the one shown below.
  • Page 57 Appendix B: Module Configuration Using MicroLogix 1500 and RSLogix 500 Enter the decimal equivalent of each configuration word. There are a total of 12 words that need to be configured. The module default settings are used if all the configuration words are left at zero.
  • Page 58 Compact™ IO Isolated RTD/Resistance Module User’s Manual Pub. 0300241-01 Rev. A...

  • Page 59: Appendix C Configuring The Ir6I For Compactlogix Controllers In Rslogix 5000

    To configure a 1769sc-IR6I Isolated RTD/resistance module for a CompactLogix Controller using RSLogix 5000 with the 1769 Generic Profile, begin a new project in RSLogix 5000. Click on the new project icon or on the FILE pull-down menu and select NEW.
  • Page 60 New Module, and the following screen appears: This screen is used to narrow your search for I/O modules to configure into your system. From the list select the “Generic 1769 Module”. Click the OK button and the following default Generic Profile screen appears:...
  • Page 61 For this example, the 1769sc-IR6I Isolated RTD/resistance module is located in slot 1. The Comm Format, Assembly Instance and Size values are listed in the following table for the 1769sc-IR6I RTD/resistance module: Table D-1 (Generic Profile Settings) 1769 I/O Comm. Parameter Assembly Size...

  • Page 62: Section C.3 Configuring I/O Modules

    Compact™ IO Isolated RTD/Resistance Module At this point you may click “Finish” to complete the configuration of your I/O module. Configure each I/O module in this manner. Section C.3 Configuring I/O Modules Once you have created a Generic Profile for 1769sc-IR6I Isolated RTD/resistance module, you must enter configuration information into the tag database that is automatically created from the Generic Profile information you entered.

  • Page 63: Odule

    Appendix C: Configuring the IR6I for CompactLogix Controllers in RSLogix 5000 Section C.4 Configuring a 1769sc-IR6I Isolated RTD/resistance Module To configure the 1769sc-IR6I module in slot 1, click on the plus sign left of Local:1:C. Configuration data is entered under the Local:1:C.Data tag. Click the plus sign to the left of Local:1:C.Data to reveal the 13 integer data words where configuration data may be entered for the 1769sc-IR6I module.
  • Page 64 Compact™ IO Isolated RTD/Resistance Module User’s Manual Pub. 0300241-01 Rev. A...

  • Page 65: Appendix D Configuring The Ir6I To Be Used With A 1769-Adn Devicenet Adapter

    DeviceNet Adapter This application example assumes your 1769sc-IR6I isolated RTD/resistance input module is in a remote DeviceNet system controlled by a 1769-ADN DeviceNet adapter. RSNetworx for DeviceNet is not only used to configure your DeviceNet network, but is also used to configure individual I/O modules in remote DeviceNet adapter systems.
  • Page 66 RSNetworx for DeviceNet software is not version 6.00 or later. To continue, you will need to obtain an upgrade for your software. If the 1769-ADN/A does appear, double- click it and it will be placed on the network to the right as shown below.

  • Page 67: Sc -Ir6I

    Configuring the 1769sc-IR6I The 1769-ADN appears in slot 0. Your I/O modules, power supplies, end cap and interconnect cables must be entered in the proper order, following the 1769 I/O rules contained in the 1769-ADN user’s manual. For simplicity sake, we placed the 1769sc- IR6I in slot 1 to show how it is configured.
  • Page 68 Compact™ IO Isolated RTD/Resistance Module click on the first empty slot after the 1769-ADN. From the module list on the left, select the 1769sc-IR6I. The module should appear in the empty slot. Double-click on the 1769sc-IR6I module in slot 1 and the following 1769sc-IR6I configuration screen appears: Enter 1 into the bank field at the bottom of the screen.
  • Page 69 Appendix D: Configuring the IR6I to be Used with a 1769-AND DeviceNet Adapter Click OK and your configuration for the 1769sc-IR6I isolated RTD/resistance input module is complete. Refer to your Compact™ I/O 1769-ADN DeviceNet Adapter user’s manual, publication number 1769-UM001A-US-P, for information concerning DeviceNet network configuration and operation.
  • Page 70 Compact™ IO Isolated RTD/Resistance Module User’s Manual Pub. 0300241-01 Rev. A...
  • Page 71 Index Input Ranges, 1-2 Types, 1-2 Accuracy, A-2 Input Data File, 4-9 Input Filter Selection, 4-6 Calibration, 3-12 Channel Configuration, 4-3 LED, 1-4, 5-1, 5-2 CompactLogix, C-1 Low Voltage Directive, 3-1 Configuration Data File, 4-2 Critical Module Error, 5-3 Cut-Off Frequency, 4-7 Memory Map, 4-1, B-1 MicroLogix 1500, B-1 Minimum Spacing, 3-5...
  • Page 72 RSLogix 5000, C-1 Under Range Status, 4-10 Scaled for PID, 4-5 Under-Range Specifications, A-1 Detection, 5-3 System Assembly, 3-4 Update Time System Operation, 1-4 Channel, 4-6 Terminal Block Wiring Diagram, 3-12 Wiring Finger Safe, 3-10 Wiring the Module, 3-11 User’s Manual Pub. 0300241-01 Rev. A...
  • Page 73 In the unlikely event that the module should need to be returned to Spectrum Controls, please ensure that the unit is enclosed in approved ESD packaging (such as static-shielding / metalized bag or black conductive container).
  • Page 74 ©2009, Spectrum Controls, Inc. All rights reserved. Specifications subject to change without notice. The Encompass logo and ControlLogix are trademarks of Rockwell Automation. Corporate Headquarters Spectrum Controls Inc. P.O. Box 5533 Bellevue, WA 98006 USA Fax: 425-641-9473 Tel: 425-746-9481 Web Site: www.spectrumcontrols.com E-mail: spectrum@spectrumcontrols.com...

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