Rockwell-automation 1771-IR , D17716.5.76 RTD INPUT MODULE Manual de usuario

RTD Input ModuleCat. No. 1771-IR Series BUser Manual

Overview of the RTD Input ModuleChapter 222The processor transfers data to and from the module using block transfer write(BTW) and block transfer re

Overview of the RTD Input ModuleChapter 2237. Your ladder program should allow write block transfers to the module onlywhen enabled by the operator

Chapter 331Installing the RTD Input ModuleThis chapter gives you information on: calculating the chassis power requirement choosing the module’s loc

Installing the RTD Input ModuleChapter 332Your module receives its power through the 1771 I/O chassis backplane fromthe chassis power supply. The max

Installing the RTD Input ModuleChapter 333Figure 3.1Keying Positions for the RTD Input Module24681012141618202224262830323436Keying BandsUpper Connec

Installing the RTD Input ModuleChapter 334Figure 3.2Connection Diagram for RTDs18161412108642CBACBACBACBACBACBA12935RTDGroundChannel 1Channel 2Channe

Installing the RTD Input ModuleChapter 335When using shielded cable, ground the foil shield and drain wire only at oneend of the cable. We recommend

Installing the RTD Input ModuleChapter 3362. Place the module in the plastic tracks on the top and bottom of the slot thatguides the module into pos

Chapter41Module ProgrammingIn this chapter, we describe Block Transfer programming Sample programs in the PLC–2, PLC–3 and PLC–5 processors Module

Module ProgrammingChapter 442Note that PLC–2 processors that do not have the block transfer instruction mustuse the GET–GET block transfer format whi

 1991 Allen-Bradley Company, Inc.PLC is a registered trademark of Allen-Bradley Company, Inc.Because of the variety of uses for this product and beca

Module ProgrammingChapter 443Program ActionRung 1 - Block transfer read buffer: the file–to–file move instructionholds the block transfer read (BTR)

Module ProgrammingChapter 444Block transfer instructions with the PLC–3 processor use one binary file in adata table section for module location and

Module ProgrammingChapter 445After this single block transfer write is performed, the module returns tocontinuous block transfer reads automatically.

Module ProgrammingChapter 446The PLC–5 program is very similar to the PLC–3 program with the followingexceptions: You must use enable bits instead o

Module ProgrammingChapter 447Scan time is defined as the amount of time it takes for the input module to readthe input channels and place new data in

Chapter51Module ConfigurationIn this chapter you will read how to configure your module’s hardware,condition your inputs and enter your data.Because

Module ConfigurationChapter 552You must indicate what format will be used to read data from your module.Typically, BCD is selected with PLC–2 proces

Module ConfigurationChapter 553The real time sampling (RTS) mode of operation provides data from a fixedtime period for use by the processor. RTS is

Module ConfigurationChapter 554The complete configuration block for the block transfer write to the module isdefined in Table 5.C below.Table 5.CCon

Module ConfigurationChapter 555Bit/word descriptions of BTW file words 1 (configuration), 2 (resistance valueof 10 ohm copper RTDs), 3 through 8 (ind

Important User Information I. . . . . . . . . . . . . . . . . . . . . . . . Using This Manual 11. . . . . . . . . . . . . . . . . . . . . . . . .

Module ConfigurationChapter 556Word DescriptionBits1.5 0 1 1 1 1Word 1 (cont.) 2.0 1 0 1 0 02.5 1 1 0 0 13.0 1 1 1 1 0Word 2 If bit 10 is set in word

Chapter 661Module Status and Input DataIn this chapter you will read about: reading data from your module input module read block formatBlock trans

Module Status and Input DataChapter 662Table 6.BBit/Word Description for RTD Input Module (1771-IR Series B)Word Bit DefinitionWord 1 Bits 00-05 Unde

Module Status and Input DataChapter 663Word DefinitionBitWord 9(cont.)Bit 07 Faulty calibration (no save)Bits 10-15 Channel failed calibration. Bit

Chapter71Module CalibrationIn this chapter we tell you how to calibrate your modules.In order to calibrate your input module you will need the follow

Module CalibrationChapter 772Calibration of the module consists of applying 1.00 ohm resistance across eachinput channel for offset calibration, and

Module CalibrationChapter 773Table 7.AWrite Block Transfer Word 15Word Bit17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00Inhibit Calibration on Cha

Module CalibrationChapter 774Figure 7.2Resistor Location for Gain Calibration18161412108642CBACBACBACBACBACBA12935Channel 1Channel 2Channel 3Channel

Module CalibrationChapter 775Save Calibration ValuesIf any ”uncalibrated channel” bits (bits 10–15 of BTR word 9) are set, a savecannot occur. Auto–c

Module CalibrationChapter 776Table 7.CModule Calibration WordsWord/Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 009 S Channel 1 Offset S Channel

Table of ContentsiiChapter Summary 47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Module Configuration 51. . . . . . .

Module CalibrationChapter 777is, you want to subtract 47 counts from your input data. The lower byteremains 00 during offset calibration.5. Repeat ab

Module CalibrationChapter 778You use the values that most nearly add up to the percentage that youdetermined in step 8. For example, to attain the va

Chapter 881TroubleshootingWe describe how to troubleshoot your module by observing LED indicators andby monitoring status bits reported to the proces

TroubleshootingChapter 882Table 8.A shows LED indications and probable causes and recommendedactions to correct common faults.Table 8.ATroubleshootin

TroubleshootingChapter 883Word IndicationBitWord 1 (cont.) 10-15 Data overrange. Bit 15 corresponds to channel 6, bit 14 correspondsto channel 5, and

AppendixAA-1SpecificationsModule Capacity Six RTD input channelsModule Location 1771 I/O ChassisSensor Type 100 ohm platinum (alpha = 0.00385) or 10 o

SpecificationsAppendix AA-2Table A.A1771-IR Series B Error Summary Based on Temperatures above -200oCRTD Type RangeError @ CalibrationTemperature (25o

AppendixB1Programming ExamplesThe following are sample programs for entering data in the configuration wordsof the write block transfer instruction w

Programming ExamplesAppendix BB2In PROG ModeAction Result1. Press [SEARCH]8<data address> Finds the block transfer instruction2. Press CANCEL

Programming ExamplesAppendix BB3Following is a sample procedure for entering data in the configuration words ofthe write block transfer instruction w

Table of Contents iiiData Table Formats C1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-Digit Binary Coded Decimal (BCD) C1. . .

Programming ExamplesAppendix BB43. Enter the data corresponding to your bit selection in word 0.4. When you have entered your data, press [ENTER]. If

Programming ExamplesAppendix BB5Figure B.3Sample PLC-5 Data File (Hexidecimal Data)AddressN7:60N7:703015000005015060150701508000090000401502015000001

AppendixC1Data Table FormatsThe 4–digit BCD format uses an arrangement of 16 binary digits to represent a4–digit decimal number from 0000 to 9999 (fi

Data FormatsAppendix CC2Table C.ABCD Representation Place Value 23 (8) 22 (4) 21 (2)

Data FormatsAppendix CC3Two’s complement binary is used with PLC–3 processors when performingmathematical calculations internal to the processor. To

AppendixDD1Block Transfer (Mini-PLC-2 and PLC-2/20Processors)Programming multiple GET instructions is similar to block format instructionsprogrammed

Block Transfer (Mini-PLC-2 andPLC-2/20 Processors)Appendix DD2Rungs 2 and 3: These output energize instructions (012/01 and 012/02) definethe number

Appendix DBlock Transfer (Mini-PLC-2 andPLC-2/20 Processors)D3Figure D.1Multiple GET Instructions (Mini-PLC-2 and PLC-2/20 Processors Only)Data Table

Block Transfer (Mini-PLC-2 andPLC-2/20 Processors)Appendix DD4The input module transfers a specific number of words in one block length. Thenumber of

10000110Data AddressContains ModuleAddress in BCDOutput Image Table ControlByte Contains ReadEnable Bit and BlockLength in Binary Code0100120170270301

Chapter11Using This ManualThis manual shows you how to use your RTD input module with anAllen–Bradley programmable controller. It helps you install,

AppendixEE12 and 4-Wire RTD SensorsYou can connect 2–wire and 4–wire sensors to the RTD module. Before weshow you how to do this, let’s examine the d

2 and 4-Wire SensorsAppendix EE2Figure E.2Connections for 3 and 4-Wire SensorsCBA3-Wire SensorCBALeave Open4-Wire SensorThere are several ways to ins

2 and 4-Wire SensorsAppendix EE3Figure E.3Connecting a 4-Wire Sensor to the Field Wiring Arm18161412108642CBACBACBACBACBACBARTDGroundChannel 1Channel

AppendixFF1Differences Between Series A and Series BRTD Input ModulesThe following is a list of major changes from Series A to Series B RTD InputModu

Differences between Series A and Series BAppendix FF2 When displaying copper (10mohm/bit resolution) in ohms, the resistancewill be provided up

Differences between Series A and Series BAppendix FF3 If the module is programmed for RTS = 0 and the PLC is switched fromrun to program and b

AAccuracy, 23auto-calibrationgain, 73offset, 72performing, 72saving calibration values, 75BBblock transfer read, BTR wordassignments,

IndexI–2PPower requirements, 32pre-installation considerations, 31programmingusing 6200 software, 51with multiple GETs, D1programming exa

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Using This ManualChapter 112Chapter Topics CoveredTitleAppendix A Specifications Your module's specificationsAppendix B Programming ExamplesAppe

Using This ManualChapter 113Table 1.ACompatibility and Use of Data TableCatalogNumber Use of Data TableInput Output Read

Chapter 22Chapter 21Overview of the RTD Input ModuleThis chapter gives you information on: features of the input module how an input module communi