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1769sc-HART
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Spectrum Controls 1769sc-HART User Manual

User’s Manual 0300217-03 Rev. A
Compact™ I/O Isolated HART Analog Module
Catalog Number: 1769sc-OF4IH
ii
Compact™ IO Isolated HART Analog Output Module
Table of Contents
iii
Table of Contents
CHAPTER1MODULEOVERVIEW.....................................................................................................................1‐1
SECTION1.1GENERALDESCRIPTION.............................................................................................................................1‐1
SECTION1.2DATAFORMATS.......................................................................................................................................1‐1
SECTION1.3HARDWAREFEATURES..............................................................................................................................1‐2
1.3.1GeneralDiagnosticFeatures.....................................................................................................................1‐3
SECTION1.4SYSTEMOVERVIEW..................................................................................................................................1‐3
1.4.1SystemOperation............................................................................................................................... ......1‐3
SECTION1.5MODULEOPERATION...............................................................................................................................1‐4
CHAPTER2QUICKSTARTFOREXPERIENCEDUSERS.........................................................................................2‐1
SECTION2.1BEFOREYOUBEGIN..................................................................................................................................2‐1
SECTION2.2REQUIREDTOOLSANDEQUIPMENT............................................................................................................2‐1
SECTION2.3WHATYOUNEEDTODO..........................................................................................................................2‐1
CHAPTER3INSTALLATIONANDWIRING..........................................................................................................3‐1
SECTION3.1COMPLIANCETOEUROPEANUNIONDIRECTIVES...........................................................................................3‐1
3.1.1EMCDirective............................................................................................................................................3‐1
3.1.2LowVoltageDirective...............................................................................................................................3‐1
3.1.3CESafety...................................................................................................................................................3‐1
SECTION3.2POWERREQUIREMENTS............................................................................................................................ 3‐2
SECTION3.3GENERALCONSIDERATIONS.......................................................................................................................3‐2
3.3.1HazardousLocationConsiderations..........................................................................................................3‐2
3.3.2PreventElectrostaticDischarge................................................................................................................3‐2
3.3.3RemovePower..........................................................................................................................................3‐3
3.3.4SelectingaLocation..................................................................................................................................3‐3
SECTION3.4SYSTEMASSEMBLY...................................................................................................................................3‐4
SECTION3.5MOUNTING.............................................................................................................................................3‐5
3.5.1MinimumSpacing.....................................................................................................................................3‐5
3.5.2PanelMounting........................................................................................................................................3‐6
3.5.3DINRailMounting....................................................................................................................................3‐7
SECTION3.6REPLACINGASINGLEMODULEWITHINASYSTEM..........................................................................................3‐7
SECTION3.7FIELDWIRINGCONNECTIONS&SYSTEMWIRINGGUIDELINES........................................................................3‐7
3.7.2TerminalDoorLabel..................................................................................................................................3‐8
3.7.3RemovingandReplacingtheTerminalBlock............................................................................................3‐8
3.7.4WiringtheFinger‐SafeTerminalBlock.....................................................................................................3‐9
3.7.5WiringtheModule....................................................................................................................................3‐9
1.1.6WiringDiagram......................................................................................................................................3‐10
3.7.7Calibration..............................................................................................................................................3‐10
CHAPTER4CONFIGURINGTHEOF4IHFORCOMPACTLOGIXUSINGRSLOGIX5000...........................................4‐1
SECTION4.1SETTINGUPTHEGENERICPROFILE..............................................................................................................4‐1
SECTION4.2USINGTHEADD‐ONPROFILE.....................................................................................................................4‐5
4.2.1InstallingtheAdd‐Onprofile.....................................................................................................................4‐5
4.2.2AddingtheOF4IHModuleToYourLogixProject......................................................................................4‐6
SECTION4.3USERDEFINEDDATATYPES.......................................................................................................................4‐7
SECTION4.4PROJECTTAGS.........................................................................................................................................4‐8
SECTION4.5SAMPLEPROJECTLADDER........................................................................................................................4‐12
CHAPTER5CONFIGURINGTHEOF4IHFORAMICROLOGIX1500USINGRSLOGIX500......................................5‐1
iv
Compact™ IO Isolated HART Analog Output Module
ECTION5.1MODULEADDRESSING..............................................................................................................................5‐1
S
SECTION5.2CONFIGURINGTHE1769SC‐OF4IHINAMICROLOGIX1500SYSTEM..............................................................5‐2
SECTION5.3USINGTHELADDERSAMPLE.......................................................................................................................5‐6
5.3.1CopyingSubroutinesfromtheSampleProject..........................................................................................5‐6
5.3.2CopyingLadderfromtheSampleProject..................................................................................................5‐7
5.3.3ImportingTagDatabaseandRungComments.........................................................................................5‐8
CHAPTER6MODULEDATA,STATUS,ANDCHANNELCONFIGURATION............................................................6‐1
SECTION6.1MODULEMEMORYMAP...........................................................................................................................6‐1
SECTION6.2ACCESSINGINPUTIMAGEFILEDATA............................................................................................................6‐2
SECTION6.3INPUTDATAFILE......................................................................................................................................6‐2
6.3.1GeneralStatusBitsS0toS3(Word0).......................................................................................................6‐2
6.3.2OutofServiceStatusBitsOS0toOS3(Word0)........................................................................................6‐2
6.3.3Over‐RangeFlagBitsO0toO3(Word1)..................................................................................................6‐2
6.3.4Under‐RangeFlagBitsU0toU3(Word1)................................................................................................6‐3
6.3.5HoldLastStateBitsH0toH3(Word1).....................................................................................................6‐3
6.3.6ChannelXCommandValueEcho(Words2to5)......................................................................................6‐3
6.3.7HARTPacketData(Words6to25)...........................................................................................................6‐3
6.3.8MessageSlaveControl(Word26).............................................................................................................6‐3
6.3.9MessageReplySize(Word27)..................................................................................................................6‐3
6.3.10MessageReplyBuffer(Words28…47)....................................................................................................6‐3
6.3.11Reserved(Words48…69)........................................................................................................................6‐3
MODULECONFIGURATION............................................................................................................................... ............6‐4
6.3.12ChannelXGeneralSettings(Words0,8,16,24)....................................................................................6‐5
6.3.13ChannelXOutputTypeandDataFormat(Words1,9,17,25)..............................................................6‐7
6.3.14FaultValue(Words2,10,18,26)...........................................................................................................6‐8
6.3.15Program/IdleValue(Words3,11,19,27)..............................................................................................6‐8
6.3.16LowClampValue(Words4,12,20,28)..................................................................................................6‐9
6.3.17HighClampValue(Words5,13,21,29).................................................................................................6‐9
6.3.18RampRateValue(Words6,14,22,30)..................................................................................................6‐9
6.3.19Spare(Words7,15,23,31)..................................................................................................................6‐10
6.3.20Pad(Word32).......................................................................................................................................6‐10
6.3.21HARTConfigurationWord(Word33)...................................................................................................6‐10
6.3.22ChannelXHARTSlotVariables0&1(Words34,36,38,40)................................................................6‐11
6.3.23ChannelXHARTSlotVariables2&3(Words35,37,39,41)................................................................6‐11
SECTION6.4OUTPUTDATAFILE.................................................................................................................................6‐11
6.4.1ChannelXCommandValue.....................................................................................................................6‐11
6.4.2UnlatchProcessHighAlarmsUH0toUH3(Word4)...............................................................................6‐11
6.4.3UnlatchProcessLowAlarmsUL0toUL3(Word4).................................................................................6‐12
6.4.4HartSuspendHS0toHS3(Word4).........................................................................................................6‐12
6.4.5PacketJustScanned(Word5).................................................................................................................6‐12
6.4.6MessageMasterControl(Word6).........................................................................................................6‐12
6.4.7MessageRequestSize(Word7)..............................................................................................................6‐12
6.4.8MessageRequestBuffer(Words8…27)..................................................................................................6‐12
6.4.9Reserved(Words28…49)........................................................................................................................6‐13
SECTION6.5DETERMININGMODULEUPDATETIME......................................................................................................6‐13
6.5.1ModuleUpdateTime..............................................................................................................................6‐13
CHAPTER7ENABLINGANDUSINGHARTONTHE1769SC‐OF4IH......................................................................7‐1
SECTION7.1CONFIGURINGTHEMODULEFORHART....................................................................................................... 7‐1
7.1.1ConfiguringtheOF4IHModulefor(HartAcquisition/Communication)....................................................7‐1
SECTION7.2HARTPACKETDATA.................................................................................................................................7‐2
7.2.1HowtheModuleConnectstoaFieldDevice.............................................................................................7‐2
Table of Contents
v
7.2.2AutoAcquisition........................................................................................................................................7‐3
7.2.3PacketInterval........................................................................................................................................7‐10
SECTION7.3SENDINGANDRECEIVINGMESSAGES..........................................................................................................7‐11
7.3.1ModuleOutputTagsUsedForMessaging..............................................................................................7‐11
7.3.2ModuleInputTagsUsedForMessaging.................................................................................................7‐12
7.3.3ProcessingaMessage.............................................................................................................................7‐13
SECTION7.4MODULESPECIFICCOMMANDS................................................................................................................7‐28
7.4.1GetHARTDeviceInformation.................................................................................................................7‐28
7.4.2HARTPass‐ThroughCommand...............................................................................................................7‐30
SECTION7.5HARTPROTOCOLOVERVIEW...................................................................................................................7‐41
7.5.1MessageFormat.....................................................................................................................................7‐41
7.5.2SendingaHARTCommandtoaFieldDeviceviaPass‐through..............................................................7‐43
CHAPTER8PROGRAMMINGEXAMPLES..........................................................................................................8‐1
SECTION8.1COMPACTLOGIX.......................................................................................................................................8‐1
8.1.1Reset/Reconfig..........................................................................................................................................8‐1
8.1.3SwapByteOrder.......................................................................................................................................8‐3
8.1.4ConvertingUnpackedASCIItoPackedASCII.............................................................................................8‐3
SECTION8.2MICROLOGIX1500............................................................................................................................... ...8‐6
8.2.1MAINRoutine............................................................................................................................................8‐7
8.2.2PACKETSRoutine.......................................................................................................................................8‐8
8.2.3MSG_TO_MODRoutine..........................................................................................................................8‐11
8.2.4SRC_CHECKRoutine................................................................................................................................8‐28
8.2.5DEST_CHECKSUMRoutine......................................................................................................................8‐30
8.2.6HART_MSGRoutine................................................................................................................................8‐32
8.2.7WORD_BYTERoutine..............................................................................................................................8‐43
8.2.8HART_CHECKRoutine.............................................................................................................................8‐46
8.2.9BYTE_WORDRoutine..............................................................................................................................8‐48
CHAPTER9DIAGNOSTICSANDTROUBLESHOOTING........................................................................................9‐1
SECTION9.1SAFETYCONSIDERATIONS..........................................................................................................................9‐1
9.1.1IndicatorLights.........................................................................................................................................9‐1
9.1.2StandClearofEquipment.........................................................................................................................9‐1
9.1.3ProgramAlteration...................................................................................................................................9‐1
9.1.4SafetyCircuits...........................................................................................................................................9‐1
SECTION9.2MODULEOPERATIONVS.CHANNELOPERATION...........................................................................................9‐2
SECTION9.3POWER‐UPDIAGNOSTICS..........................................................................................................................9‐2
SECTION9.4CHANNELDIAGNOSTICS............................................................................................................................9‐2
9.4.1InvalidChannelConfigurationDetection..................................................................................................9‐2
9.4.2OverorUnder‐RangeDetection................................................................................................................9‐3
SECTION9.5NON‐CRITICALVS.CRITICALMODULEERRORS..............................................................................................9‐3
SECTION9.6MODULEERRORDEFINITIONTABLE.............................................................................................................9‐3
9.6.1ModuleErrorField....................................................................................................................................9‐3
9.6.2ExtendedErrorInformationField..............................................................................................................9‐4
SECTION9.7ERRORCODES............................................................................................................................... ...........9‐5
SECTION9.8MODULEINHIBITFUNCTION......................................................................................................................9‐5
APPENDIXAMODULESPECIFICATIONS............................................................................................................A‐1
ELECTRICALSPECIFICATIONS............................................................................................................................... ..........A‐1
ENVIRONMENTALSPECIFICATIONS.................................................................................................................................A‐2
REGULATORYCOMPLIANCE............................................................................................................................... ...........A‐2
APPENDIXBHARTUNIVERSALANDCOMMONPRACTICECOMMANDS............................................................B‐1
vi
Compact™ IO Isolated HART Analog Output Module
Who Should Use This Manual
How to Use This Manual
vii
Preface
Read this preface to familiarize yourself with the rest of the manual. This preface covers the following topics:
Who should use this manual How to use this manual Related publications Conventions used in this manual Rockwell Automation support
Use this manual if you are responsible for designing, installing, programming, or troubleshooting control systems that use Allen-Bradley Compact™ I/O and/or compatible controllers, such as MicroLogix 1500 or CompactLogix.
As much as possible, we organized this manual to explain, in a task-by-task manner, how to install, configure, program, operate and troubleshoot a control system using the 1769sc-OF4IH.
Related Documentation
The table below provides a listing of publications that contain important information about MicroLogix 1500 systems.
Document Title Document Number
MicroLogix™ 1500 User Manual 1764-UM001A-US-P 1769 Compact Discrete Input/Output Modules Product Data MicroLogix™ 1500 System Overview 1764-SO001B-EN-P Compact™ I/O System Overview 1769-SO001A-EN-P CompactLogix User Manual 1769-UM007B-EN-P Allen-Bradley Programmable Controller Grounding and Wiring Guidelines
If you would like a manual, you can: Download a free electronic version from the internet at
www.theautomationbookstore.com
Purchase a printed manual by:
o Contacting your local distributor or Rockwell Automation r ep resentative o Visiting www.theautomationbookstore.com and placing your order o Calling 1.800.963.9548 ( US A/Canada) or 001.330.725.1574 (Outside
USA/Canada)
1769-2.1
1770-4.1
viii
Compact IO™ Isolated HART Analog Output 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 Bold type identifies headings and sub-headings
!
Attention
Are used to identify critical information to the reader
User’s Manual 0300217-03 Rev. A
Section 1.1 General Description
Chapter 1 Module Overview
This chapter describes the 1769sc-OF4IH isolated HART analog output module. The module provides four isolated current outputs with HART communication.
Included is information about:
The module’s hardware and diagnostic features An overview of the system and module operation Compatibility
The OF4IH is a four channel isolated module that allows each channel to be configured independently for either 0 to 20mA or 4 to 20mA with or without HART communication. The module converts the digital value stored in each channel’s output command word (i.e. output words 0 to 3) to an analog current signal. If HART is enabled on a specific channel, the user also has the ability to send and receive HART communication to and from the connected HART device. HART data is sent and received using the module’s input and output image table. Over-range/under-range detection and indication is also provided by the module for each channel..
The table below lists the output ranges for the module.
Table 1-1
Curre nt Output Types
0 to 20mA 4mA to 20mA
Section 1.2 Data Formats
The data format can be configured for:
Engineering units Scaled-for-PID Percent of full-scale Raw/proportional data
Compact™ IO Isolated HART Analog Output Module
1-2
Section 1.3 Hardware Features
The module contains a removable terminal block. Each channel has a dedicated ground which is isolated from the remaining channels by 500VDC.
Do not short the channel grounds together unless you plan to remove the
!
Attention
Module configuration is done via the controller’s programming software. In addition, some controllers support configuration via the user program. In either case, the module configuration is stored in the memory of the controller. Refer to your controller’s user manual for more information. The illustration below shows the module’s hardware features.
Figure 1-1
channel to channel isolation.
8a
1
OK
HART
10a
2a
DANGE R
Do Not Remove RTB Under Power Unless Area is Non­Hazardous
7a
3
OK
HART
7a
5a
9
10
10b
Ensure Adjacent Bus Lever is Unlatche d/ Latched Before/After Removing/Inserting Module
2b
4
7b
7b
8b
Item Description
1 bus lever 2a upper panel mounting tab 2b lower panel mounting tab 3 module status LED 4 module door with terminal identification label 5a movable bus connector (bus interface) with femal e pins 5b stat ionary bus connector (bus interface) with male pins 6 nameplate label 7a upper tongue-and-groove slots 7b lowe r to n gue-and-groove slots 8a upper DIN rail latch 8b lower DIN rail latch
5b
6
Chapter 1: Module Overview
9 write-on label for user identification tags 10 removable terminal block (RTB) with finger-safe cover 10a RTB upper retaining screw 10b RTB lower retaining screw
1.3.1 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 9 Diagnostics and Troubleshooting.
Section 1.4 System Overview
The modules communicate to the controller through the bus interface. The modules also receive 5 and 24V dc power through the bus interface.
1.4.1 System Operation
At power-up, the module performs a check of its internal circuits, memory, and basic functions. During this time, the module status LED remains off. If no faults are found during power-up diagnostics, the module status LED is turned on.
After power-up checks are complete, the module waits for valid channel configuration data. If an invalid configuration is detected, the module generates a configuration error. Once a channel is properly configured and enabled, it continuously converts the output command value (i.e. output words 0 to 3) to a proportional analog signal that is within the output range selected for that channel.
Each time a channel command value is read by the output module, that data value is tested by the module for an over-range or under-range condition. If such a condition is detected, a unique bit is set in the channel status word. The channel status word is described in Section 6.3 Input Data File.
Using the module image table, the controller reads the two’s complement binary converted input data from the module. This typically occurs at the end of the program scan or when commanded by the control program. If the controller and the module determine that the data transfer has been made without error, the data is used in the control program.
1-3
Compact™ IO Isolated HART Analog Output Module
1-4
Section 1.5 Module Operation
When the module receives a new command value from the output image, the module’s circuitry converts the digital value to an analog current signal using a DAC (Digital to Analog Converter). The resulting signal is made available for the specific channel via the removable terminal block. If HART is enabled on a channel, the HART data is acquired my means of an onboard HART modem.
Note: The HART data is sent and received asynchronously from the analog acquisition process and therefore does not directly affect the analog update time.
See the block diagram below.
Figure 1-2
MERCURY
ASIC
500 VDC ISOLATION
OUTPUT CIRCUIT x4
BACKPLANE CONNECTOR
CPU
64K Flash/
2K RAM
V TO
24
12V
POWER SUPPLY
HART
MODEM
OPTOS
OPTOS
OPTOS
OPTOS
ISOLATED +/-15V
ISOLATED +/-15V
SUPPLY
ISOLATED +/-15V
SUPPLY
ISOLATED +
SUPPLY
SUPPLY
16 BIT
-15V
DA
16 BIT
DA
C
16 BIT
16 BIT
C
C
DAC
DA
-
+
-
+15
VOUT
+
-
+15
V
VOUT
+
+15
V
VOUT
+15
V
GND
V
GND
GND
GND
IOUT
IOUT
IOUT
IOUT
BLOCK
The module is designed to support up to 4 isolated channels which can be independently configured for current, or current with HART.
The HART data, if enabled, is converted directly to a block of twenty controller input tags. The data within this block of twenty tags is multiplexed. For information on HART and how to demultiplex the HART data, refer to Chapter 7.
TERMINAL
RET
Section 2.1 Before You Begin
Chapter 2 Quick Start for Experienced Users
This chapter can help you get started using the 1769sc-OF4IH isolated HART analog output 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.
Because it is a start-up guide for experienced users, this chapter does not contain detailed explanations about the procedures listed. It does, however, reference other chapters in this book where you can get more information about applying the procedures described in each step.
If you have any questions or are unfamiliar with the terms used or concepts presented in the procedural steps, always read the referenced chapters and other recommended documentation before trying to apply the information.
Section 2.2 Required Tools and Equipment
Section 2.3 What You Need To Do
Have the following tools and equipment ready:
Medium blade or cross-head screwdriver Analog output device Shielded, twisted-pair cable for wiring (Bel den ™ 8 76 1 o r equivalent for current
outputs)
Controller (for example, a MicroLogix™ 1500 or CompactLogix™ controller) Programming device and software (for example, RSLogix 500™ or RSLogix
5000™)
This chapter covers:
1. Ensuring that your power supply is adequate
2. Attaching and locking the module
3. Wiring the module
4. Configuring the module
5. Going through the startup procedure
6. Monitoring module operation
2-2
Compact IO™ Isolated HART Analog Output Module
Step 1: Ensure that your 1769 system power supply
1
has sufficient current output to support your system configuration. Reference
Chapter 3 (Installation and Wiring)
The modules maximum current draw is shown below: 5V dc 24V dc 180 mA 200 mA
NOTE: The module cannot be located more than 8 modules away from the system power supply.
Step 2: Attach and lock the module. Reference
Chapter 3 (Installation and Wiring)
Remove power before removing or inserting this module. If you remove or insert a module with power applied an electrical arc may occur.
NOTE: The module can be panel or DIN rail mounted. Modules can be asse mbl e d before or after mounting.
Remove power before removing or inserting this module. If you
!
Attention
remove or insert a module with power applied an electrical arc may occur.
1. Check that the bus lever of the module to be installed is in the unlocked (fully right)
position.
2. Use the upper and lower tongue-and-groove slots (1) to secure the modules together
(or to a controller).
3. Move the module back along the tongue-and-groove slots until the bus connectors
(2) line up with each other.
4. Push the bus lever back slightly to clear the positioning tab (3). Use your fingers or a
small screwdriver.
1
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 0300217-03 Rev. A
Chapter 2: Quick Start For Experienced Users
5. To allow communication between the controller and module, move the bus lever
fully to the left (4) until it clicks. Ensure it is locked firmly in place.
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).
When attaching I/O modules it is very important that the bus connectors
!
Attention
!
Attention
Step 3: Wire the module. Reference
Follow the guidelines below when wiring the module.
General
Power and output wiring must be in accordance wit h Class 1, Di vi sion 2 wiring
Channels are isolated from one another by ±500V dc maximum. Route field wiring away from any other wiring and keep it as far as possible from
Routing field wiring in a grounded conduit can reduce electrical noise. If field wiring must cross ac or power cables, ensure that they cross at right angles.
are securely locked together to ensure proper electrical connection.
A 1769-ECR or 1769-ECL right or left end cap respectively must be used to terminate the end of the 1769 communication bus.
Chapter 3 (Installation and Wiring)
methods, Article 501-4(b) of the National Electric Code, NFPA 70, and in accordance with the authority having jurisdiction.
sources of electrical noise, such as motors, transformers, contactors, and ac devices. As a general rule, allow at least 15.2 cm (6 in.) of separation for every 120V of power.
2-3
Terminal Block
For current output devices, use Belden 8761 shielded, twisted-pair wire (or
equivalent) to ensure proper operation and high immunity to electrical noise.
To ensure optimum accuracy, limit overall cable impedance by keeping a cable as
short as possible. Locate the module as close to input devices as the application permits.
Grounding
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.
Keep cable shield connections to ground as short as possible. Ground the shield drain wire at one end only. The preferred location is as follows. Refer to Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley
publication 1770-4.1, for additional information.
2-4
Compact IO™ Isolated HART Analog Output Module
The terminal block layout is shown below:
Figure 2-1
N/C
I Out 0+
N/C
I Out 1+
N/C
I Out 2+
N/C
I Out 3+
N/C
N/C I Out 0­N/C I Out 1­N/C I Out 2­N/C I Out 3­N/C
Step 4: Configure the module for the
Reference
proper controller.
Chapter 4 (Configuring the OF4IH for
CompactLogix Using RSLogix 5000) or Chapter 5 (Configuring the OF4IH for a MicroLogix 1500 Using RSLogix 500)
Step 5: Configure the module. Reference
Chapter 6 (Module Data, Status, and
Channel Configuration)
The configuration file is typically modified using the programming software compatible with your controller. It can also be modified through the control progr am, if supported by the controller. See 0 Module Configuration Configuration for more information.
Step 6: Go through the startup procedure. Reference
Chapter 9 (Diagnostics and
Troubleshooting)
1. Apply power to the controller system.
2. Download your program, which contains the Isolated HART module configuration
settings, to the controller.
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 0300217-03 Rev. A
Chapter 2: Quick Start For Experienced Users
Step 7: Monitor the module status to check if the module is operating correctly Reference
Chapter 9 (Diagnostics and
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.
Troubleshooting)
2-5
2-6
Compact IO™ Isolated HART Analog Output Module
User’s Manual 0300217-03 Rev. A
Section 3.1 Compliance to European Union Directives
Chapter 3 Installation and Wiring
This chapter explains how to:
Determine the power requirements for the module Avoid electrostatic damage Install the module Wire the module’s terminal block Wire output devices
This product is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives.
3.1.1 EMC Directive
The 1769sc-OF4IH module 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 50081-2 EMC – Generic Emission Standard, Part 2 - I nd ustri al En vi r onment EN 50082-2 EMC – Generic Immunity Standar d, Part 2 - I nd ustri al E n vironment
This product is intended for use in an industrial environment.
3.1.2 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 EN61131-2, 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
Automation Systems Catalog, publication B113
3.1.3 CE Safety
This product is designed to, and verified compliance with, European Union Safety Standards:
EN61131-2 EN61010-1
3-2
Compact IO™ Isolated HART Analog Output 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.
Module Current Draw at 5V dc at 24V dc 180 mA 200 mA
Section 3.3 General Considerations
Compact I/O is suitable for use in an industrial environment when installed in accordance with these instructions. Specifically, this equipment is intended for use in clean, dry environments (Pollution degree 2
2
II
(IEC 60664-1)3
1
and to circuits not exceeding Over Voltage Category
3.3.1 Hazardous Location Considerations
This equipment is suitable for use in Class I, Division 2, Groups A, B, C, D or non­hazardous locations only. The following WARNING statement applies to use in hazardous locations.
EXPLOSION HAZARD
!
Attention
Substitution of components may impair suitability for Class I,
Division2.
Do not replace components or disconnect equipment unless
power has been switched off or the area is known to be non­hazardous.
Do not connect or disconnect components unless power has
been switched off or t he area is known to be non-hazardous.
This product must be installed in an enclosure. All wiring must comply with N.E.C. article 501-4( b).
3.3.2 Prevent Electrostatic Discharge
Electrostatic discharge can damage integrated circuits or
!
Attention
1
Pollution Degree 2 is an environment where, normally, only non-conductive pollution occurs except that
occasionally a temporary conductivity caused by condensation shall be expected.
2
Over Voltage Category II is the load level section of the electrical distribution system. At this level transient
voltages are controlled and do not exceed the impulse voltage capability of the product’s insulation.
3
Pollution Degree 2 and Over Voltage Category II are International Electrotechnical Commission (IEC)
designations.
User’s Manual 0300217-03 Rev. A
semiconductors if you touch analog I/O module bus connector pins or the terminal block on the output module. 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 bus connector or connector pins. Do not touch circuit components inside the module. If available, use a static-safe work station. When it is not in use, keep the module in its static-shield bag.
Chapter 3: Installation and Wiring
3-3
3.3.3 Remove Power
Remove power before removing or inserting this module. When you
!
Attention
remove or insert a module with power applied, an electrical arc may occur. An electrical arc can cause personal injury or property damage by:
Sending an erroneous signal to your system’s field devices,
causing unintended machine motion
Causing an explosion in a ha zardous environment Electrical arcing causes excessive wear to contacts on both the
module and its mating connector and may lead to premature failure.
3.3.4 Selecting a Location
Reducing Noise
Most applications require installation in an industrial enclosure to reduce the effects of electrical interference. Analog outputs are highly susceptible to electrical noise. Electrical noise coupled to the analog outputs will reduce the performance (accuracy) of the module.
Group your modules to minimize adverse effects from radiated electrical noise. Consider the following conditions when selecting a location for the analog modu le. Position the module: Away from sources of electrical noise such as hard-contact switches, relays, and AC
motor drives
Away from high voltage conductors In addition, route shielded, twisted-pair analog input wiring away from any high voltage
I/O wiring.
Reducing Heat
To avoid complications when operating in ambient temperatures in excess of 55 degrees C, the following recommendations should be followed. Position the module:
Away from heat sources such as transformers, variable frequency drives, and cabinet
heaters.
Avoid installing the module adjacent to modules which generate over 4 W of heat,
such as the 1769-HSC. The table below lists modules which should be avoided if possible:
Table 3-1 (Modules To Avoid) Module Catalog Max Thermal Dissipation
1769-ADN 4.7 1769-HSC 6.2 1769-IQ32 4.8 1769-OW16 4.8 1769-OB32 4.5
3-4
Compact IO™ Isolated HART Analog Output Module
If the OF4IH is to be installed adjacent to one of the modules listed in
!
Attention
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 rating. The maximum I/O module rating is 8, which means that a module may not be located more than 8 modules away from the system power supply.
Figure 3-1
the table above and the ambient temperature is in excess of 55°C, then derating of the module is required to avoid thermal shutdown. Assume the thermal dissipation of the OF4IH to be 2W fixed plus an additional
0.5W per channel. For example, if the OF4IH is to be installed adjacent to the 1769-HSC, no more than 2 channels should be used on the OF4IH.
Section 3.4 System Assembly
The module can be attached to the controller or an adjacent I/O module before or after mounting. For mounting instructions, see Panel Mounting Using the Dimensional Template, or DIN Rail Mounting. To work with a system that is already mounted, see Replacing a Single Module within a System.
The following procedure shows you how to assemble the Compact I/O system.
User’s Manual 0300217-03 Rev. A
Figure 3-2
Chapter 3: Installation and Wiring
3-5
1. Disconnect power.
2. Check that the bus lever of the module to be installed is in the unlocked (fully right)
position.
NOTE: If the module is being installed to the left of an existing module, check that the right-side adjacent module’s bus lever is in the unlocked (fully right) position.
3. Use the upper and lower tongue-and-groove slots (1) to secure the modules together
(or to a controller).
4. Move the module back along the tongue-and-groove slots until the bus connectors
(2) line up with each other.
5. Push the bus lever back slightly to clear the positioning tab (3). Use your fingers or a
small screwdriver.
6. To allow communication between the controller and module, move the bus lever
fully to the left (4) until it clicks. Ensure it is locked firmly in place.
When attaching I/O modules, it is very imp ortant that the bus
!
Attention
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).
!
Attention
connectors are securely locked together to ensure proper electrical connection.
A 1769-ECR or 1769-ECL right or left end cap respectively must be used to terminate the end of the bus.
Section 3.5 Mounting
!
Attention
3.5.1 Minimum Spacing
Maintain spacing from enclosure walls, wireways, adjacent equipment, etc. Allow 50 mm (2 in.) of space on all sides for adequate ventilation, as shown below:
During panel or DIN rail mounting of all devices, be sure that all
debris (metal chips, wire strands, etc.) is kept from falling into the
module. Debris that falls into the module could cause damage at
power up.
3-6
Compact IO™ Isolated HART Analog Output Module
Figure 3-3
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
Figure 3-4
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. If you have sophisticated panel mounting equipment, you can use the dimensional template provided on the previous page. Due to module mounting hole tolerance, it is important to follow these procedures:
1. On a clean work surface, assemble no more than three modules.
User’s Manual 0300217-03 Rev. A
Section 3.6 Replacing a Single Module within a System
Chapter 3: Installation and Wiring
2. Using the assembled modules as a template, carefully mark the center of all module-
mounting holes on the panel.
3. Return the assembled modules to the clean work surface, including any previously
mounted modules.
4. Drill and tap the mounting holes for the recommended M4 or #8 screw.
5. Place the modules back on the panel, and check for proper hole alignment.
6. Attach the modules to the panel using the mounting screws.
NOTE If mounting more modu les, mount only the last one of this group and put the others aside. This reduces remounting time during drilling and tapping of the next group.
7. Repeat steps 1 to 6 for any remaining modules.
3-7
3.5.3 DIN Rail Mounting
The module can be mounted using the following DIN rails:
35 x 7.5 mm (EN 50 022 - 35 x 7.5), or 35 x 15 mm (EN 50 022 - 35 x 15).
Before mounting the module on a DIN rail, close the DIN rail latches. Press the DIN rail mounting area of the module against the DIN rail. The latches will momentarily open and lock into place.
The module can be replaced while the system is mounted to a panel (or DIN rail). Follow these steps in order:
1. Remove power. See important note at the beginning of this chapter.
2. On the module to be removed, remove the upper and lower mounting screws from
the module (or open the DIN latches using a flat-blade or phillips-style screwdriver).
3. Move the bus lever to the right to disconnect (unlock) the bus.
4. On the right-side adjacent module, move its bus lever to the right (unlock) to
disconnect it from the module to be removed.
5. Gently slide the disconnected module forward. If you feel excessive resistance,
check that the module has been disconnected from the bus, and that both mounting screws have been removed (or DIN latches opened).
NOTE: It may be necessary to rock the module slightly from front to back to remove it, or, in a panel-mounted system, to loosen the screws of adjacent modules.
6. Before installing the replacement module, be sure that the bus lever on the module to
be installed and on the right-side adjacent module or end cap are in the unlocked (fully right) position.
7. Slide the replacement module into the open slot.
8. Connect the modules together by locking (fully left) the bus levers on the
replacement module and the right-side adjacent module.
9. Replace the mounting screws (or snap the module onto the DIN rail).
Section 3.7 Field Wiring Connections & System Wiring Guidelines
Consider the following when wiring your system:
3-8
Compact IO™ Isolated HART Analog Output Module
General
Power and output wiring must be in accordance wit h Class 1, Di vi sion 2 wiring
methods, Article 501-4(b) of the National Electric Code, NFPA 70, and in accordance with the authority having jurisdiction.
Channels are isolated from one another by ±500 Vdc maximum. Route field wiring away from any other wiring and as far as possible from sources of
electrical noise, such as motors, transformers, contactors, and ac devices. As a general rule, allow at least 15.2 cm (6 in.) of separation for every 120V of power.
Routing field wiring in a grounded conduit can reduce electrical noise. If field wiring must cross ac or power cables, ensure that they cross at right angles. If multiple power supplies are used with analog millivolt inputs, the power supply
commons must be connected.
Terminal Block
For voltage and current sensors, use Belden 8761 shielded, twisted-pair wire (or
equivalent) to ensure proper operation and high immunity to electrical noise.
To ensure optimum accuracy, limit overall cable impedance by keeping a cable as
short as possible. Locate the module as close to input devices as the application permits.
Grounding
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.
Keep cable shield connections to ground as short as possible. Ground the shield drain wire at one end only. The typical location is as follows. If it is necessary to connect the shield drain wire at the module end, connect it to
earth ground using a panel or DIN rail mounting screw.
Refer to Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley
publication 1770-4.1, for additional information.
Noise Prevention
To limit the pickup of electrical noise, keep analog signal wires as far as possible
from power and load lines.
If noise persists for a device, try grounding the opposite end of the cable shield. (You
should only ground one end at a time.)
3.7.2 Terminal Door Label
A removable, write-on label is provided with the module. Remove the label from the door, mark your unique identification of each terminal with permanent ink, and slide the label back into the door. Your markings (ID tag) will be visible when the module door is closed.
3.7.3 Removing and Replacing the Terminal Block
When wiring the module, you do not have to remove the terminal block. If you remove the terminal block, use the write-on label located on the side of the terminal block to identify the module location and type.
User’s Manual 0300217-03 Rev. A
Chapter 3: Installation and Wiring
3-9
Figure 3-5
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. When replacing the terminal block, torque the retaining screws to 0.46 Nm (4.1 in-lbs).
3.7.4 Wiring the Finger-Safe Terminal Block
When wiring the terminal block, keep the finger-safe cover in place.
1. Loosen the terminal screws to be wired.
2. Route the wire under the terminal pressure plate. You can use the bare wire or a
spade lug. The terminals accept a 6.35 mm (0.25 in.) spade lug.
NOTE: The terminal screws are non-captive. Therefore, it is possible to use a ring lug [maximum 1/4 inch o.d. with a 0.139 inch minimum i.d. (M3.5)] with the module.
3. Tighten the terminal screw making sure the pressure plate secures the wire.
Recommended torque when tightening terminal screws is 0.68 Nm (6 in-lbs).
NOTE: If you need to remove the finger-safe cover, insert a screwdriver into one of the square, wiring holes and gently pry the cover off. If you wire the terminal block with the finger-safe cover removed, you may not be able to put it back on the terminal block because the wires will be in the way.
Wire Size and Terminal Screw Torque
Each terminal accepts up to two wires with the following restrictions:
Wire Type Wire Size Terminal Screw
Torque
Solid Cu-90° C (194°F) Stranded Cu-90°C (194°F)
#14 to #22 AWG (1.63 to 0.65 mm #16 to #22 AWG (1.63 to 0.65 mm
0.68 Nm (6 in-lbs) 0.46 Nm (4.1 in-lbs)
2
)
0.68 Nm (6 in-lbs) 0.46 Nm (4.1 in-lbs)
2
)
Retaining Screw Torque
3.7.5 Wiring the Module
Before wiring any module, disconnect power from the system power
!
Attention
After the module is properly installed, follow the wiring procedure below, using the proper cable, Belden 8761.
Figure 3-6
supply.
Signal Wire
Signal Wire
Drain Wire
T o Analog OutputTo Module
Cable
Signal Wire
Foil Shield
Signal Wire
3-10
Compact IO™ Isolated HART Analog Output Module
To wire your module follow these steps.
1. At each end of the cable, strip some casing to expose the individual wires .
2. Trim the signal wires to 2-inch (5 cm) lengths. Strip about 3/16 inch (5 mm) of
insulation away to expose the end of the wire.
Be careful when stripping wires. Wire fragments that fall into a module
!
Attention
could cause damage at power up.
3. At one end of the cable, twist the drain wire and foil shield together, bend them away
from the cable, and apply shrink wrap. Then earth ground at the preferred location based on the type of sensor you are using. See Grounding for more details.
4. At the other end of the cable, cut the drain wire and foil shield back to the cable and
apply shrink wrap.
5. Connect the signal wires to the terminal block. Connect the other end of the cable to
the analog output device.
6. Repeat steps 1 through 5 for each channel on the module.
1.1.6 Wiring Diagram
Figure 3-7
4 to 20 mA Out
N/C
I Out 0+
N/C
I Out 1+
N/C
I Out 2+
N/C
I Out 3+
N/C
N/C I Out 0-
N/C I Out 1­N/C I Out 2­N/C I Out 3­N/C
+
Load
-
3.7.7 Calibration
The isolated HART module is initially calibrated at the factory.
User’s Manual 0300217-03 Rev. A
Chapter 4 Configuring the OF4IH for CompactLogix Using RSLogix 5000
This chapter explains how to incorporate the OF4IH module into a CompactLogix system using RSLogix 5000 programming software . The process of incorporating your HART module into the CompactLogix system is similar to the process needed to add an Allen­Bradley module. You will use your RSLogix 5000 programming software to install and configure your HART module.
An Add-On profile is available on our website to ease the installation of the module, if you choose not to use the generic module profile. The Ad d -O n pr ofi l e d o wnload also includes an RSLogix 5000 sample project demonstrating how to read and write HART data to and from each channel. The sample project contains user defined data types, configuration tags, input tags, output tags, and ladder samples needed to configure each HART module. The topics discussed in this chapter include:
Setting up the generic profile Using the Add-On profile Understanding user defined dat a types Adding the controller and program tags Using the provided ladder sample
Section 4.1 Setting up the Generic Profile
The generic profile defines the module for the CompactBus, so that the right number of input, output and configuration words are reserved . To configure the generic profile you can use the profile already created in the sample project, see Figure 4-1, or follow the procedures outlined below.
Figure 4-1 (Pre-Defined Generic Profile)
4-2
Compact IO™ Isolated HART Analog Output Module
1. Create a new RSLogix 5000 project file. Click on the new project icon or on the
FILE pull-down menu and select NEW. The following screen appears:
Figure 4-2
2. Choose your controller type and enter a name for your project, then click OK.
The following main RSLogix 5000 screen appears:
User’s Manual 0300217-03 Rev. A
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