1 HART is a registered trademark of the HART Communication Foundation The Power of HART Using HART...

1HART is a registered trademark of the HART Communication Foundation

The Power of HART Using HART Communication to

Improve Process Operation and Better Manage Plant Assets

Ron HelsonHART Communication Foundation

Austin, TX

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HART is a registered trademark of the HART Communication Foundation

Things You May Know About HARTThings You May Know About HART Most smart instruments use HART

Communication HART smart field devices are used

interchangeably with traditional 4-20mA analog only units

Hand Held Communicators are often used to perform device set-up, calibration, commissioning and periodic maintenance functions

PC-based instrument management tools can remotely communicate with HART devices to manage calibration and other instrument parameters from central locations (instrument shop or control room)

HART = Savings in Installation & Maintenance

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Things You May Not Know About HARTThings You May Not Know About HART All HART smart devices provide process data for plant

operation continuously - 24/7 HART provides access to all device data

while the 4-20mA analog signal is being used for control

Information about the status (health) of the field device and quality of the 4-20mA signal is part of every message

The Primary Variable is transmitted as a 4-20mA signal and also as digital value

Many devices have process information (measured or calculated) in addition to the Primary Variable

This Data is VALUABLE $$$

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HART BasicsHART Basics

Digital FSK allows additional information to be carried on the same pair of wires

with the 4-20 mA Analog Signal

Simultaneously and Transparently

4-20 mA

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The HART FSK SignalThe HART FSK Signal

The Familiarity of 4-20 mA…with the Benefits of Digital Communication

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Valuable DataValuable Data

35-40 data items are Standard in every HART device Device Information Basic Calibration

Information Process Variables Diagnostic Status Alerts

Use this Data to Improve Process Operations and Better Manage Plant Assets

All Data is easily available to Plant Systems!

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Digital Process VariablesDigital Process Variables

Many HART devices support more than one process measurement or calculated value

HART provides access to All Process Variables in the device

All Digital Process Variable data includes: IEEE Floating Point Value Standard Engineering Units Code Data Quality Status

Primary Variable transmitted on the 4-20mA current loop continuously

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Status & Diagnostic AlertsStatus & Diagnostic Alerts

All HART smart field devices continuously self-assess and monitor their performance

Diagnostic status information is returned with every message

Status Alerts include quality of 4-20mA signal and process variable data

Continuous communication increases integrity of control system information Get early warning of device problems Automatically track and detect changes

in Range or Engineering Units Validate PV and Loop Current values at control

system with data from the source field device

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Example ApplicationsExample Applications Is the pH electrode cracked or coated? Has the temperature sensor failed? Is the measurement accurate? Is the measurement within range? Are the impulse lines clogged? Has the pressure sensor been over-ranged? Has the device been left in “loop test” position? Is the air pressure adequate to operate the valve? Is the control valve operating smoothly over the full range? Has the device failed or locked-up? Will the Emergency Shut Down valve operate if required?

Unleash the POWER of HART

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Use HART Full-timeUse HART Full-time to Unleash the POWER to Unleash the POWER

Part-Time Communication

FULL-TIME Communication

Integrated with Plant Systems

Commissioning Troubleshooting Documentation Database

Validation Automated

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Diagnostic Alerts for proactive action

PV Good / Bad status for improved safety / reliability

Validate accuracy of control system information

Full access to multi-variable instrument information

Integrate data with ERP/CMMS Systems

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Getting HART in Plant SystemsGetting HART in Plant Systems Cost-effective interfaces support

integration with plant systems Many control systems offer direct

HART interface and support use of HART data through-out

Third party products support use with non-HART capable systems Multiplexers - Some integral with FTA Gateways - HART to Ethernet, HART to

Modbus, HART to Profibus, more... Single Device Interfaces - Transform

digital process variables and status alerts into 4-20mA signals and/or contact closures

I/OI/O

HART

DA T A

ControllerController

HMIHMIEngineeringEngineering

MaintenanceMaintenance

HAR T

D A T A

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Solutions for HART IntegrationSolutions for HART Integration

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Using HART in Plant SystemsUsing HART in Plant Systems Continuously Monitor Device

Status & Diagnostics– Device Malfunction– Loop Current Fixed– Device Needs Maintenance

Validate Integrity of Control System Information

– Read Loop Current, PV and Range values from device

– Verify accuracy of system data– Ensure scaling factors in system match field device - 20mA & 4mA points

Get Full Value from Multi-Variable devices– Access Secondary Process Variables for operator display, trending, or control– Use additional process measurements and calculated values to improve plant

operation and manage assets

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Monitoring HART Smart ValvesMonitoring HART Smart Valves Actual stem position

– Identify sticking or stuck condition, % trim wear, poor response Actuator Pressure

– Low pressure from clogged filter, leaking connections or torn diaphragm

Temperature – Inside Positioner

Set Point – Target Stem Position

Fugitive Emission Potential Positioner malfunction Partial Stroking for ESD Valve testing

Specialized Diagnostic Software Packages

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Single Device HART Interface SolutionSingle Device HART Interface Solution

HART Field

Device

SPA uses HART communication to get process variable and diagnostic data from device and converts information into 4-20mA signals and/or contact closures

HART Instrument Fault Alarm

Second Variable (SV) High/Low Alarm

Third Variable (TV) High/Low Alarm

Fourth Variable (FV) High/Low Alarm

4-20mA Proportional to SV, TV, or FV

4-20mA Proportional to PV

One Wire from Field to Control RoomMultiple Analog Signals and Alarm Contacts to the Control System

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Getting HART on Plant NetworksGetting HART on Plant Networks OPC Server provides easy

access to HART device data anywhere on plant network

Allows several applications to access data in a HART device at the same time

Enables popular HMI and Trending packages to access data in HART devices

Connect to one or thousands of devices using common HART I/O systems & interfaces

Get HART Data on Your Desktop

HART SERVER TOOL

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Other Things You Should KnowOther Things You Should Know HART is Safe, Secure, and Available

– Tested and Accepted global standard– Supported by all major instrumentation manufacturers

Saves Time and Money– Install and commission devices in fraction of the time– Enhanced communications and diagnostics reduce maintenance– Low or no additional cost by many suppliers

Improves Plant Operation and Product Quality– Additional process variables and performance indicators– Continuous device status for early detection of warnings– Digital capability ensures easy integration with plant networks

Protects Your Asset Investments– Compatible with existing instrumentation systems and people– Allows benefits to be achieved incrementally– No need to replace entire system

HART = High VALUE + LOW RISK

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What to Do?What to Do? Identify your HART devices Provide HART capability training for your staff Talk with your suppliers about access to your

HART data and providing you with tools to better use the capability of your HART devices

Use your assets to their fullest… You probably are using only a small part of HARTability

Find Out More!

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Support for HART TechnologySupport for HART Technology

Provides Worldwide Support for Application of the HART Communication Technology

Technology Owner and Standards Setting Body for the HART Protocol

Independent Non-Profit Organization Funded by Membership and Training/Support service fees Any Company interested in Use of the HART Protocol should

be a member

®

HARTCOMMUNICATION FOUNDATION

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Foundation ServicesFoundation Services

Manage and control the HART Protocol Specifications

Enhance the HART technology as necessary to support industry needs for Smart Instrumentation

Provide Training Workshops, Newsletters, Web Site and other Services to Educate Industry on use of the HART Protocol

Manage Library and distribution of Registered Device Descriptions for HART devices

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The Bottom Line...The Bottom Line...

Most Users and Suppliers do not use the full value of HART

The HCF is here to help you

Get More from HART Communication!

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Questions & AnswersQuestions & Answers

Ron Helson

HART Communication Foundation9390 Research Blvd., Suite I-350

Austin, Texas 78759 USA

Tel: 512-794-0369

Fax: 512-794-3904

e-mail: [email protected]

www.hartcomm.org

Thank You for Your Attention!

1 HART is a registered trademark of the HART Communication Foundation The Power of HART Using HART...

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