HART Process Automation with HART Technology
Transcript of HART Process Automation with HART Technology
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Knowing how – with HART
HART technology The vast majority of measuring instruments installed in the last decade are equipped with a HART communication interface. Thus, HART (Highway Addressable Remote Transmitter) is a well established industrial standard that is proven in the field and which has an installed base of over 35 million devices.
HART is a “Smart” technology, i.e. it supports the simultaneous transmission of a 4...20 mA analog signal and digital communication over the same pair of wires:• The 4...20 mA analog signal is
used for fast transmission of the measured value
• The digital HART signal is used to read and write device data
•WirelessHART enhances the HART protocol by providing wireless communication
Not just parameterization In many applications, the HART signal is used for parameterization only. With the appropriate tools, however, HART puts continuous device monitoring, real-time device diagnostics and multi-variable process information within your grasp – not just for new, but also for existing installations.
Knowing how – with HART Together with Endress+Hauser you can exploit the full potential of HART:• Comprehensive range of HART
measuring instruments•Advanced diagnostics and intelligent
multivariable devices• Plant Asset Management with
FieldCare• Simple integration of our HART
measuring devices in foreign systems
•Worldwide service network
With Endress+Hauser as your partner, you can profit from the advantages of modern HART device management.
Advantage of HART technology:
•Simpleandeffective,economical,easytouse
•Fastercommissioning,simplermaintenanceandrepair
•Real-timediagnosticslocalizeproblemsinseconds
•Preventivemaintenancemessagesreduceunplannedplantdowntimes
•Benefitsmultiplywhenintegratedintoprocesscontrolandassetmanagementsystems
3HART protocol
HART commands HART is a master-slave protocol for point-to-point and multidrop communication. It determines how data are to be presented and transferred between master and slave.
The HART protocol defines three classes of commands:•Universal commands offer a basic
set of functions and are supported by all HART instruments.
• Common practice commands offer functions which are optional, but which are supported by many HART instruments.
•Manufacturer-specific commands allow access to device data that are not standardized in HART, e.g. linearization, advanced diagnosis functions.
Interchangeability The universal commands access approximately 40 standard data sets that are present in all HART devices. This supports the interchangeability of the field devices.
The data sets include•Device identification:
device tag, supplier, device type and revision, device serial number
•Device settings: upper and lower range values, upper and lower sensor limits, process value damping, last adjustment date
• Process variables: primary variable plus secondary measurements and multivariable parameters
FieldCare,PlantAssetManagement
HART protocol
Device descriptions The HART master knows which parameters a device supports through so-called device descriptions (DDs). Since DDs can only map simple functions, so-called electronic device descriptions (EDDs) are finding increasing use for more complex devices.
FDT (Field Device Technology) builds on device descriptions. Device information
carriers are so-called Device Type Managers (DTMs). FDT maps all device functions including enhanced diagnosis functions such as envelope curves for ultrasonic and radar transmitters.
Device operation Plant Asset Management systems use FDT or DD/EDD technology. FDT operating tools include:• FieldCare• PACTware•ABB Composer, Control Builder,
Fieldbus Builder, etc.• Invensys I/A Series•Other FDT applications
Endress+Hauser fully supports FDT technology and offers DTMs for all its HART devices.
DD/EDD operating tools include:•Asset Management Solution (AMS)• Process Device Manager (PDM)• Field Xpert SFX350/SFX370•Other DD/EDD applications
Endress+Hauser offers both DDs and EDDs for its HART devices and integrates them into the above mentioned tools.
SiemensProcessDeviceManager(PDM)
EmersonAMS(AssetManagementSolution)
Typical HART Network
Ethernet
PROFIBUS DP
HARTHARTHART HART
LAN/WANWLAN
GSM/GPRSModem
WirelessHART
VariousHARTinstallations:point-to-point,viaremoteI/O,viaPLC/DCS,FieldgateSFG500orWirelessHART
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HART – solutions for device management
Typical HART Network
Ethernet
PROFIBUS DP
HARTHARTHART HART
LAN/WANWLAN
GSM/GPRSModem
WirelessHART
5Device management
HART integration HART devices are integrated into a control system via the 4...20 mA analog signal. The HART signal itself is used mostly for parameterization and diagnosis. This may be done on a point-to-point basis, or centrally from the control room.
When HART is used for Plant Asset Management, information must be gathered at regular intervals from the field device. This entails tapping the HART signal on the 4...20 mA line. Depending upon the system architecture involved, a number of solutions exist.
Solutions for device management•Direct access (point-to-point):
for parameterization and diagnosis, the HART signal is taken directly from the two 4...20 mA signal wires by FieldCare or Field Xpert.
• Remote-I/O or multiplexer: the HART signals can be accessed via a fieldbus system, e.g. PROFIBUS DP. Asset management is performed centrally, e.g. with FieldCare.
•HART compatible control system: a HART I/O card integrates the HART signals into the system (PLC/DCS). Asset management is performed by system tools.
• Remote access via Fieldgate SFG500 (PROFIBUS): a multiplexer or remote I/O allows parameterization, monitoring and diagnosis.
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Products and servicesLevel
Deltapilot
Gammapilot
Levelflex
Liquicap
Micropilot
Proservo
Prosonic
Waterpilot
Flow
Promag
Promass
Prosonic Flow
t-mass
Prowirl
Detailed information can be found at:www.products.endress.com/flow
Temperature
iTEMP TMT82
iTEMP TMT112 iTEMP TMT122
iTEMP TMT142
iTEMP TMT162
iTEMP TMT182
Detailed information can be found at:www.products.endress.com/temperature
Detailed information can be found at:www.products.endress.com/level
Pressure
Cerabar
Deltabar
Detailed information can be found at:www.products.endress.com/pressure
Cerabar
7Products and services
Products and services:
Endress+HauseroffersacomprehensiverangeofHARTdevicesandamultitudeofsupportingservices:•EngineeringofHARTbasedsolutions•Customerserviceandcommissioning•HelpinintegratingHARTdevicesintoforeignsystems•Seminarsandapplicationtraining
Analysis
Liquiline
Liquistation
Mycom
Smartec
Liquisys
Detailed information can be found at:www.products.endress.com/analysis
Software
CompuCal
FieldCare
W@M Portal W@M Enterprise
Detailed information can be found at:www.products.endress.com/plant-asset-management
System components
Commubox
Fieldgate
Field Xpert
RN221N
WirelessHART-Adapter WirelessHART-Fieldgate
RIA15
Detailed information can be found at:www.products.endress.com/system-components