FF Presentation

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This Presentation Will give Idea about the Basics of Foundation Fieldbus. For more Information mail me. ankur.mishra@honeywell.com

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FF Presentation

  1. 1. <ul><li>Using </li></ul><ul><li>F OUNDATION™ </li></ul><ul><li>Fieldbus </li></ul>
  2. 2. Purpose of this Presentation <ul><ul><li>To introduce F OUNDATION™ Fieldbus technology </li></ul></ul><ul><ul><li>To describe and demonstrate how to install and configure F OUNDATION Fieldbus control systems </li></ul></ul><ul><ul><li>To illustrate the use and benefits of fieldbus with examples </li></ul></ul><ul><ul><li>To Describe how to analyze the Segment </li></ul></ul>
  3. 3. Steps in a Fieldbus Project <ul><ul><li>UNDERSTANDING THE TECHNOLOGY </li></ul></ul><ul><ul><li>INSTALLATION </li></ul></ul><ul><ul><li>CONFIGURATION </li></ul></ul><ul><ul><li>OPERATION </li></ul></ul>
  4. 4. Steps in a Fieldbus Project <ul><ul><li>UNDERSTANDING THE TECHNOLOGY </li></ul></ul><ul><ul><ul><li>Comparing 4-20ma, smart, and fieldbus instrumentation </li></ul></ul></ul><ul><ul><ul><li>What Does FOUNDATION Fieldbus Do </li></ul></ul></ul><ul><ul><ul><li>Interoperability and device descriptions </li></ul></ul></ul><ul><ul><li>INSTALLATION </li></ul></ul><ul><ul><li>CONFIGURATION </li></ul></ul><ul><ul><li>OPERATION Control & Monitoring </li></ul></ul>
  5. 5. What Is Fieldbus? P L F Automation and Display Systems Fieldbus Process Plant Fieldbus - a digital, two-way multi-drop communication link among intelligent measurement and control devices, and automation and display systems.
  6. 6. 4-20 mA Systems Traditional Analog & Discrete Instruments <ul><li>Advantages : </li></ul><ul><li>OPEN , interoperable, interchangeable </li></ul><ul><li>Broad range of equipment </li></ul><ul><li>Multiple suppliers </li></ul><ul><li>Standard control system interfaces </li></ul><ul><li>Standard support equipment </li></ul><ul><li>Shortcomings : </li></ul><ul><li>Limited information </li></ul><ul><ul><li>- one variable, one direction </li></ul></ul><ul><li>Point-to-point wiring </li></ul>I/O 4-20 mA
  7. 7. How is Fieldbus Different from 4-20 <ul><ul><li>Fieldbus devices are connected in parallel on the bus, which carries digital data from/to all the devices on the bus </li></ul></ul><ul><ul><li>Fieldbus devices provide almost unlimited information to all other devices on the network </li></ul></ul><ul><ul><li>Data have cyclical redundancy checking (CRC) to ensure receiving devices use only good data </li></ul></ul><ul><ul><li>A multidrop fieldbus does not have the shortcoming of point-to-point wiring </li></ul></ul>4-20mA P.S. fieldbus P.S.
  8. 8. F OUNDATION Fieldbus Benefits REDUCED WIRING AND INSTALLATION Traditional 4-20 mA wiring, one IS barrier, one pair for each device 4-20 mA IS IS IS IS One IS barrier, one pair for many devices IS Fieldbus
  9. 9. F OUNDATION Fieldbus Benefits EXPANDED VIEW OF PROCESS IS IS IS IS 4-20 mA Fieldbus IS
  10. 10. F OUNDATION Fieldbus Benefits <ul><ul><li>MORE INFORMATION FOR ENGINEERING AND MAINTENANCE </li></ul></ul>IS IS IS IS One Process Value 4-20 mA IS Fieldbus Mode, Value, Status, Alarms, Trends
  11. 11. F OUNDATION Fieldbus Benefits DISTRIBUTION OF FUNCTIONS PID PID 4-20 mA PID AO AI In today’s systems, control functions all reside in central controllers. Fieldbus can be used in the same way, but fieldbus also enables control and I/O functions to be distributed to field instruments. AI IS Fieldbus AO
  12. 12. Fieldbus is the Next Generation <ul><li>Fieldbus offers: </li></ul><ul><ul><li>Reduced wiring and installation costs </li></ul></ul><ul><ul><li>Expanded view of the process </li></ul></ul><ul><ul><li>More information for engineering, maintenance, and support functions </li></ul></ul><ul><ul><li>Distribution of control functions to field devices </li></ul></ul>
  13. 13. <ul><ul><li>UNDERSTANDING THE TECHNOLOGY </li></ul></ul><ul><ul><li>INSTALLATION </li></ul></ul><ul><ul><ul><li>Components </li></ul></ul></ul><ul><ul><ul><li>Devices on a Segment </li></ul></ul></ul><ul><ul><ul><li>Wiring </li></ul></ul></ul><ul><ul><ul><li>Using Existing Wiring </li></ul></ul></ul><ul><ul><ul><li>Avoiding Problems </li></ul></ul></ul><ul><ul><li>CONFIGURATION </li></ul></ul><ul><ul><li>OPERATION </li></ul></ul>Steps in a Fieldbus Project
  14. 14. Fieldbus Wiring 24v Nom Fieldbus Power Supply Terminator Terminator Fieldbus Wire Signal Isolation Circuit Fieldbus Devices
  15. 15. Wiring and Installation Components <ul><ul><li>Wiring </li></ul></ul><ul><ul><li>Junction Box, Terminal Blocks </li></ul></ul><ul><ul><li>Connectors </li></ul></ul><ul><ul><li>Power Supplies </li></ul></ul><ul><ul><li>Power Conditioners </li></ul></ul><ul><ul><li>Terminators </li></ul></ul><ul><ul><li>Intrinsic Safety Barriers </li></ul></ul>
  16. 16. Shielded Twisted Pair Cables Several Manufacturers of Fieldbus Cable
  17. 17. Shielded Twisted Pair Cable Cable Jacket Shield Drain Wire Two Colors of Power/Signal Wire Shield with 90% Coverage
  18. 18. Terminal Blocks To Control Building (Single or Multi-Pair) (Shielded) Inside Junction Box Field Devices Twisted Pair (Shielded) Shields not shown Fieldbus Terminator
  19. 19. Fieldbus Terminal Blocks <ul><ul><li>Screw, plug, or compression (shown) terminations </li></ul></ul><ul><ul><li>Embedded parallel wiring of same color terminals </li></ul></ul><ul><ul><li>Embedded terminators </li></ul></ul><ul><ul><li>Embedded LED to show bus power ON </li></ul></ul>
  20. 21. Power Conditioner <ul><li>A power conditioner is a power supply impedance matching network and is required </li></ul><ul><ul><li>May be integral to the fieldbus power supply or external </li></ul></ul><ul><ul><li>May contain either </li></ul></ul>“ traditional” inductors or the electronic equivalent
  21. 22. Terminators <ul><ul><li>A terminator is an impedance matching device used at near and far ends of a fieldbus segment to prevent reflections of signals </li></ul></ul><ul><ul><li>There should be exactly two terminators per fieldbus bus segment. </li></ul></ul><ul><ul><li>Rule of thumb: place terminators </li></ul></ul><ul><li>as far apart as possible </li></ul>
  22. 23. Wiring Two Devices on a Segment Power supply not shown = Terminators, in J-Box Spurs with one device are limited to 120 meters each J-Box J-Box Single or multi-pair cable Spur T T T
  23. 24. Increasing the Length of a Network <ul><li>A repeater is an active device used to extend the length of a fieldbus </li></ul>T Fieldbus Repeater Fieldbus Segments Up to 1900 meters T T T = Terminator T
  24. 25. Maximum Length of a Network <ul><ul><li>A maximum of four repeaters can be used between any two devices on a fieldbus network </li></ul></ul><ul><ul><li>Using four repeaters, the maximum distance between any two devices on the network is 9500 meters; 31,168 feet; or 5.9 miles </li></ul></ul>Fieldbus Repeater Fieldbus Repeater Fieldbus Repeater Fieldbus Repeater Fieldbus Segments Fieldbus Network - up to 5.9 miles T T T T T T T T T T =Terminator T
  25. 26. Wiring Using Tree Topology T T Homerun Cable 120 Meter Spur HMI J-Box This fieldbus includes 4 devices and 3 devices on three spurs, so maximum spur length is 120 meters (next table) Power supply not shown = Terminators T
  26. 27. Maximum Spur Lengths Total Devices On Segment 1 Device per Spur 2 Devices per Spur 3 Devices per Spur 4 Devices per Spur 25 - 32 1 m 1 m 1 m 1 m 19 - 24 30 m 1 m 1 m 1 m 15 - 18 60 m 30 m 1 m 1 m 13 - 14 90 m 60 m 30 m 1 m 2 - 12 120 m 90 m 60 m 1 m Recommended Maximum Spur Length
  27. 28. Cable Types / Bus Segment Length Cable Type Gauge No. Max. Length A: Twisted-pair with Shield H1 (31.25kbps) #18AWG 1900 m B: Multi-twisted-pair with Shield H1 (31.25kps) #22AWG 1200 m C: Twisted-pair without Shield H1 (31.25kbps) #22AWG 400 m D: Multi-core with Shield H1 (31.25kbps) #16AWG 200 m Any existing, good quality #18 AWG twisted pair cable can be used for fieldbus.
  28. 29. Cable Length Calculation Cable Type A B C D H1 Total Length* 1900 m / 6234 ft 1200 m / 3937 ft 400 m / 1312 ft 200 m / 656 ft * Total length including all spurs Terminators and power supplies not shown Field Devices J Box Spur Homerun Cable # of Devices 25 - 32 19 - 24 15 - 18 13 - 14 2 - 12 Total Max Spur Length** 1 m / 3 ft 30 m / 98 ft 60 m / 197 ft 90 m / 295 ft 120 m / 394 ft ** Maximum length of any spur
  29. 30. Exceeds Maximum Spur Length T 500 m 500 m Homerun cable T J Box J Box J Box No Good
  30. 31. Correct Installation J Box J Box J Box T 500 m 500 m Homerun cable T Fieldbus Repeater T T
  31. 32. More Control with Installed Wires J-Box Three existing 4-20 mA Pairs T T Fieldbus devices Three existing pairs, one used for fieldbus J-Box
  32. 33. Polarity <ul><ul><li>Fieldbus devices may be sensitive to polarity </li></ul></ul><ul><ul><li>Therefore, treat all devices as polarity sensitive until all your suppliers say their devices are not polarity sensitive </li></ul></ul><ul><ul><li>Fieldbus twisted pairs cables are required to indicate polarity (color coding of conductors) </li></ul></ul><ul><ul><li>Polarity should be maintained through all connection points </li></ul></ul>
  33. 34. Grounding <ul><ul><li>Grounding rules used in the installation of the fieldbus should follow current standard practices based on company/plant standards and applicable international standards </li></ul></ul><ul><ul><li>Fieldbus shield should only be grounded at one point </li></ul></ul><ul><ul><li>Fieldbus devices should not connect either conductor of the twisted pair to ground at any point in the network </li></ul></ul><ul><ul><li>Shield may not be used as a power conductor </li></ul></ul>
  34. 35. Summary - Preparing for Fieldbus <ul><ul><li>Select appropriate wire type and size for fieldbus application </li></ul></ul><ul><ul><li>Locate junction boxes in strategic locations </li></ul></ul><ul><ul><li>Power and terminate segment properly </li></ul></ul><ul><ul><li>Locate loop devices on one network, if possible </li></ul></ul><ul><ul><li>Avoid </li></ul></ul><ul><ul><ul><li>Segments and spurs that are too long </li></ul></ul></ul><ul><ul><ul><li>Too many devices on one network </li></ul></ul></ul><ul><ul><ul><li>Loop devices on more than one segment </li></ul></ul></ul><ul><ul><ul><li>Series wiring </li></ul></ul></ul>
  35. 36. Steps in a Fieldbus Project <ul><ul><li>UNDERSTANDING THE TECHNOLOGY </li></ul></ul><ul><ul><li>INSTALLATION </li></ul></ul><ul><ul><li>CONFIGURATION </li></ul></ul><ul><ul><li>OPERATION </li></ul></ul>
  36. 37. Definition of Configuration <ul><li>Configuration is setting the control strategy and schedule, alarms, trends, and link active scheduler, and downloading this information to the devices on the fieldbus. </li></ul>
  37. 38. Define Control Strategy AI-110 PID-110 AO-110
  38. 39. USAGE OF FBT – 6 <ul><li>ANALYSE THE SEGMENT </li></ul>

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