1 / 26

Survey of Industrial Control

Survey of Industrial Control Robert Nolan CIS 888.11E Wi01 February 21, 200 Pharmaceutical Chemical Manufacturing Applications Allen-Bradley ABB Automation Foxboro Honeywell National Instruments Siemens Major Companies Types of Industrial Systems Distributed Control Systems (DCS)

benjamin
Download Presentation

Survey of Industrial Control

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Survey of Industrial Control Robert Nolan CIS 888.11E Wi01 February 21, 200 CIS 888.11E Wi01

  2. Pharmaceutical Chemical Manufacturing Applications CIS 888.11E Wi01

  3. Allen-Bradley ABB Automation Foxboro Honeywell National Instruments Siemens Major Companies CIS 888.11E Wi01

  4. Types of Industrial Systems • Distributed Control Systems (DCS) • Process Logic Controller (PLC) • Hybrid Control CIS 888.11E Wi01

  5. Basic DCS Functions • Control loops • Execute special programmed logic • Monitor inputs • Alarm the plant operations • Trend, log, and report data CIS 888.11E Wi01

  6. DCS Architecture • User Interface • Plant-Wide Data Highway • Communication Modules • Controller Modules • Local I/O Bus • I/O Modules • Process Instruments CIS 888.11E Wi01

  7. Process Instruments • Measurement • Temperature transmitters • Flow-meters • pH Sensors • Control • Valves • Heating elements CIS 888.11E Wi01

  8. I/O Modules • Main interface between DCS and process • Convert information to digital form • Signal filtering CIS 888.11E Wi01

  9. Local I/O Bus • Bridge between I/O Module and Controller Modules • Communication • Polling • Serial communication CIS 888.11E Wi01

  10. CANopen ControlNet DeviceNet EtherNet Fieldbus Interbus Profibus Smart Distrib. Sys. Local I/O Bus standards CIS 888.11E Wi01

  11. Advantages De facto standard Readily available Low cost Concerns Nondeterministic Lack of Industrial grade Ethernet CIS 888.11E Wi01

  12. User Layer Communication Stack Fieldbus Message Specification Fieldbus Access Sublayer Data link layer Physical layer Foundation Fieldbus CIS 888.11E Wi01

  13. Foundation Fieldbus (cont.) Communications Stack • Token-passing protocol • Link-active scheduler • Acts as central arbiter • Executes a schedule that allows deterministic control and comm. • Distributes time so all devices share the same sense of time CIS 888.11E Wi01

  14. Foundation Fieldbus (cont.) User Layer • Resource Block • Function Blocks • Transducer Blocks CIS 888.11E Wi01

  15. CAN • CAN frames • Producer/Consumer network • Multicast • Non-destructive bitwise arbitration • Cost-effective CIS 888.11E Wi01

  16. DeviceNet • Built on the CAN protocol • Developed by Allen-Bradley • Hot insertion CIS 888.11E Wi01

  17. Controller Modules • Receives the data • Performs process calculations • Sends actuator signals CIS 888.11E Wi01

  18. Controller Module Functions Control logic Control interlocks Sequencing Batch control Passing on trends Passing on report information • I/O signal characterization • Signal filtering • Alarming I/O modules • Ranging and engineering units CIS 888.11E Wi01

  19. Communication Modules Links • Data highway to controller modules • Data highway to user interfaces CIS 888.11E Wi01

  20. Real-Time Data Highway Issues • Synchronization • Deterministic • Token-passing vs. report by exception • Variation in protocol types • Peer-to-peer vs. collision detection • Size and speed CIS 888.11E Wi01

  21. User Interface • Device to integrate displays and controls for operators CIS 888.11E Wi01

  22. Honeywell’s PlantScape • Hybrid Control • Distributed Server Architecture CIS 888.11E Wi01

  23. PlantScape (cont.) • ControlNet process control network • Ethernet Supervisory network • Fieldbus integration module CIS 888.11E Wi01

  24. Allen-Bradley--ProcessLogix CIS 888.11E Wi01

  25. ProcessLogix • ControlNet network • Multicast capabilities CIS 888.11E Wi01

  26. References Fundamentals of Industrial Control, Albert & Coggan, ed., Instrument Society of America, 1992. http://www.iac.honeywell.com/plantscape/ http://www.ab.com/process/processlogix/networking.html http://www.ni.com/networks/ CIS 888.11E Wi01

More Related