Distributed Control System
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Distributed Control System






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Distributed Control System Distributed Control System Presentation Transcript

  • Distributed Control System Group D Louay Sirwi 213627 Abdallah Jafar 214973 Dr. H. Shabaik SE – 401
  • Introduction
    • (DCS) was Introduced in the late 1970’s
    • Monitor and control distributed equipment with remote human intervention
    • Dangerous zones and far areas
  • What is a DCS?
    • A Distributed Control System integrates the PLCs and process controllers of a process line into a coordinated, interactive system.
    • Enables you to manage the process as a complete system
  • DCS Architecture Instruments, sensors, and actuators PLCS and local control loops Data Acquisition and Interface Control rooms and SCADA Internet Remote access
  • Types of DCS
    • Several types, like:
      • Smart DCS
      • SixTrak IPm
  • Smart DCS
    • Developed by Honeywell’s MICRO SWITCH Division
    • Advanced industrial control system that’s open at both the controller and device levels to maximize freedom of choice for users
    • can interface with both PC controllers and PLCs
  • Smart DCS
    • Some applications:
      • Food processing equipment
      • Material handling
      • Conveyor Systems
  • SixTrak IPm
    • A powerful DCS controller based on flexible open standards and packed with a wealth of features that only LINUX can provide such as:
      • Internet & internal Intranet Accessible by The SIXNET I/O Tool Kit
  • Choosing DCS systems
    • Reliability
    • Compatibility and operatibility
    • Graphical interface
    • Control algorithms (PID, ON-OFF, Fuzzy, Neural networks, etc.)
    • Processing speed and cycle time
    • Ease of configuration
    • Ease of use
    • Support and upgradeability
    • Cost
  • Network Configuration
    • Configuration: Geometric physical form of the connections of the nodes and links of the network
  • 1. Star
    • All communication is through the central unit
    • If central unit failed, all network will fail
    • Lots of wiring
    • Full control of data flow
  • 2. Ring
    • Any node can have a direct contact with other
    • No two nodes can send at the same time (o.w. there will be a collision)
    • If one node fails, all network will fail
    • Data sender/receiver are distinguished by the addresses.
  • 3. Bus
    • All nodes have a direct connection with each other
    • Failure of nodes doesn’t affect the network
    • New nodes can be easily added
    • Data sender/receiver are distinguished by the addresses.
  • Properties of distributed systems
    • Robust
    • Flexible
    • Secure
    • Emergent behavior
    • Less expensive installation and better reliability.
    • Less expensive to expand .
    • Data highway is used to replace wire from sensor to DCS and to the control valve.
    • It could do analog and discrete control.
  • Disadvantages:
    • Component cost
    • A distributed system can be somewhat difficult to maintain
    • Programming them is not easy
    • Computing power per node is limited
  • Some manufacturers of the DCS:
    • Honeywell
    • ABB Control, Inc.
    • Eaton Electrical, Inc.
    • Mitsubishi Electric Automation, Inc.
    • Phoenix Contact, Inc.
    • Rockwell Automation
    • Schneider Automation, Inc.
    • Siemens Energy & Automation, Inc.
    • Square D Company
    • WAGO Corporation
  • Companies in Saudi Arabia that uses DCS
    • Ghazlan Power plant
    • SABIC
    • Almost all factories in Jubail and Yanbu
  • Thanx U r WeLcOme for Questions