A Distributed Control System (DCS) integrates multiple process controllers and PLCs to monitor and control distributed equipment remotely. There are several types of DCS including Smart DCS and SixTrak IPm. When choosing a DCS system, factors like reliability, compatibility, graphical interface, processing speed, cost and ease of use must be considered. DCS systems have advantages like robustness, flexibility and security but also disadvantages like component costs and difficulty of programming and maintenance. Major DCS manufacturers include Honeywell, ABB and Siemens. In Saudi Arabia, DCS systems are used by companies like Saudi Aramco, power plants and factories.

1. Distributed Control System Group D Louay Sirwi 213627 Abdallah Jafar 214973 Dr. H. Shabaik SE – 401

2. Introduction (DCS) was Introduced in the late 1970’s Monitor and control distributed equipment with remote human intervention Dangerous zones and far areas

3. 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

4. DCS Architecture Instruments, sensors, and actuators PLCS and local control loops Data Acquisition and Interface Control rooms and SCADA Internet Remote access

5. Types of DCS Several types, like: Smart DCS SixTrak IPm

6. 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

7. Smart DCS Some applications: Food processing equipment Material handling Conveyor Systems

8. 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

9. 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

10. Network Configuration Configuration: Geometric physical form of the connections of the nodes and links of the network

11. 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

12. 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.

13. 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.

14. 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.

15. Disadvantages: Component cost A distributed system can be somewhat difficult to maintain Programming them is not easy Computing power per node is limited

16. 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

17. Companies in Saudi Arabia that uses DCS SAUDI ARAMCO Ghazlan Power plant SABIC Almost all factories in Jubail and Yanbu

18. Thanx U r WeLcOme for Questions