automation part 1


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  • AlRadsurah 13 vers 11
  • Typical application of a Gantry Robot Control Machine, used in a pick and place operation. The whole process sequence is controlled by a PLC. The various input devices such as selector switches, push button, toggle switches, sensors are connected to the input of the P:C via the input terminal block. The output devices such as the revolving light, indicators, relays, contactors and solenoid valves are connected to the output terminal of the PLC. The whole process is controlled by a ladder program loaded into the PLC CPU memory.
  • Benefit of using PLCIncreased in ReliabilitySolid-state devices are more reliable, in general, than mechanical systems or relays and timers.2. More flexibilityIn the past, each different electronically controlled production machine required its own controller. 15 machines might require 15 different controllers.Now it is possible to use just one model of a PLC to run any one of the 15 machines. One PLC can easily run many machines. 3. Lower costPLC is not expensive and it can lower down the control system maintenance costs due to minimal downtime.4. Communication capability5. Faster response time6. Easier to Troubleshoot
  • automation part 1

    2. 2. The objectives of this course are to:1) To provide an understanding of principle, techniques and characteristics of automation system through the used of Programmable Logic Controller (PLC) and Pneumatic system.2) To illustrate the use of PLC and Pneumatic system in the industrial application.3) To give students a hands on experience in designing a ladder diagram and Pneumatic circuit based on a case study and applied the knowledge gain to develop a PLC or Pneumatic-based project. 2
    3. 3. Upon completion of this course, students will be able to:1. Explain the terminology application associate to automation2. Determine the classification of automation3. Demonstrate the elements and type of automation4. Explore the mechanical systems used in automation for industrial applications5. Able to design and control the automation system 3
    4. 4. • Assessments Method % Quiz 5 Mid-term Test 10 Lab Report 20 Group Project 25 Final Examination 40 4
    5. 5. • Group Project -Divide yourselves into 6 groups (3per group) -To build a system which can be control using PLC or Pneumatic system (need to do some research) - Theme: ‘Energy Saver’ - Propose to me a topic in Week 5 - The final report shall be submitted in Week 13 or 14 - Presentation of your final product (Automation Day) in Week 14 (27/5/13) (Maybe will joint together with FYP final presentation) 5
    6. 6. • Topics Covered: i) Programmable Logic Controller Overview ii) PLC hardware Component iii) Numbering Systems and codes iv) Fundamentals of logic v) Basic of PLC programming vi) Developing fundamental PLC wiring diagrams and ladder logic programs vii) Programming timer viii) Programming counters ix) Basic pneumatic x) Advanced pneumatic 6
    7. 7. • Lecture Hours: Wednesday: 2.00pm to 4.00pm Venue: TU 4A• Lab (divide yourself into 2 groups): Time: (To be decided after class) Venue: Electronic Lab (Makmal Sains dan Teknologi) *Only after Week 4 or 5 7
    8. 8. • Text Book: Frank D Petruzela (2011). Programmable logic controller (4th Edition). New York: McGraw Hill. 8
    9. 9.  Take care of your Midterm test, Quiz, Project and Examination. Pay attention in class Try to get into the subject as soon as possible. Maintain a positive, can-do attitude! “…verily, god will never change the condition of a people until they change what is in themselves…” al qur’an 13:11 9
    11. 11. • Automated System : A system which is not-controlled by human.• Other types of control: i) Manual Control : When a person control a machine ii) Open-loop Control: If the controller does not use a measured output to compute control signal iii) Feedback (Closed loop) Control: When the controller use the output to compute the control signal. 11
    12. 12. • In the process industries, control is used to regulate level, pressure and temperature of refinery vessel.• In steel rolling mill, the position of the rolls is controlled according to the measure of thickness of the steel coming off the finishing line. 12
    13. 13. 13
    14. 14. Programmable Logic Controller Overview• What is PLC?? Programmable Logic Controller is a machine that can stores instructions in its memory to execute some specific process.• It is specially made for industrial needs for controlling the machines or process. 14
    15. 15. Programmable Logic Controller Overview History of PLC One of the major time-consuming changeover procedures had been the wiring of new or revised relay and control panels. Traditionally, the auto plants had to be shut down for up to a month at model changeover time. The PLC keyboard reprogramming procedure replaced the rewiring of a panel full of wires, relays, timers, and other components. The new PLCs helped reduce changeover time to a matter of a few days. 15
    16. 16. Programmable Logic Controller OverviewBenefit of using PLC1. Increased in Reliability2. More flexibility3. Lower cost4. Communication capability5. Faster response time6. Easier to Troubleshoot 16
    17. 17. Programmable Logic Controller OverviewPLC parts• PLC consists of Power supply, Central processing Unit (CPU), and Input-Output section. 17
    18. 18. Programmable Logic Controller OverviewPLC Programming• PLC can be programmed through Handheld device or computer . Computer needs a specialized software to interface to PLC. 18
    19. 19. Programmable Logic Controller OverviewPLC Principles 19
    20. 20. Programmable Logic Controller OverviewThe Process Control Scheme Pressure switch, temperature switch Monitor and push button inputs are examined and their status is recorded in the inputs controller’s memory. A closed contact is recorded in memory as logic 1 and an open contact as logic 0 the ladder diagram is Execute evaluated, status according to its recorded 1 or 0 state. program When the logic continuity exist from left to right across the rung, the output coil Change memory location is given a logic 1 value and the output module interface contacts outputs will close. If not, the output coil memory location is set to logic 0. 20
    21. 21. Programmable Logic Controller Overview• Input Connection 21
    22. 22. Programmable Logic Controller Overview• Output Connection 22
    23. 23. Programmable Logic Controller OverviewExample of ladder diagram 23
    24. 24. Programmable Logic Controller OverviewFlexibility in changing the process 24
    25. 25. Programmable Logic Controller OverviewWHY COMPUTER CAN’T REPLACES PLC?? 25