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A presentation on PLC,SCADA,HMI AND DRIVES BY naveen jha

A presentation on PLC,SCADA,HMI AND DRIVES BY naveen jha. Automation. Automation is the use of control systems and information technologies to reduce the need for human work in the production of goods and services. Need of Automation. To reduce human effort. Reliability and precision.

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A presentation on PLC,SCADA,HMI AND DRIVES BY naveen jha

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  1. A presentation onPLC,SCADA,HMI AND DRIVESBYnaveenjha .

  2. Automation Automation is the use of control systems and information technologies to reduce the need for human work in the production of goods and services.

  3. Need of Automation • To reduce human effort. • Reliability and precision. • Flexibility. • To get maximum production in minimum time with minimum cost.

  4. Advantages of Automation • Replacing humans in tasks done in dangerous environments (i.e. fire, space, volcanoes). • Performing tasks that are beyond human capabilities of size, weight, speed) • Economy improvement.

  5. Disadvantages of automation • Unemployment. • Unpredictable development costs. • High initial cost. • Lack of intelligence

  6. Engineering Tools • PLC(Programmable logic controller) • SCADA(Supervisory control and data acquisition) • HMI(Human machine interface) • DCS(Distributed control system) • Drives

  7. Programmable logic controller • (Programmable Logic Controller): PLC is a multipurpose clock driven memory based electronic device which is also known as specialized industrial computer which deals with different level of complexity and control system.

  8. Role of PLC in Automation • Flexible • Visual observation • Space efficient • Pilot running • Speed of operation

  9. Advantages of PLC • Flexibility • Correcting Errors & implementing changes. • Testing  • Large quantity of contacts. • Reliability and maintainability.

  10. Disadvantage of PLC • Hold-up time is more. • Fail safe operation • Environmental consideration

  11. Block Diagram of PLC . Monitor Processor Memory IsolatedInputIs Isolated Output Power supply

  12. Architecture of PLC Input Processor Input Pins Monitornitor Processor Memory Ccomm. Port Power Supply Output Pins

  13. Parts of PLC • Processor • Memory • Input • Output • Power Supply

  14. Processor Processor converts any given input into valuable output and memory is used for functioning and storage of programs.

  15. Monitor • It provides a visual status of PLC.It may have LCD screen or LED indicator.

  16. Communication Port It is used to connect the PLC with computer. A communication cable is used for this purpose.

  17. Isolated Inputs The inputs of the PLC are various sensor which are used to sense the condition at the remote location. These sensors are isolated with PLC.

  18. Isolated output The output terminals module has terminals to which output signals are sent to activate relay, motors and displays.

  19. Power Supply • The electrical supply that converts the alternating current line voltage to various operational DC values. In this process the power supply filters and regulates the Dc voltages to ensure the computer operation.

  20. Software Used The software used for PLC programming is RSLogix 500. • RSLogix Micro software is a 32-bit Windows ladder logic programming package for the MicroLogix processors.

  21. Language Used • The language used for PLC programming is Ladder logic. • Ladder logic is a programming language that represents a program by a graphical diagram based on the circuit diagrams of relay logic hardware.

  22. Interlocking • An arrangement of signals and signal appliances so interconnected that their movements must succeed each other in proper sequence.

  23. Using Ladder logic

  24. Timer Timers are output instructions that let you control operations based on time or number of events.

  25. Types of timer • There are three types of timers: • TON (Delay turning on an output). • TOFF (Delay turning off an output). • RTO (Time an event retentively).

  26. TON Timer

  27. TON timer There are three outputs of TON timer: • EN (Enable ) • TT (timing) • DN (Done)

  28. Description TON Timer As soon as the input button is switches ON The status of TON timer is: En=1(when the input switch is ON) TT=1(ON during the hole timing) DN=0(During the whole timing and DN=1 after completion of timing)

  29. TOFF Timer

  30. TOFF Timer There are three outputs of TOFF timer: EN (Enable ) TT (timing) DN (Done)

  31. Description TOFF Timer When the input switch is ON the TOFF timer is OFF. TOFF timer started as soon as the output button is pressed.

  32. Status of the TOFF timer • When the input switch is ON, the output of the timer is: • EN =1 • TT =0 • DN =1

  33. When OFF switch is pressed EN =0(stop instantly) TT =1(OFF after the timing) DN =1(during the timing, and after timing the output will be low)

  34. RTO Timer

  35. Description of RTO RTO stands for retentive timer. It functioning is same as of the TON timer. But it retain the value even after the stop button is pressed.

  36. Applications Of PLC • Control Room • PLC based Weighing Machine • PLC based Conveyer control

  37. PLC based projects: • Bottle filling application • Traffic light • Zink coating using tank • Toll plaza apllication

  38. Bottle filling application

  39. Traffic light programming

  40. : • .

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