1 / 15

Advantages of PLCs

CHAPTER - INTRODUCTION TO PLCS. Advantages of PLCs. Cost effective for controlling complex systems. Flexible and can be reapplied to control other systems quickly and easily. Computational abilities allow more sophisticated control.

josh
Download Presentation

Advantages of PLCs

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. CHAPTER - INTRODUCTION TO PLCS Advantages of PLCs • Cost effective for controlling complex systems. • Flexible and can be reapplied to control other systems quickly and easily. • Computational abilities allow more sophisticated control. • Trouble shooting aids make programming easier and reduce downtime. • Reliable components make these likely to operate for years before failure.

  2. PLC Origin - Developed to replace relays in the late 1960s - Costs dropped and became popular by 1980s - Now used in many industrial designs

  3. Relays and Schematic Symbols

  4. Logical Control with Relays

  5. Relay Logic In a PLC

  6. Reading Ladder Logic

  7. A Ladder Logic Example

  8. Mnemonics

  9. SFCs

  10. Structured Text

  11. PLC in a Control Loop

  12. The Four Stages of a PLC Scan

  13. Ladder Logic Inputs

  14. Ladder Logic Outputs

  15. Sample Problem: Try to develop (without looking at the solution) a relay based controller that will allow three switches in a room to control a single light.

More Related