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 pdf fileProgrammable Logic Controllers (PLCs) An Overview
This chapter gives a brief history of the evolution of the programmable logic controller, or PLC. The reasons for changing from relay control sys- tems to PLCs are discussed. You will learn the basic parts of a PLC, how a PLC is used to con- trol a process, and the different kinds of PLCs and their applications. The ladder logic language, which was developed to simplify the task of pro- gramming PLCs, is introduced

File size: 6.71 MB
File type: pdf
Last download: Wed Mar 29, 2017 08:02:32 PM


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 pdf fileUSES OF PROGRAMMABLE LOGIC CONTROLLERS
Why Programmable Controllers? Complexity Much less complex than large relay based system Modularity Very flexible due to network architecture Documentation Virtually self-documenting Resource limitations Very space efficient and less manpower required to install Cost and schedule Up front material costs are similar, but savings on installation, maintenance, and troubleshooting increase rapidly as system size increases Reliability Industry and lab experience demonstrate PLCs comparable to relay system Familiarity Huge knowledge base in industry Training Short learning curve for hardware and programming Troubleshooting Ability to monitor every sensor speeds debug and repair

File size: 1.16 MB
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Last download: Sun Mar 26, 2017 07:20:06 AM


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 pdf fileSpeed Control of DC Motor by Programmable Logic Control with High Accuracy
PLC is proposed as the essential tool in many different applications. In this paper, the PID controller is designed to control Motor Speed based on incoming information of system and Auto tuning. The control system is simulated by powerful software Matlab and Simulink. Simulation results also show better performance of motor that reduce the rise time, steady state error and overshoot and increase system stability. Keywords PMDC Motor, Programmable Logic Controller, PID Controller, DC Drive, HMI Monitor, High Speed Counter, GMWIN Programming, Matlab Software

File size: 1.02 MB
File type: pdf
Last download: Wed Mar 29, 2017 12:31:12 PM


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 pdf filePLC Software Engineering Handbook
This document intends to -Define a standard software architecture for PLC applications. Provide rules to establish a standard approach for the development of control functions

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Last download: Tue Mar 28, 2017 03:07:58 PM


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