1. INTRODUCTION
Programmable logic controllers (PLCs) are members of the computer family capable of storing instructions to control functions such as sequencing, timing, and counting, which control a machine or a process. The PLC is composed of two basic sections, the Central Processing Unit (CPU) and the Input/Output (I/O) interface system. The PLC measures input signals coming from a machine and through the internal program provides output or control back to the machine.
Ladder logic is the programming language used t ....etc

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I need it for a final project and I can't find it anywhere :( ....etc

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Presented by
KALOLIA ALAP R


What are Relays?
 Relays are electrical switches that open or close another circuit under certain conditions.
 Relay Purpose
 Relay Types
Electromagnetic Relays (EMRs)
 EMRs consist of an input coil that's wound to accept a particular voltage signal, plus a set of one or more contacts that rely on an armature (or lever) activated by the energized coil to open or close an electrical circuit.
 Solid-state Relays (SSRs)
 SSRs use semiconductor output ....etc

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Logic control and PLC


Control system in which the variables are binary- they can have either of two possible values , 1 or 0 is a logic control system

Programmable Logic Control

Definition
“ A digitally operating electronic apparatus which uses a programmable memory for the internal storage of instructions for implementing specific function such as logic, sequencing, timing, counting and arithmetic to control through digi ....etc

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kindly furnished me with what this topic is about i.e steps to achieve the project up to P.hD level ....etc

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I need a ladder diagram of an intelligent traffic control at a 4 way junction.I am pasting the code.here using potentiometer instead of sensors and when the output is high or density is high that lane gets servicing.else when values are low then sequential operation occurs. a manual switch or emergency switch to let a lane in emergency and after every 2 min all lanes are closed for 30 sec to alloow pedestrians. ....etc

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th sem)Hai my name is Manu, i am studying B.E. (EEE , 8th sem). I know the concept of fuzzy logics, bt hoe to do it for FUZZY LOGIC BASED DIFFERENTIAL RELAY FOR POWER TRANSFORMER PROTECTION.? This i chosen as my B.E project. send me the details about this project.?


This is my mail id:[email protected]
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Try to Download Elevator pLC. If I can download, I want to say Thank you very much. ....etc

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DIFFERENCE BETWEEN RELAY PANEL & PLC.
Relay Panel – It is an operating on analog system.
PLC – It is an operating on digital system.
Relay Panel –The maximum time any change in input is reflected in any output is t1.
PLC – The maximum time any change in input is reflected in any output is t1+t2+…+ Tn.
Relay Panel –Since this is made from analogue components. It is possible to replace. A logic section without stopping execution of other logic sections if wired correctly.
PLC – This ....etc

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