Introducción a los Controladores Lógicos Programables (PLC), Diapositivas de Administración de Empresas

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PLC - Introduction

WHAT DOES PLC STAND FOR?

PLC - PROGRAMMABLE LOGIC CONTROLLER

PLC IMPLEMENTS LOGIC CONTROL

FUNCTIONS BY MEANS OF A PROGRAM

PLC INTRODUCTION

WHAT DOES PLC STAND FOR?

A PROGRAMMABLE LOGIC CONTROLLER, OR

PLC, IS A RUGGEDIZED COMPUTER USED FOR

INDUSTRIAL AUTOMATION. THESE

CONTROLLERS CAN AUTOMATE A SPECIFIC

PROCESS, MACHINE FUNCTION, OR EVEN AN

ENTIRE PRODUCTION LINE.

PLC INTRODUCTION

HOW DOES A PLC DIFFER FROM A

COMPUTER?

 A COMPUTER IS OPTIMIZED FOR CALCULATION AND

DISPLAY TASKS

 A COMPUTER IS PROGRAMMED BY SPECIALISTS

 A PLC IS DESIGNED FOR (LOGIC) CONTROL AND

REGULATION TASKS

 A PLC IS PROGRAMMED BY NON-SPECIALISTS

 A PLC IS WELL ADAPTED TO INDUSTRIAL ENVIRONMENT

PLC INTRODUCTION

AN APPLICATION EXAMPLE 1: GATE CONTROL

PLC CAN SENSE A VEHICLE AT THE ENTRANCE OR

EXIT, AND OPEN AND CLOSE THE GATE

AUTOMATICALLY

THE CURRENT VEHICLE COUNT IS EASILY

DETERMINED BY PROGRAMMING A SIMPLE

COUNTER

PLC INTRODUCTION

WHY ARE PLCS SO COMMON?

THEY ARE COST-EFFECTIVE

THEY ARE FLEXIBLE, RELIABLE AND COMPACT

THEY HAVE SIGNIFICANT ADVANTAGES OVER

TRADITIONAL CONTROL SYSTEMS BASED ON

RELAY OR PNEUMATICS

PLC INTRODUCTION

WHERE ARE PLCS USED?

IN EVERY INDUSTRY WHERE AUTOMATION IS

INVOLVED, FROM INDIVIDUAL MACHINES TO

WHOLE PROCESSES

PLC INTRODUCTION

WHAT TASKS DO PLCS PERFORM?

THE LOGIC CONTROL TASKS SUCH AS

INTERLOCKING, SEQUENCING, TIMING AND

COUNTING (PREVIOUSLY UNDERTAKEN WITH

RELAYS OR PNEUMATICS)

IN ADDITION, PLCS CAN PERFORM A VARIETY

OF CALCULATION, COMMUNICATION AND

MONITORING TASKS

PLC INTRODUCTION

PLC INPUT/OUTPUT DEVICES

PLC INTRODUCTION

PLC OUTPUT DEVICES

RELAY CONTACTS

SOLENOID VALVES

SIGNAL DEVICES (SUCH AS LAMPS, ALARMS,

ETC.)

MOTORS

PLC INTRODUCTION

PROGRAMMING TERMINAL

PROGRAMMING IS DONE THROUGH

PROGRAMMING TERMINAL

PROGRAMMING TERMINAL TRANSLATES

ENGINEERING LANGUAGE (LOGIC CONTROL)

TO MACHINE LANGUAGE (BINARY CODE)

PLC INTRODUCTION

PROGRAMMING THROUGH STANDARD

COMPUTER

MOST PLC MANUFACTURERS OFFER

SOFTWARE PACKAGES THAT ALLOW A

STANDARD COMPUTER TO BE USED AS A

PROGRAMMING TERMINAL

PLC INTRODUCTION

PROGRAMMING THROUGH STANDARD

COMPUTER

PLC INTRODUCTION

RELATING THE PROGRAM TO INPUTS AND

OUTPUTS

PLC INTRODUCTION

LADDER DIAGRAM

PLC INTRODUCTION