Programmable Controllers For Analog Control (APCAA)

In Mechanical

About this class



Learn the difference between discrete and analog control and how PLC??s implement PID control modes.





Prerequisites


This lesson is designed for participants familiar with digital electronic theory, programmable logic controllers and digital instrumentation.

Description


This lesson teaches the difference between discrete and analog control and how PLC??s implement PID control modes. It shows different hardware configurations and how process data is transmitted between components on a data highway. Programming languages including ladder logic and function block statements are presented. Additionally, the lesson shows how PLCs actually work in different process applications and some routine and preventative maintenance techniques.

Objectives


Describe the differences between discrete control and continuous process control. Describe how PLCs implement proportional, integral, and derivative process control. List and explain hardware for PID control. Explain the purpose of a/d converters. Describe typical field devices connected to PID modules. Describe the types of input signals generated by analog field devices. Explain the functions of a data highway. Explain factors that could affect the speed of data transfer and communications between PID modules. The PLC/PID systems to monitor a given process. Explain the uses of single loop and group displays. Identify typical programming languages for PID control. Explain how PID algorithms are configured in PLC software. Identify other configuration functions available for analog control. Identify other configurations for advanced control strategies. Describe the execution of a typical PID program. Explain how scan times affect program execution. Describe how to change from automatic to manual control modes. Describe the application of PID control using a PLC in a blending process. Describe? the application of PID control using a PLC for water quality control.

Contents

This lesson teaches the difference between discrete and analog control
and how PLC’s implement PID control modes. It shows different hardware
configurations and how process data is transmitted between components on
a data highway. Programming languages including ladder logic and
function block statements are presented. Additionally, the lesson shows
how PLCs actually work in different process applications and some
routine and preventative maintenance techniques.

  • Programmable Controllers for Analog Control

Curriculum

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