Answered: Some real-life scenarios where PLCs are…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

Some real-life scenarios where PLCs are commonly used is given below.
1. Identify and list the input and output for each of the scenario
2. Draw the ladder logic diagram equivalent to each of the scenarios.

Scenario 3:
A pushbutton will STARTthe conveyor belt. Make sure that the conveyor belt
can be stopped at any time with an E-STOP. While the package is moving
through the conveyor, the green light will be ON.
Once the package reaches the limit switch location, we are ready to fill the
package. Note that the limit switch is usually in Normally Closed condition
and it opens the contact when the package reaches the sensor contact. The
conveyor motor will STOP at this condition, the green light will turn off and
the RED light will be ON

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