Activities Manual for Programmable Logic Controllers
5th Edition
ISBN: 9781259679568
Author: Petruzella, Frank
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 13, Problem 29RQ
Program Plan Intro
Programmable Logic Controller (PLC):
- Programmable Logic Controller (PLC) is a specialized computer used in industrial segments to control machines and process.
- PLC is program that consists of a set of instructions which resembles the controlling functions needed to perform specific tasks.
- The function of PLC is similar to that of a relay and hence, in an industrial segment a relay is greatly replaced by a suitable PLC.
- When compared to general Personal Computer (PC), a PLC is available in small and tiny sizes.
- The basic architecture of a PLC consists of an input-output interface module and a small Central Processing Unit (CPU) that runs by controlling
programming language.
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1- Write a PLC ladder program to implement the process illustrated in Figure.
2- Indicate all the input and output field devices in their un-actuated conditions with symbolic addresses.
A PLC is used to control a single-axis robot, in which the axis is driven by a pneumatic cylinder.
An output signal to the pneumatic cylinder causes it to extend (ON state). When there is no
signal, the pneumatic cylinder retracts (OFF state). The gripper is an also driven by a pneumatic
cylinder. The gripper open position is an OFF state and the closed position is an ON state. In
order to perform a task, the following sequence of operations must be performed:
TH
Sequence No.
Аxis
Gripper
OFF
OFF
1
ON
OFF
ON
ON
3
OFF
ON
4
OFF
OFF
The process begins when the start bush button is ON and a part triggers a limit switch. For
safety, an emergency switch is used to shut off the entire system. Design a PLC ladder diagram
for this application.
Write a Ladder Logic PLC program for each of the following scenarios. Label all contacts and coils in the PLC program.
Scenario 1
Turn on a light when either one of two switches (I1, I2) is toggled on (construct an OR Gate). Turn on a second light when both switches (Same inputs I1, I2) are toggled on (construct an AND Gate). Turn on a third light when both switches (Same inputs I1, I2) are toggled off (construct a NOR Gate). Turn on a fourth light when either switch (Same inputs I1, I2) is toggled off (construct a NAND Gate). Print a copy of the program showing the construction of the four gate configurations. Also, submit a truth table for the four input configurations.
Then modify your program so, only one light turns on at a time as you toggle the four truth table states.
Scenario 2
Construct a seal-in circuit using a stop-and-start pushbutton and an internal coil to seal in. Turn on a light for 10 seconds when the start button is pushed then turn it off automatically or…
Chapter 13 Solutions
Activities Manual for Programmable Logic Controllers
Ch. 13 - Prob. 1RQCh. 13 - Prob. 2RQCh. 13 - Prob. 3RQCh. 13 - List three potential noise-generating inductive...Ch. 13 - Prob. 5RQCh. 13 - Prob. 6RQCh. 13 - Prob. 7RQCh. 13 - Under what condition can a ground loop circuit be...Ch. 13 - Prob. 9RQCh. 13 - What operating state will cause an inductive load...
Ch. 13 - Prob. 11RQCh. 13 - Prob. 12RQCh. 13 - Prob. 13RQCh. 13 - Prob. 14RQCh. 13 - Prob. 15RQCh. 13 - List four uses for the data monitor function.Ch. 13 - Prob. 17RQCh. 13 - Prob. 18RQCh. 13 - Prob. 19RQCh. 13 - Prob. 20RQCh. 13 - Prob. 21RQCh. 13 - Prob. 22RQCh. 13 - Prob. 23RQCh. 13 - Prob. 24RQCh. 13 - Prob. 25RQCh. 13 - Prob. 26RQCh. 13 - Prob. 27RQCh. 13 - Prob. 28RQCh. 13 - Prob. 29RQCh. 13 - Prob. 30RQCh. 13 - Prob. 1PCh. 13 - A fuse is blown in an output module. Suggest two...Ch. 13 - Prob. 3PCh. 13 - Prob. 4PCh. 13 - Prob. 5PCh. 13 - Prob. 6PCh. 13 - A specific output is forced on, but the LED module...Ch. 13 - An electronic-based input sensor is wired to a...Ch. 13 - Prob. 9PCh. 13 - Prob. 11PCh. 13 - Prob. 12PCh. 13 - Prob. 13PCh. 13 - The program of Figure 13-39 is supposed to execute...
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