Programmable Logic Controllers - With Activities Manual and Access
5th Edition
ISBN: 9781259732430
Author: Petruzella
Publisher: MCG
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Chapter 14, Problem 6RQ
Program Plan Intro
Closed-loop control system:
- A feedback path is employed in closed-loop control system to measure the original system parameters such as pressure, speed, and so on.
- Here, the controller produces an error signal which initiates corrective action and energize the output device.
- The main characteristic of a closed-loop control system is that it can sense and measure the actual output of the system.
- Examples of closed-loop systems include cooling system in car, water level controller, tracking radar systems, and many others.
Explanation of Solution
b.
Function of process variable:
- Process variable is also called as process value or process parameter and usually abbreviated as PV...
Explanation of Solution
c.
Function of error amplifier:
- Error amplifier is used to determine the matching between the set point and the process operation...
Explanation of Solution
d.
Function of controller:
- Controllers are used to produce output signals...
Explanation of Solution
e.
Function of output actuator:
- Output actuators are normally used to convert system output electrical signals into physical actions...
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Chapter 14 Solutions
Programmable Logic Controllers - With Activities Manual and Access
Ch. 14 - Compare continuous and batch processes.Ch. 14 - Prob. 2RQCh. 14 - State the basic function of each of the following...Ch. 14 - State the purpose of each of the following types...Ch. 14 - Prob. 5RQCh. 14 - Prob. 6RQCh. 14 - Prob. 7RQCh. 14 - Prob. 8RQCh. 14 - Prob. 9RQCh. 14 - Prob. 10RQ
Ch. 14 - Prob. 11RQCh. 14 - What term of a PID control is designed to...Ch. 14 - Prob. 13RQCh. 14 - Prob. 14RQCh. 14 - Prob. 15RQCh. 14 - Prob. 16RQCh. 14 - Prob. 17RQCh. 14 - Prob. 18RQCh. 14 - Prob. 19RQCh. 14 - List four types of communication tasks provided by...Ch. 14 - Prob. 21RQCh. 14 - What are the three general levels of functionality...Ch. 14 - Prob. 23RQCh. 14 - Prob. 24RQCh. 14 - Compare device and process bus networks.Ch. 14 - Prob. 26RQCh. 14 - Prob. 27RQCh. 14 - Prob. 28RQCh. 14 - Prob. 29RQCh. 14 - Summarize the collision detection network access...Ch. 14 - Prob. 31RQCh. 14 - Prob. 32RQCh. 14 - Prob. 33RQCh. 14 - Prob. 34RQCh. 14 - Prob. 35RQCh. 14 - Prob. 36RQCh. 14 - Prob. 37RQCh. 14 - Prob. 38RQCh. 14 - Prob. 39RQCh. 14 - Explain how redundant media works.Ch. 14 - Prob. 41RQCh. 14 - Prob. 42RQCh. 14 - Prob. 43RQCh. 14 - Prob. 44RQCh. 14 - Summarize the two main functions of a SCADA...Ch. 14 - Prob. 46RQCh. 14 - Prob. 1PCh. 14 - Prob. 2PCh. 14 - How would an on/off controller respond if the...Ch. 14 - In a home heating system with on/off control, what...Ch. 14 - a. Calculate the proportional band of a...Ch. 14 - Prob. 6PCh. 14 - Prob. 7PCh. 14 - Prob. 8P
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