Industrial Motor Control
7th Edition
ISBN: 9781133691808
Author: Stephen Herman
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 22, Problem 3RQ
The circuit in Figure 22–1 is designed to sound an alarm if the liquid level rises to a high enough level. What change would have to be made in the circuit so that it would sound an alarm if the liquid level dropped below a certain point?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Name
Section 5-2: Line Diagrams-Signals,
Decisions, and Actions
In the following application, a temperature switch controls a heating contactor and a flow switch is used to
ensure there is enough air flow. If there is not enough air flow, an alarm is sounded. Complete the required
information.
1. List all the signal devices in the circuit.
2. List all the action devices in the circuit.
3. List the decision part of the circuit that automatically sounds the alarm if there is a problem.
4. When the heating element is on during normal operation, is the flow switch open or closed?
CIRCULATING
2
L1
FAN
TEMPERATURE
SWITCH
TR
HEATING
ELEMENTS
FLOW
SWITCH
-HOT AIR
PADDLE
AIR FILTER
NORMALLY CLOSED
FLOW SWITCH
65
ALARM
(SOUNDS IF NO FLOW FOR
15 SECONDS OR MORE)
Date
HEATING
CONTACTOR
TR
ON-DELAY
TIMER
SUPPLY AIR
COLD AIR
(3) TIME SET= 15 SEC
© 2014 American Technical Publishers, Inc.
All rights reserved
Problem Description
Components are to be continuously stamped with a stamping device. After the start button is
pressed, the die is pushed down and the component is stamped. The die is to return to initial position after
five (5) seconds.
The sequence stops automatically after five (5) cycles. Start button should reset the counter. Inductive
sensors S1 and S2 are used to check the fully retracted and extended positions of the cylinder.
Draw the following:
Pneumatic circuit diagram
Electrical circuit diagram
The control system employs microcontroller to control the variables then it is called as direct digital control system.
Select one:
True
False
Chapter 22 Solutions
Industrial Motor Control
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Which statement is true in the case of the term "Range". O Is closely related to accuracy and define the minimum and maximum values an instrument is designed to measure. O Is closely related to accuracy and output reading of an instrument is linearly proportional to the quantity being measured. O Is not related to accuracy and define the maximum error of the measuring instrument during measurement process. The minimum and maximum values the instrument is designed to measurearrow_forward4. In the system in the figure, a certain amount of fuel is burned with air, and superheated water vapor is produced thanks to the heat released. In this facility, the amount of water in the boiler should be kept constant at the desired level and should level. According to this, not fall below the critical ↑= Kazan washe Gas stove girl's water vapor Fuel a) Place the control circuit that will control the water level in the boiler on the figure. b) Draw and interpret the control curve to be obtained if the controller you use is a PID type controller. 1arrow_forwardThe control signal from the controller reduces the error. Select one: O True Falsearrow_forward
- Which statement is true in the case of the term "Range". The minimum and maximum values the instrument is designed to measure Is closely related to accuracy and output reading of an instrument is linearly proportional to the quantity being measured. Is not related to accuracy and define the maximum error of the measuring instrument during measurement process. Is closely related to accuracy and define the minimum and maximum values an instrument is designed to measure.arrow_forwardThe variable which is to be controlled is known asarrow_forwardRead each statement carefully and fill in the blank(s) with the correct answer. 1- Pressure Transmitter is converting pressure into 2- When an 8.1 mA is giving to the control valve by using slider then it will open by %. 3- Click on _button to see the graph between Pressure Vs Time. psi air fill inside the air compressor then it will automatically off. 4- When 5- When the set point is below the current pressure in the PID process control then the Solenoid valve will be 6- In the ON/OFF process control, when the process value above the set point then control and maintain the pressure. valve will be open according toarrow_forward
- What is the amplitudearrow_forwardChoose Two usages of the valve which its symbol is shown in the image below. O Control the amount of the flow O Controls flow between branches O Set a back pressure Direct flow to two or more circuits O Pass a signal when a certain pressure is reached Symbolarrow_forwardSelect one: O a. False O b. True The control console in Temperature Measurement Methods experiment can be used to display the voltage and the temperature of a thermocouple of type K. Select one: O a. False Ob. True In temperature measurement experinent, if three temperatures are considered (50 °C, °C, and 20 C) the measured voltage according to Peltier law respectively will be (knowir that the ambirarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Welding: Principles and Applications (MindTap Cou...Mechanical EngineeringISBN:9781305494695Author:Larry JeffusPublisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning
Welding: Principles and Applications (MindTap Cou...
Mechanical Engineering
ISBN:9781305494695
Author:Larry Jeffus
Publisher:Cengage Learning
Relationship Between Elastic Constants and Connecting Equations; Author: Engineers Academy;https://www.youtube.com/watch?v=whW5PnM7Pug;License: Standard Youtube License