Understanding Motor Controls
3rd Edition
ISBN: 9781305498129
Author: Stephen L. Herman
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 11, Problem 6RQ
Name two methods used by electronic timers to obtain their time base.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Build a ladder logic diagram showing the timer delays.
QUESTION 27
Pneumatic timers have better repeat accuracy that electronic timers.
True
False
The overshoot and system lag can produce an additional temperature swing as much as
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
- How are pneumatic timers adjusted?arrow_forwardAn industrial robot performs a machine loading and unloading operation. A PLC is used as the cell controller. The cell operates as follows: (1) a human worker places a part into a nest, (2) the robot reaches over and picks up the part and places it into an induction heating coil, (3) a time of 10 sec is allowed for the heating operation, and (4) the robot reaches into the coil, retrieves the part, and places it on an outgoing conveyor. A limit switch X1 (normally open) is used to indicate that the part is in the nest in step (1). This energizes output contact Y1 to signal the robot to execute step (2) of the work cycle (this is an output contact for the PLC, but an input interlock signal for the robot controller). A photocell X2 is used to indicate that the part has been placed into the induction heating coil C1. Timer T1 is used to provide the 10-sec heating cycle in step (3), at the end of which, output contact Y2 is used to signal the robot to execute step (4). Construct the ladder…arrow_forwardBlock diagram and explanation of the applications of open loop system: Automatic washing machine, Automatic toaster system, Traffic light controller and Furnace without thermostatic control but with timing devicearrow_forward
- Introduction about Pnuematic Control of Double Acting Cylinder Using Counter and Timerarrow_forwardQUESTION 25 Pneumatic timers use a diaphragm and operate on the principle of air displacement. True Falsearrow_forwardquestion:1Explain the Importance of Time Ratio and Timing charts in Mechanism design in detail.arrow_forward
- The automatic washing machine system is an example of ........... loop system.arrow_forwardIn a control circuit, it is imperative that a coil energize before another one. How can this be done when entering a program into the memory of the PLC?arrow_forwardIdentify the number of instantaneous centres present in a mechanism which has 4 links. a. 18 b. 12 c. 10 d. 6arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Understanding Motor ControlsMechanical EngineeringISBN:9781337798686Author:Stephen L. HermanPublisher:Delmar Cengage LearningElectrical Transformers and Rotating MachinesMechanical EngineeringISBN:9781305494817Author:Stephen L. HermanPublisher:Cengage Learning
Understanding Motor Controls
Mechanical Engineering
ISBN:9781337798686
Author:Stephen L. Herman
Publisher:Delmar Cengage Learning
Electrical Transformers and Rotating Machines
Mechanical Engineering
ISBN:9781305494817
Author:Stephen L. Herman
Publisher:Cengage Learning
Mod-01 Lec-16 Basics of Instrumentation; Author: nptelhrd;https://www.youtube.com/watch?v=qbKnW42ZM5c;License: Standard YouTube License, CC-BY