Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Chapter 38, Problem 5RQ
What device is used to program a PLC?
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The symbol used for output device in PLC is
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The memory unit of PLC is used to write the program to control output device.
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Chapter 38 Solutions
Understanding Motor Controls
Ch. 38 - What industry first started using programmable...Ch. 38 - Name two differences between PLCs and common home...Ch. 38 - Name the four basic sections of a programmable...Ch. 38 - Prob. 4RQCh. 38 - What device is used to program a PLC?
Ch. 38 - What device separates the central processing unit...Ch. 38 - What is opto-isolation?
Ch. 38 - Prob. 8RQCh. 38 - Prob. 9RQCh. 38 - Prob. 10RQ
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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
- Why are normally closed components such as STOP push buttons programmed normally open instead of normally closed when entering a program into the memory of a PLC?arrow_forwardName two differences between PLCs and common home or business computers.arrow_forwardA PLC requires that times be programmed in 0.1-second intervals. What number should be entered to produce a time delay of 3 minutes?arrow_forward
- number 11arrow_forwardName the four basic sections of a programmable logic controller.arrow_forward1. A mixing vat has an inlet valve, an outlet valve, a mixing motor, and a single level detecting switch (Figure 1). Both valves are opened by solenoids. The level switch closes when the vat is full and stays closed until the vat is empty. Draw a PLC ladder logic diagram and provide the allocation list to do the following: a. When the start button is pushed, the inlet valve opens until the vat is full. b. The mixer motor comes on for 5 min. c. The outlet valve opens until the vat is empty. (closed) Level switch Motor Inlet valve Outlet valve Float Vat Figure 1arrow_forward
- In 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_forwardWhat is the purpose of the key switch located on the front of the CPU in many programmable logic controllers?arrow_forwardExplain the type of PLC, how it operates, the benefits and justification for using PLC within a hydraulic pressure test machine (used for pressure testing components)arrow_forward
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