Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Question
Chapter 38, Problem 4RQ
To determine
The section of the PLC where the actual logic is performed.
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The symbol used for output device in PLC is
Oa.
O b.
HE
Oc.
d.
17-
The memory unit of PLC is used to write the program to control output device.
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True
False
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
- What device is used to program a PLC?arrow_forwardWhy 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_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
- 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 industry first started using programmable logic controllers?arrow_forwardQuestion 4 The symbol used for output device in PLC is Not yet answered O a. Marked out of 1.00 P Flag question Ob. Oc.arrow_forward
- Q1 ---- - Reduce the combinational logic circuit in figure 1 to minimum form. Figure 1 B C Darrow_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_forwardWhy are NEMA symbols such as push buttons, float switches, or limit switches not used in programmable logic controller schematics?arrow_forward
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