Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Chapter 6, Problem 6RQ
Explanation of Solution
a.
Schematic diagram of AC magnetic motor starter:
The schematic diagram for an across-the-line AC magnetic motor starter is given below:
Explanation:
- The above given schematic is of a three phase magnetic motor starter as AC signals mostly prefer three phase system...
Explanation of Solution
b.
i) Function of main contact M:
- The main contact M is placed in series with the motor.
- It is used to complete the path to the motor.
- It is a part of the power circuit and is built in such a way that it could handle full load current of motor.
ii) Function of control contact M:
- The control contact M is placed parallel to the start button.
- It is provided with an address similar to that of the starter coil M.
- It is used to keep continuity in path from left end of the rail to starter coil M, even though the start button is released.
- It is more than enough to handle small amount of current that is needed to energize the coil.
iii) Function of starter coil M:
- The starter coil M is placed in series to the start button...
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The attached picture shows the RTCAPI memory mapped register which has the address 0x180.
1) Program the MCU's registers so that
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b) the clock is divided by 16K
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Chapter 6 Solutions
Programmable Logic Controllers
Ch. 6 - Prob. 1RQCh. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Prob. 4RQCh. 6 - Prob. 5RQCh. 6 - Prob. 6RQCh. 6 - Prob. 7RQCh. 6 - Prob. 8RQCh. 6 - What do the abbreviations NO and NC represent when...Ch. 6 - Prob. 10RQ
Ch. 6 - Prob. 11RQCh. 6 - Prob. 12RQCh. 6 - Compare the operation of a photovoltaic solar cell...Ch. 6 - What are the two basic components of a...Ch. 6 - Prob. 15RQCh. 6 - Give an explanation of how a scanner and a decoder...Ch. 6 - Prob. 17RQCh. 6 - Prob. 18RQCh. 6 - Prob. 19RQCh. 6 - Prob. 20RQCh. 6 - Prob. 21RQCh. 6 - Prob. 22RQCh. 6 - Prob. 23RQCh. 6 - Prob. 24RQCh. 6 - Prob. 25RQCh. 6 - Prob. 26RQCh. 6 - Prob. 27RQCh. 6 - Prob. 28RQCh. 6 - Prob. 29RQCh. 6 - Prob. 30RQCh. 6 - Prob. 31RQCh. 6 - Prob. 32RQCh. 6 - Prob. 33RQCh. 6 - Prob. 1PCh. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Design a PLC program and prepare a typical I/O...Ch. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8P
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