Programmable Logic Controllers
Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Chapter 6, Problem 7RQ

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Justification:

  • Control contact is a part of control circuit.
  • Generally, the control contact of a control circuit is placed across the START button and it provides a closed path to the coil when the START pushbutton is released.
  • This control circuit needs only less amount of current to energize the coil...

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