EBK 3N3-EBK: INDUSTRIAL MOTOR CONTROL
7th Edition
ISBN: 9780176919962
Author: Herman
Publisher: VST
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Chapter 20, Problem 3RQ
Refer to circuit 2, shown in Figure 20–1. Assume that both times are set for a delay of 5 seconds. When the START button is pressed, motor 1 starts running immediately. After a delay of 10 seconds, motor 3 starts running, but motor 2 never starts. Which of the following could cause this problem?
- a. The TR1 coil is open.
- b. The M2 starter coil is open.
- c. The TR2 coil is open.
- d. The OL2 contact is open.
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Chapter 20 Solutions
EBK 3N3-EBK: INDUSTRIAL MOTOR CONTROL
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