Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Textbook Question
Chapter 10, Problem 10SQ
Refer to Figure 10–6. When the thermostat contact closes, the compressor and evaporator fan start but the condenser fan does not start. Which of the following could NOT cause this problem?
a. The condenser fan motor is burned out.
b. The coil of the CF contactor is open.
c. One of the CF load contacts is defective.
d. The CFOL contact is open.
Fig. 10–6 Pressure switches are often used in air-conditioning circuits.
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Students have asked these similar questions
Design a ladder program to run the material mixing system according to the
following information:
1- When the start push button I0.0 is pressed, the pump (PUMP1 Q0.0) works
for five seconds and then stops.
2- After that, the pump (PUMP2 Q0.1) runs for three seconds and then stops.
3- After that the pump (Mixer Motor Q0.2) works for 60 sec and then stops.
4- After that, the control valve (drian valve Q0.3) is opened, the pump (PUMP3
Q0.4) works for ten seconds.
5- The stop push button I0.1 is used to stop the system.
Design a ladder program to run the material mixing system according to the following
information:
1- When the start push button 10.0 is pressed, the pump (PUMP1 Q0.0) works for five
seconds and then stops.
2- After that, the pump (PUMP2 Q0.1) runs for three seconds and then stops.
3- After that the pump (Mixer Motor Q0.2) works for 60 sec and then stops.
4- After that, the control valve (drian valve Q0.3) is opened, the pump (PUMP3 Q0.4) works
for ten seconds.
5- The stop push button 10.1 is used to stop the system.
Chemical 1
Pump 1
(00.0)
Start
(10.0)
Stop
(10.1)
Process Control
Pump 2
(001)
Mixer
Motor
(00.2)
Drain Valve (Q0.3)
Pump 3
(20.4)
Chemical 2
Design a ladder program to run the material mixing system according to the following
information:
1- When the start push button 10.0 is pressed, the pump (PUMP1 Q0.0) works for five
seconds and then stops.
2- After that, the pump (PUMP2 Q0.1) runs for three seconds and then stops.
3- After that the pump (Mixer Motor Q0.2) works for 60 sec and then stops.
4- After that, the control valve (drian valve Q0.3) is opened, the pump (PUMP3 Q0.4) works
for ten seconds.
5- The stop push button 10.1 is used to stop the system.
صمم برنامج لتشغيل نظام مزج المواد وحسب المعطيات التالية:
1- عند ضغط مفتاح التشغيل (10.0 start push button ) تعمل المضخة (PUMP1
Q0.0) لمدة خمس ثواني ثم تتوقف.
2- بعد ذلك تعمل المضخة (PUMP2 Q0.1) لمدة ثلاث ثواني ثم تتوقف.
3- بعد ذلك تعمل المضخة (Mixer Motor Q0.2) لمدة 60 sec ثم تتوقف.
4- بعد ذلك يتم فتح صمام التحكم (20.3 drian valve ,تعمل المضخة (PUMP3
20.4) لمدة عشر ثواني.
مفتاح الإيقاف (10.1 stop Push button) يستخدم لا يقاف النظام.
Chemical 1
Pump 1
(00.0)
هه
Start
(10.0)…
Chapter 10 Solutions
Electric Motor Control
Ch. 10 - Describe how pressure switches are connected to...Ch. 10 - What type of pressure switch is generally used to...Ch. 10 - A pressure switch is set to cut in at a pressure...Ch. 10 - A pressure switch is to be installed on a system...Ch. 10 - A pressure switch is to be installed in a circuit...Ch. 10 - Refer to the circuit shown in Figure 105. If the...Ch. 10 - Refer to the circuit shown in Figure 105. Assume...Ch. 10 - Refer to the circuit shown in Figure 106. Assume...Ch. 10 - Refer to the circuit shown in Figure 106. Assume...Ch. 10 - Refer to Figure 106. When the thermostat contact...
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