EBK 3N3-EBK: INDUSTRIAL MOTOR CONTROL
7th Edition
ISBN: 9780176919962
Author: Herman
Publisher: VST
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Textbook Question
Chapter 19, Problem 3RQ
Referring to circuit 1 (Figure 19–2A), explain the operation of the circuit if pressure switch PS is connected normally closed instead of normally open.
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Select the proper choice(s) for each of the following statements:
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describe the wiring diagram as shown above in detail.( for the description name each component in the wiring diagram and their function)
Boxes (or certain production parts) are moved by a double-acting cylinder away from a gravity-feed magazine towards an assembly device. A push button and a pedal switch are to be incorporated in the circuit. The cylinder is to move out when either of these is actuated. The return stroke is actuated by the cylinder rod after it reaches the end of the forward stroke.
Draw the pneumatic circuit diagram using ISO symbols and connecting the ports with solid lines.
Chapter 19 Solutions
EBK 3N3-EBK: INDUSTRIAL MOTOR CONTROL
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- An 11-pin control relay contains three sets of single-pole double throw contacts. List the pin numbers by pairs that can be used as normally open contacts.arrow_forwardReferring to the circuit in Figure 2–33, should the float switch be connected as a normally open or normally closed switch?arrow_forwardRefer to Figure 21–1 to answer the following questions. When switch HOA SW 122 is in the off position, which contacts have connection between them?arrow_forward
- Refer to Figure 211 to answer the following questions. Referring to switch (RS SW 123), in what position must the switch be set to make connection between terminals 3 and 4?arrow_forwardRefer to Figure 21–1 to answer the following questions. In what position must switch SW 123 be set to make connection between terminals 3 and 4?arrow_forwardA pressure switch is to be installed in a circuit that requires it to have three normally open contacts and one normally closed contact. The switch actually has one normally open Contact What must be done to permit this pressure switch to operate in this circuit?arrow_forward
- What pin numbers are connected to the coil of an 8-pin control relay?arrow_forwardRefer to the circuit shown in Figure 5-29. Is the thermostat contact normally open, normally closed, normally closed held open, or normally open held closed? Figure 5-29 The contactor contains both load and auxiliary contacts.arrow_forwardWhy are the contacts of a micro switch spring loaded?arrow_forward
- Explain the difference between cumulative- and differential-compounded connections.arrow_forwardRefer to the schematic in Figure 7-10. Assume that when the START button is pressed, the control transformer fuse blows. What is the most likely cause of this trouble? Figure 7-10 Numbers are placed beside all components.arrow_forwardReferring to the schematic shown in Figure 97, how would the circuit operate if the normally closed R contact connected in series with F coil were to be connected normally open?arrow_forward
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