Industrial Motor Control
7th Edition
ISBN: 9781133691808
Author: Stephen Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 22, Problem 1RQ
Why are numbers used when developing a wiring diagram from a schematic diagram?
Expert Solution & Answer
To determine
The reason for why the numbers are used while developing the wiring diagram from the schematic diagram.
Explanation of Solution
In the wiring diagram the number is assigned to each of the device or component so that the connections are easily understood and all the components with the same number must be connected.
The wiring diagram makes it easier in troubleshooting and the easy locating the fault.
Thus, the numbers in the wiring system are used to draw the wiring diagram from a schematic diagram.
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Students have asked these similar questions
Name
Section 5-2: Line Diagrams-Signals,
Decisions, and Actions
In the following application, a temperature switch controls a heating contactor and a flow switch is used to
ensure there is enough air flow. If there is not enough air flow, an alarm is sounded. Complete the required
information.
1. List all the signal devices in the circuit.
2. List all the action devices in the circuit.
3. List the decision part of the circuit that automatically sounds the alarm if there is a problem.
4. When the heating element is on during normal operation, is the flow switch open or closed?
CIRCULATING
2
L1
FAN
TEMPERATURE
SWITCH
TR
HEATING
ELEMENTS
FLOW
SWITCH
-HOT AIR
PADDLE
AIR FILTER
NORMALLY CLOSED
FLOW SWITCH
65
ALARM
(SOUNDS IF NO FLOW FOR
15 SECONDS OR MORE)
Date
HEATING
CONTACTOR
TR
ON-DELAY
TIMER
SUPPLY AIR
COLD AIR
(3) TIME SET= 15 SEC
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Chapter 22 Solutions
Industrial Motor Control
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