Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Question
Chapter 53, Problem 8RQ
To determine
The components used to determine the amount of time the output remains turned off.
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1. What will be the output voltage during the positive half cycle of the input voltage?
2. What will be the output voltage during the negative half cycle of the input voltage?
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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How many degrees are the current and voltage out of phase witheach other in a pure resistive circuit?
Chapter 53 Solutions
Understanding Motor Controls
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- why we use volume in first question and in second we used area ? STATICSarrow_forwardName two methods of sensing the current flow through the shunt field.arrow_forwardMatch the following terms with the definitions.Damping Bandwidth End point Home position Holding torque Traverse rate The desired location to which a load is moved The speed at which a load is moved from one location to another A measure of how quickly the actuator responds to the command signal Prevention of overshooting The force that causes the load to maintain a standstill position A reference point from which a load is measuredarrow_forward
- This is for my mechatronics class in regards to PLC and ladder diagrams It is common practice to include a NC contact after the coil to prevent overloading and overheating of a device such as a motor. True or Falsearrow_forwardVoltage can be described as ____________ .arrow_forwardThe value of Vg-Vf at critical point is * O infinity two O one zeroarrow_forward
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