Faults in a control circuit that can make a motor fail to start.
Homework Answers
To control the start of motor, various starting methods like Direct-Online start, star-delta transformer start, auto transformer start are possible. The need of starters is initially the motor needs higher voltage for starting, then lower voltage during its operation. This change in voltage is controlled by the controller circuit.
Briefly dividing the faults -
1. Open circuit fault
2. Short circuit fault
3. Ground fault
Due to overcurrent from the power circuit, the circuit breaker opens and motor fails to start. Best way is to measure the voltage at the terminal and motor circuit terminal. And find the difference in voltage.
If the contactors are not getting energized, this also results in problem in start of motor.
Draw the control circuit of a motor starter system that controls two motors A and B....
Draw the control circuit of a motor starter system that controls two motors A and B. Each motor must have its own start and stop push button. Each start push button must have a memory or latch function so that the motor stays running when the button is released. each motor must have a green pilot light which is on when the appropriate motor is running. the circuit must include a red pilot which should be on when no motor...
Problem (5): Design the power and relay control circuit to start DC motor as following: 1)...
Problem (5): Design the power and relay control circuit to start DC motor as following: 1) Start by pressing start pushbutton and stop by pressing stop pushbutton. Start work with inserting resistance Rland (2 R2. After five seconds from starting we put Ri out of function and after 10 seconds from .starting we put R2 out of function
Design an NMOS based circuit to control a DC motor that requires 1A of current and...
Design an NMOS based circuit to control a DC motor that requires 1A of current and will be controlled by a microcontroller pin. Please draw and label a complete circuit. No tool necessary, make assumptions and draw by hand please.
L1 L2 L3 22 Xoxo89 MOTOR CONTROL TRANSFORMER START STOP STOP o The accompanying figure shows...
L1 L2 L3 22 Xoxo89 MOTOR CONTROL TRANSFORMER START STOP STOP o The accompanying figure shows the addition of a(n) button to the circuit.
1. Draw the power and control drawings to start a three phase induction motor using "three wire" ...
1. Draw the power and control drawings to start a three phase induction motor using "three wire" control. Be sure the STOP button is first on the control rung and the OL contact is the last item on the control rung. The Green Light should also be on when the motor is on.
1. Draw the power and control drawings to start a three phase induction motor using "three wire" control. Be sure the STOP button is first on the...
compare between universal motor(AC series motor) and capacitor start motor Wit! cont the 5. Compare your...
compare between universal motor(AC series motor) and capacitor
start motor
Wit! cont the 5. Compare your results from procedures 2, 3 and 4 with the results from procedures 2, 3 and 4 of Experiment 33. What conclusions can you make about the main winding currents? a. b. What conclusions can you make about the auxiliary winding currents? c. What conclusions can you make about the starting current for each type of motor? Curreut aud Curreut unike rsar motor has high...
3. For the circuit shown in Figure START switch is pressed, the when the motor starter contactor ...
3. For the circuit shown in Figure START switch is pressed, the when the motor starter contactor energizes as usual. However, when the START switch is released, the contactor de-energizes and the motor stops. What is the most likely cause of this problem? T1, T2, and l3. L3 AC L2 pical Motor LINE L1 FIGURE 11-2 Starter Application H1 H3H2 H4 FUSE X2 X1 OLİOLİOL EMERGENCY STOP START STOP OL 95 96 13 14 MOTOR In operation, when the rails...
Design a circuit of control to control a motor turning on 1) Determine in what region...
Design a circuit of control to control a motor turning on 1) Determine in what region the NMOS is operating 2) Calculate ripple voltage You must use: Voltage of transformer is 10Vp Regulation of voltage is 8.7% Voltage of threshold of each diode is 0.8V
How many times the normal current draws at the first start of the synchronous motor circuit?
How many times the normal current draws at the first start of the synchronous motor circuit?
2. For the following circuit: a) Find the total number of stuck-at- and stuck-at-1 faults. Show...
2. For the following circuit: a) Find the total number of stuck-at- and stuck-at-1 faults. Show your calculations. b) Reduce the total number of fault using the concept of fault equivalence. Show the total number of faults of the circuit and the final number of faults. c) Calculate the fault collapsing ratio (final number of faults/total number of faults).
Problem (5): Design the power and relay control circuit to start DC motor as following: 1) Start by pressing start pushbutton and stop by pressing stop pushbutton. Start work with inserting resistance Rland (2 R2. After five seconds from starting we put Ri out of function and after 10 seconds from .starting we put R2 out of function
L1 L2 L3 22 Xoxo89 MOTOR CONTROL TRANSFORMER START STOP STOP o The accompanying figure shows the addition of a(n) button to the circuit.
1. Draw the power and control drawings to start a three phase induction motor using "three wire" control. Be sure the STOP button is first on the control rung and the OL contact is the last item on the control rung. The Green Light should also be on when the motor is on.
1. Draw the power and control drawings to start a three phase induction motor using "three wire" control. Be sure the STOP button is first on the...
compare between universal motor(AC series motor) and capacitor
start motor
Wit! cont the 5. Compare your results from procedures 2, 3 and 4 with the results from procedures 2, 3 and 4 of Experiment 33. What conclusions can you make about the main winding currents? a. b. What conclusions can you make about the auxiliary winding currents? c. What conclusions can you make about the starting current for each type of motor? Curreut aud Curreut unike rsar motor has high...
3. For the circuit shown in Figure START switch is pressed, the when the motor starter contactor energizes as usual. However, when the START switch is released, the contactor de-energizes and the motor stops. What is the most likely cause of this problem? T1, T2, and l3. L3 AC L2 pical Motor LINE L1 FIGURE 11-2 Starter Application H1 H3H2 H4 FUSE X2 X1 OLİOLİOL EMERGENCY STOP START STOP OL 95 96 13 14 MOTOR In operation, when the rails...
2. For the following circuit: a) Find the total number of stuck-at- and stuck-at-1 faults. Show your calculations. b) Reduce the total number of fault using the concept of fault equivalence. Show the total number of faults of the circuit and the final number of faults. c) Calculate the fault collapsing ratio (final number of faults/total number of faults).
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