Design PLC5 ladder logic to simulate the following temperature data from a temperature sensor. Conditions: At start up the temperature is 20 C. After 5 seconds the temperature rises 10 Degrees. When the temperature reaches 30 C. it remains constant for 15
EE369 Relay Ladder Logic Practice problems 1. Motor M1 is controlled by a standard Start-Stop-Seal circuit as follows: when the start pushbutton is pressed, a red light is turned on and 10 seconds later, M1 starts to run and seals itself. The light stays
EE369 Industrial Automation Relay Ladder Logic Practice Problems
Use the Common Electronic Symbols chart and the notes form the lecture to draw the ladder logic diagram (control circuit) for the following problems.
1. A three-phase motor is controlled usi
EE369 Industrial Automation
Quiz 4 Three Phase Systems (Delta)
Name: 50 LUTON Date:
A balanced three phase Delta connected system has a per phase load consisting of a 500 resistor in
series with a 100mH inductor. The phase voltage is 208 Volts @ 60 H
EE369 Industrial Automation Series RLC Problem: A series circuit is shown below. Calculate the total circuit impedance Zt and the voltage across the capacitor, Vc. E = 28V @ 60Hz R = 40 L = 10mH C = 20F
Solution: Zt = 134.9 Vc = 27.52
- 72.75 - 17.25
V
EE369 Industrial Automation Parallel RLC Problem: A parallel circuit is shown below. Calculate the total circuit impedance Zt and the current through the inductor, IL. E = 120V @ 60Hz R = 40 L = 100mH C = 200F
Solution: Zt = 18.22 IL = 3.18
- 62.91
- 90
EE369 Industrial Automation Complex numbers Problems: 1. Convert into rectangular coordinates:
a) b)
220 240
120 55
2. Convert into polar coordinates: a) 50-15j b) -25+25j 3. Solve the following:
a) b)
35 - 90 + 25 - 90 70 80 / 100 - 30
Solutions: 1. a) -
EE369 Industrial Automation Combo RLC Problem: A series-parallel circuit is shown below. Calculate the total circuit impedance Zt and the voltage across the resistor, VR. E = 90V @ 60Hz R = 600 C1 = 470F C2 = 200F
Solution: Zt = 18.9
- 89.1
V
VR = 63.13
EE369 Industrial Automation Module 1 Single Phase Review Problems
1. For figure 1, find the currents through the inductor and the
capacitor.
Figure 1 2. For figure 2, find the current through the resistor.
Figure 2
3. For figure 3, find the currents thoug
POWER FACTOR CORRECTION
Existing installation
208 Volts 60 Hz
75 HP Motor PF=0.75
P=75 HP x 746 W = 55.950 kW S=55.950 kW/0.75 = 74.600 kVA Q=74.600 kVA x sin 41.41 deg. = 49.3426 kVAR's
After PF correction What value of capacitor is needed to increase th
EE369 Industrial Automation PLC Sequential Practice Problem (Container example) A container is loaded with 50 items at a loading dock. The loading chute only opens if the container is at the loading dock. Once full, the container is moved forward by a con
EE369 Industrial Automation PLC Practice Problems
1. Develop a 24-hour digital clock that keeps track of hours, minutes and seconds. (Hint. Increment a counter every 60 seconds and another counter every minute.)
2. When a motor is turned off because of an
Allen-Bradley
1785 PLC-5 Programmable Controllers
Addressing Reference Manual
Important User Information
Because of the variety of uses for the products described in this publication, those responsible for the application and use of this control equipment