Open plc - ladder logic To control traffic, we have red lights to stop cars and green lights to initiate entry/exit. If a car is in the lane, then the red lights turn ON. If no cars are in the lane, then the green lights turn ON. Upon turning ON the main switch button, the main switch indicator should turn ON and the system should start with green lights ON and red lights OFF?

Open plc - ladder logic To control traffic, we have red lights to stop cars and green lights to initiate entry/exit. If a car is in the lane, then the red lights turn ON. If no cars are in the lane, then the green lights turn ON. Upon turning ON the main switch button, the main switch indicator should turn ON and the system should start with green lights ON and red lights OFF?

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter14: Troubleshooting Electric Control Devices

Section: Chapter Questions

Problem 34RQ

See similar textbooks

Similar questions

Subject: Digital Logic Design An aircraft’s functional monitoring system. A circuit is required to indicate the status of the landing gears prior to Take off. The plane has three landing gear: right, left and center. After the takeoff, the pilot will activate ‘gear up’ switch to retract the landing gear. Assume that has been done. A green LED will turn on in the cockpit only if all three landing (03) gear are properly retracted. A red LED will turn on if any of the three (03) landing gear fail to retract properly after takeoff. When landing gear is properly retracted, a corresponding sensor will provide High voltage to a logic circuit. When a landing gear has failed to retract properly, the sensor provides a Low voltage signal to the logic circuit. Design and implement the circuit of the system with the help of logic gate.
1. Fill-in the blanks with the correct answer or chose the correct answer. the blue wire 1-3. Given a 3-wire NPN inductive sensor, the black wire is to be connected to the and the brown wire to the to the 4. After connecting the load to an NPN sensor, the other terminal of the load will be connected to the 5. If a PLC, serving as load, uses a sinking input card, it needs a (PNP/NPN) proximity sensor. 6. Capacitive, Inductive, Photo electric sensors are called proximity sensors because
Circuit Logic. Match each statement to the proper circuit. All circuits have been drawn with a light (L) to represent the load, whether it is a motor, bell, or any other kind of load. In addition, each switch is illustrated as a pushbutton whether it is a maintained switch, momentary switch, pushbutton, switch-on target, or any other type of switch. from electrical motor controls for integrated systems workbook 2014 chapter 5
Question 14
9) Answer the questions, in sequence, for the jump to-subroutine and return program in the figure below. Assume all switches are turned off after each operation. a. Switches S1, S3, S4, and S5 are all turned on. Which pilot light will not be turned on? Why? b. Switch S2 is turned on and then switch S4 is turned on. Will output PL3 be energized? Why? c. To what rung does the RET instruction return the program scan? 11 Ladder logic program Main program file 2 Inputs L1 Outputs S1 PL1 L2 too S1 PL1 S2 JSR O S2 JUMP-TO-SUBROUTINE SBR file number U:3 PL2 -S3 S3 PL2 H PL3- oo-S4 S5 PL4 -S5 PL4 Subroutine file 3 S4 PL3 SBR SUBROUTINE RET- RETURN
Required information A fan is to run only when all of the following conditions are met: • Input A is OFF. • Input B is ON or input C is ON, or both B and Care ON. • Inputs D and E are both ON. . One or more of inputs F, G, or H are ON. Saved Note: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Identify the correct typical PLC ladder logic diagram for the given control system. Multiple Choice
Design the electrical ladder diagram and PLC ladder diagram for the PLC problem below. 1. Lamp 1 turns on when momentary push-button switch 1 (PB1) or momentary push-button switch 2 (PB2) is pressed. 2. Lamp 2 turns on when momentary push-button switch 2 (PB2) and momentary push-button switch 3 (PB3) are pressed. 3. When the momentary push-button stop switch is pressed, Lamp 1 and Lamp 2 turn off. Lamp 3 is on when both Lamp 1 and Lamp 2 are off.
Design a PLC program and prepare a typical I/O connection diagram and ladder logic program for the following motor control specifications: • A motor must be started and stopped from any one of three start/stop pushbutton stations. • Each start/stop station contains one NO start pushbutton and one NC stop pushbutton. • Motor OL contacts are to be hardwired.
QUESTION 1 You wish to turn on two LEDs in the middle of the display, so the first thing you will do is set AL to _________. a 00 b 11 c 18 d 55 QUESTION 3 Signaling interrupts is an effective way to deal with interrupts if _______. a the microprocessor is dedicated to a task b a minimal number of chips is needed c polling is preferred d there are many devices installed on the system QUESTION 4 If an ISR is called as a result of the instruction "INT 32", then it is __________. a an invalid operation b a high priority interrupt c a software interrupt d a hardware interrupt
we are interested in an automatic garage gate system for a building. This system includes a gate that goes up or down, a motor to actuate the gate (pull, push) and sensors to collect information (gate open contact, gate closed contact). The sensors are all similar, each signaling to its controller that a contact has taken place. The user has a remote control to control with just two buttons: open, close. The operating principle of the system is as follows. Suppose the gate is closed. The user opens the gate by pressing the Open button on his remote control. He can stop opening by pressing the Open button again, the motor stops. Otherwise, the gate opens completely and triggers a Gate Open sensor which causes the motor to stop. Pressing the Close button causes the gate to close if it is open (partially or fully). The closing can be stopped by pressing the Close button again, the motor stops. Otherwise, the gate closes completely and triggers a Gate Closed sensor which causes the engine…
Q5
Please label with words and explain logic steps.