Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Can the same input or output device be used more than one time in a relay logic diagram?
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- Question 3: A very common application of electromechanical relay logic is motor control circuitry. Here is a ladder diagram for a simple DC motor control, where a momentary pushbutton switch starts the motor, and another pushbutton switch stops the motor: Start Stop CR1 CR1 CR1 Mtr Translate this ladder diagram into point-to-point connections between the following components (shown in the following illustration):arrow_forwardWhat does the Arduino instruction pinmode do in the Traffic Light program?arrow_forward- Industrial Motor Controls 6.a. Where would be the first place to check if a PLC-controlled motor speed control system fails and themotor stops turning?A. At the auxiliary power supplyB. At the motor speed controller for signs of an error codeC. At the ladder logic for the register assigned to the D/A moduleD. At the D/A module6.b. What is the purpose of relay CRE in the roll stand machine?A. Relay CRE is used as an emergency stop relay.B. Relay CRE is used to control an alarm light.C. Relay CRE is used to power the PLC.D. Relay CRE is used to power the input modules.arrow_forward
- what are the two techniques for circuit switching? D) what is the cause of the propagation delay?arrow_forward1. Explain briefly the working principle of an electro magnetic relay2. Draw the symbol for an electro magnetic relay 2NO and 1 NC3. Explain the working principle of a limit switch4. Explain the working principle of a reed switch5. What are the functions of sensors6. Enumerate what are the different input elements.7. What are the signal processing elements?arrow_forwardDescribe what is meant by sequence control.arrow_forward
- Single - pole and double - pole switch symbols are shown as.arrow_forwardCreate a sequence detector that detects the sequence 1001 or 0110 by using Verilog Code. Construct the modules for both the Moore and Mealy models. Demonstrate your simulation results using the following input sequence for the test fixture (test bench): x= 0010011010010110010110110100arrow_forwardAs a general rule, for programmable logic controllers, coils can be connected in a series. True or Flasearrow_forward
- 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- RETURNarrow_forwardArrange a circuit to implement the following logic: In a production system, conveyors are used to deliver workpieces from one place to another. The START (with memory) and STOP pushbuttons are used to activate (stand-by) and disable the system. In the stand-by condition, the conveyor motor will turn on if an object touches the first limit switch and will turn off if the object touches the second limit switch. The red-light flashes to indicate the conveyor is moving. If the conveyor is not moving, the green light will be on. Draw ladder diagrams and wiring diagrams!arrow_forwardWhat type of device must you place as a last device on a rung of a relay logic diagram?arrow_forward
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