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• Normally open start and normally closed stop pushbuttons are used to start and stop the process. • When the start button is pressed, solenoid A energizes to start filling the tank. • As the tank fills, the empty level sensor switch closes. • When the tank is full, the full level sensor switch closes. • Solenoid A is de-energized. • The agitate motor starts automatically and runs for 3 min to mix the liquid. • When the agitate motor stops, solenoid B is energized to empty the tank. • When the tank is completely empty, the empty sensor switch opens to de-energize solenoid B. • The start button is pressed to repeat the sequence. SOL A Motor Full sensor switch Empty sensor switch - SOL B Start/stop control station

• Normally open start and normally closed stop pushbuttons are used to start and stop the process. • When the start button is pressed, solenoid A energizes to start filling the tank. • As the tank fills, the empty level sensor switch closes. • When the tank is full, the full level sensor switch closes. • Solenoid A is de-energized. • The agitate motor starts automatically and runs for 3 min to mix the liquid. • When the agitate motor stops, solenoid B is energized to empty the tank. • When the tank is completely empty, the empty sensor switch opens to de-energize solenoid B. • The start button is pressed to repeat the sequence. SOL A Motor Full sensor switch Empty sensor switch - SOL B Start/stop control station

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Write PLC to execute this.

• Normally open start and normally closed stop pushbuttons are used to start and stop the process. • When the start button is pressed, solenoid A energizes to start filling the tank. • As the tank fills, the empty level sensor switch closes. • When the tank is full, the full level sensor switch closes. • Solenoid A is de-energized. • The agitate motor starts automatically and runs for 3 min to mix the liquid. • When the agitate motor stops, solenoid B is energized to empty the tank. • When the tank is completely empty, the empty sensor switch opens to de-energize solenoid B. • The start button is pressed to repeat the sequence. SOL A Motor Full sensor switch Empty sensor switch - SOL B Start/stop control station Allocations: Symbol Address Field Device ESTOP 10.0 N.C. momentary contact pushbutton START 10.1 N.O. momentary contact pushbutton EMPTY 10.2 N.O. Level sensor FULL 10.3 N.O. Level sensor MOTOR Q0.0 Motor starter SOL_A Q0.1 Solenoid valve SOL_B Q0.2 Solenoid valve
Transcribed Image Text:• Normally open start and normally closed stop pushbuttons are used to start and stop the process. • When the start button is pressed, solenoid A energizes to start filling the tank. • As the tank fills, the empty level sensor switch closes. • When the tank is full, the full level sensor switch closes. • Solenoid A is de-energized. • The agitate motor starts automatically and runs for 3 min to mix the liquid. • When the agitate motor stops, solenoid B is energized to empty the tank. • When the tank is completely empty, the empty sensor switch opens to de-energize solenoid B. • The start button is pressed to repeat the sequence. SOL A Motor Full sensor switch Empty sensor switch - SOL B Start/stop control station Allocations: Symbol Address Field Device ESTOP 10.0 N.C. momentary contact pushbutton START 10.1 N.O. momentary contact pushbutton EMPTY 10.2 N.O. Level sensor FULL 10.3 N.O. Level sensor MOTOR Q0.0 Motor starter SOL_A Q0.1 Solenoid valve SOL_B Q0.2 Solenoid valve
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