We have three push buttons-PB1, PB2, and PB3-to control the simple pneumatic circuit shown below. PB1...
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We have three push buttons-PB1, PB2, and PB3-to control the simple pneumatic circuit shown below. PB1 is used to unlock access to the solenoids. PB2 is used to energize solenoid A, therefore extending cylinder A. PB3 is used to extend cylinder B by energizing solenoid B. In other words, PB1 and PB2 are required to operate Cyl A, and PB1 and PB3 are required for Cyl B. However, we desire that only one cylinder is able to move at a time, so if all three buttons are pushed, nothing should happen. Complete the ladder diagram that would control this system. SOL E A || || || CR 1 CR 2 CR 3 || | CR 2 CVI A 2(A) LAW KP) R CR 3 Hint: To operate Cyl A (true for Sol A), we need PB1 AND PB2 AND NOT PB3 → (PB1 PB2)-PB3 = Sol A To operate Cyl B (true for Sol B), we need PB1 AND PB3 AND NOT PB2 → (PB1-PB3)-PB2 = Sol B PB1 PB2 EN PB3 Cyl B 2(A) www K(P) $73R CR 1 CR 2 CR 3 Sol A Sol B Your options to fill in the ladder diagram are shown to the left. The normally open or closed contact relay switches should be inserted into the spaces in the diagram. We have three push buttons-PB1, PB2, and PB3-to control the simple pneumatic circuit shown below. PB1 is used to unlock access to the solenoids. PB2 is used to energize solenoid A, therefore extending cylinder A. PB3 is used to extend cylinder B by energizing solenoid B. In other words, PB1 and PB2 are required to operate Cyl A, and PB1 and PB3 are required for Cyl B. However, we desire that only one cylinder is able to move at a time, so if all three buttons are pushed, nothing should happen. Complete the ladder diagram that would control this system. SOL E A || || || CR 1 CR 2 CR 3 || | CR 2 CVI A 2(A) LAW KP) R CR 3 Hint: To operate Cyl A (true for Sol A), we need PB1 AND PB2 AND NOT PB3 → (PB1 PB2)-PB3 = Sol A To operate Cyl B (true for Sol B), we need PB1 AND PB3 AND NOT PB2 → (PB1-PB3)-PB2 = Sol B PB1 PB2 EN PB3 Cyl B 2(A) www K(P) $73R CR 1 CR 2 CR 3 Sol A Sol B Your options to fill in the ladder diagram are shown to the left. The normally open or closed contact relay switches should be inserted into the spaces in the diagram.
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Related Book For
Niebels Methods, Standards and Work Design
ISBN: 978-0073376318
13th edition
Authors: Andris Freivalds, Benjamin Niebel
Posted Date:
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