[Solved] MET230L: Hydraulics and Pneumatics Lab Unit 2 Lab Assignment 2

Remember to open a new Word file named MET230L_Unit2_Lab2_LastName_FirstName.doc(x) if you have not done so yet.

Exercise 1

This exercise illustrates the pneumatic seal-in (a.k.a. latch) function while controlling a double acting cylinder.

Consider the figure shown.

1. In the simulation software assigned by your instructor, open a new file named Unit2_Lab2Ex1_LastName_FirstName
2. Build the circuit using the components shown or their equivalents
3. Start the simulation by left clicking the start button circled in red as shown ( ).
4. Left click once on valve M1

• What happen to the cylinder? __________________________________________
• Why? _____________________________________

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__________________________________________ Figure for Exercise 1

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1. Left click once again on valve M1

• What happen to the cylinder? _____________________
• Why? _______________________________________________________________

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1. Left click once on valve M2

• What happen to the cylinder? ___________________________________
• Why? ______________________________________________________________

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1. Why do valves P1 and P2 remain actuated when M1 returns to its unactuated position after being momentarily actuated?

• _______________________________________________________________________ _______________________________________________________________________

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1. Take a screen shot of the working simulated circuit, copy and paste in the word document
2. Save the simulation and word files

Exercise 2

On your own, modify the circuit of Exercise 1 to control a single acting cylinder using a pneumatic seal-in circuit.

1. In the simulation software assigned by your instructor, open a new file named Unit2_Lab2Ex2_LastName_FirstName
2. Build and modify the circuit of exercise 1, shown again here, by
   • Getting rid (removing) the directional control valve P2
   • Replacing the double acting cylinder C1 by a single acting cylinder
   • Positioning the flow control valve F1 so that it controls the outward (extension) stroke
3. Start the simulation by left clicking the start button circled here in red as shown ( ).
4. Left click once on valve M1

• What happen to the cylinder? _____________________

1. Left click once on valve M2

• What happen to the cylinder? ___________________________________

1. Setting the opening of F1 valve to 10% , left click once the valve M1 and observe the speed of the cylinder extension stroke

• Does it increase or decrease? ___________________________________

1. Take a screen shot of the working simulated circuit, copy and paste in the word document
2. Save the simulation and word files

Figure for Exercise 2

Exercise 3

Consider the figure shown.

3. Give the complete name of the component M3. This should include its mode of actuation.

________________________________________________________________________

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1. In less than three line, briefly describe how it (M3) works

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1. In the simulation software assigned by your instructor, open a new file named Unit2_Lab2Ex3_LastName_FirstName
2. Build the circuit using the components shown or their equivalents
3. Start the simulation by left clicking the start button circled here in red as shown ( ).
4. Set the opening of valve F1 and valve F2 to 10%
5. Left click once on valve M1

• What happens to the cylinder rod? _________________________________

______________________________________________________________

1. Left click once on valve M2

• What happen to the cylinder rod? _______________________________

1. Left click once again on valve M1 and as the rod still extends, left click on valve M2

• What happens to the cylinder rod? ___________________________________
• Why? ______________________________________________________________

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1. Looking to the diagram, what are the two valves that need to be simultaneously actuated for the rod to start extending?

• Valve_______ and valve_______

1. Take a screen shot of the working simulated circuit, copy and paste in the word document
2. Save the simulation and word files

Figure for Exercise 3

Exercise 4

Consider the figure shown.

1. Give the complete name of the component S1. This should include its mode of actuation.

________________________________________________________________________

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1. In less than three line, briefly describe how it (S1) works

________________________________________________________________________

________________________________________________________________________

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1. In the simulation software assigned by your instructor, open a new file named Unit2_Lab2Ex4_LastName_FirstName
2. Build the circuit using the components shown or their equivalents
3. Start the simulation by left clicking the start button circled here in red as shown ( ).
4. Set the opening of valve F1 to 10%
5. With the cylinder fully retracted, left click once on valve M1

• What happens to the cylinder rod? _________________________________________

1. With the cylinder fully extended, left click once on the same valve M1

• What happen to the cylinder rod? __________________________________________

1. With the cylinder fully retracted, left click once on valve M2

• What happens to the cylinder rod? _________________________________________

1. With the cylinder fully extended, left click once on the same valve M2
   • What happens to the cylinder rod? _________________________________________
2. What are the two valves that need to be actuated for the cylinder to extend?

• Valve _____ and valve _____ OR valve _____ and valve _____
• Why? _________________________________________________________________

______________________________________________________________________

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1. What are the two valves that need to be actuated for the cylinder to retract?

• Valve _____ and valve _____ OR valve _____ and valve _____
• Why? _________________________________________________________________

______________________________________________________________________

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1. Can the cylinder stop or retract mid-way before it is fully extended? _______

• Why? _________________________________________________________________

______________________________________________________________________

______________________________________________________________________

1. Take a screen shot of the working simulated circuit, copy and paste in the word document
2. Save the simulation and word files

Figure for Exercise 4

Exercise 5

Consider the figure shown.

1. In the simulation software assigned by your instructor, open a new file named Unit2_Lab2Ex5_LastName_FirstName
2. Build the circuit using the components shown or their equivalents
3. Start the simulation by left clicking the start button circled here in red as shown ( ).
4. Set the opening of valve F1 to 10%
5. What valve (s) need to be actuated in order to extend the cylinder rod?

• _________________________________________

1. What valve (s) need to be actuated to retract the cylinder rod?

• __________________________________________

1. With the cylinder fully retracted, left click once on valve M2, then left click on M1

• What happens to the cylinder rod? _________________________________________
• Why? _________________________________________________________________

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1. What component makes the cylinder retract? _________
   • How? _________________________________________
2. Can the cylinder rod be forced to retract before being fully extended? ____________________

• Why? ______________________________________________________________

____________________________________________________________________

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1. Take a screen shot of the working simulated circuit, copy and paste in the word document
2. Save the simulation and word files

Figure for Exercise 5

Exercise 6

Consider the figure shown.

1. Give the complete name of the component R2

________________________________________________________________________

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1. In less than three lines, briefly describe how it (R2) works

________________________________________________________________________

________________________________________________________________________

________________________________________________________________________

1. In the simulation software assigned by your instructor, open a new file named Unit2_Lab2Ex6_LastName_FirstName
2. Build the circuit using the components shown or their equivalents
3. Start the simulation by left clicking the start button circled here in red as shown ( ).
4. What valve (s) need to be actuated in order to extend the cylinder rod?

• _________________________________________

1. What valve (s) need to be actuated to retract the cylinder rod? Specify if they need to be individually or simultaneously actuated, in case there are more than one valve.

• __________________________________________

1. With the cylinder fully retracted, left click on valve M1

• What happens to the cylinder rod? _________________________________________
• Why? _________________________________________________________________

______________________________________________________________________

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1. What valve (s) need to be actuated to make the cylinder retract mid-way before it is fully extended? _______________

• Why? _________________________________________________________________

______________________________________________________________________

______________________________________________________________________

1. Take a screen shot of the working simulated circuit, copy and paste in the word document
2. Save the simulation and word files

Figure for Exercise 6

Submission instructions

Remember to zip the word file along with all the simulation files in a folder named MET230L_Unit2_Lab2_LastName_FirstName and submit where instructed