Logic valve virtual test rig
Exercises and observations
1. Select the Directional valve equivalent, from the drop-down list.
♦ Click on the red button with the yellow triangle to switch the 4 logic valves. Note the A and B circles that show which pilot has pressure.
♦ Compare the function with a traditional 4 way, two and three position directional valve.
2. Select the Isolating slice, from the drop-down list.
♦ Operate the solenoid valve to see how the circuit changes.
♦ Consider why this system might be useful, for safety circuits for example.
3. Select the Freewheel crossover valve, from the drop-down list.
♦ Operate the directional valve supplying the cylinder and then operate the logic element.
♦ Consider what effect that switching the logic valve has on the circuit and why this might be beneficial for moving the wheel motors on a large machine for example.
4. Select the Re-generation slice, from the drop-down list.
♦ Operate the directional valve supplying the cylinder and then operate the logic element.
♦ Consider what effect that switching the logic valve has on the speed of the cylinder will extending.