Sequence:PUSHBUTTON, A+, 3 seconds, A-

1. fall 2020
FACULTY OF ENGINEERING
MECHANICAL ENGINEERING DEPARTMENT
Mechatronics LAB
ME 543
[OSAID QASIM]
[Electro-Hydraulic System]

2. fall 2020
Needed Components
• 1 Hydraulic power pack.
• 1 4/2 way DCV double solenoid valve.
• 1 One way flow control valve.
• 1 Double acting cylinder.
• 1 Push button.
• 1 Relay coil.
• 1 Relay coil with pick-up delay.
• 2 Solenoid Valves.
• 2 Relay contacts .
• 1 Limit switch.

3. fall 2020
Design
Pressing the push button will actuate the relay coil (K1), so the relay
contact (K1) will close, which actuates the solenoid valve (1Y1), and the
double-acting cylinder starts to extend.
Once the double-acting cylinder been in the fully extended position (A2),
It will wait until another signal come from (1Y2), So the limit switch.
(A2) will close and actuate the relay with pick up delay of 3 seconds.
(K2), and that closes (K2) relay contact, and the signal actuates (1Y2),
Leading to return the double-acting cylinder to its fully retracted position.
It will wait for another push to perform the same cycle again.
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Note: There is an animated picture attached with this report to clarify the process by using FluidSim.