Solenoid control
Solenoid control
(OP)
hey guys, I'm new in the field and I'm running into this basic problem that's giving a headache.
I got a pneumatic slide that's supposed to go up and down. It's controlled by a double sol, 2 position (I'm pretty sure that's the type of valve on the machine now). The valve power is tied to a safety relay's output. For safety issue, when the gate's opened, the output of the relay drop and so is power to the valve. This does not stop the slide from moving instantaneously; but the slide stops when it's either fully up or down. I think the problem's it's a 2 position valve. Am I on right??? I think I should use a double, 3 position.
Thanks,
Stan
I got a pneumatic slide that's supposed to go up and down. It's controlled by a double sol, 2 position (I'm pretty sure that's the type of valve on the machine now). The valve power is tied to a safety relay's output. For safety issue, when the gate's opened, the output of the relay drop and so is power to the valve. This does not stop the slide from moving instantaneously; but the slide stops when it's either fully up or down. I think the problem's it's a 2 position valve. Am I on right??? I think I should use a double, 3 position.
Thanks,
Stan





RE: Solenoid control
Are you switching inlet or exhaust air?
Have you leak-tested the valve at working pressure?
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Sometimes I only open my mouth to swap feet...
RE: Solenoid control
Ed
RE: Solenoid control
The only issue I would look at, is air still charging the pneumatics to keep it in position? Or is the cylinders still charged by the air that is trapped by the detented position of the valve?
I know some facilities want you to also lock out air when entering a gated area. If you do this will the slide stay in position?
I guess you have to ask this question. Under estop, the equipment should not move. But entering an area to recover a problem, do you want these cylinders charged with air? I would think you would not want these cylinders still charging with air when you enter the area. Is there a locking mechanism to keep the slide in place when air is not present?
RE: Solenoid control
RE: Solenoid control
Mark Hutton