Pneumatic Logic: Difference between revisions
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=====Logic AND===== | |||
[[File:PneumaticsLogicAND.jpg|300px|right]] | [[File:PneumaticsLogicAND.jpg|300px|right]] | ||
Combining valves together allows us to produce [http://en.wikipedia.org/wiki/Logic_gate '''logic] circuits'''. | Combining valves together allows us to produce [http://en.wikipedia.org/wiki/Logic_gate '''logic] circuits'''. | ||
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The simplest of these is an '''AND circuit'''. By connecting up the valves in series as shown, the cylinder only operates if the first valve AND the second valve are switched on. | The simplest of these is an '''AND circuit'''. By connecting up the valves in series as shown, the cylinder only operates if the first valve AND the second valve are switched on. | ||
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<span style="color: green">'''Note:''' | |||
Logic circuits can be used to make pneumatic systems safe. For example some pneumatic drills will not work unless a guard is in place. The drill requires two switches to be operated in order to work: the first by putting the guard in place, AND the second by pressing start. | |||
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Logic | =====Logic OR===== | ||
[[File:PneumaticsLogicOR.jpg|300px|right]] | [[File:PneumaticsLogicOR.jpg|300px|right]] | ||
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The shuttle valve is required because if the pipes wire simply connected together, when the first valve was on and the second valve off, compressed air would simply exhaust to the atmosphere through the second valve. With the OR circuit, if either the first valve OR the second valve are switched on, then the cylinder is activated. | The shuttle valve is required because if the pipes wire simply connected together, when the first valve was on and the second valve off, compressed air would simply exhaust to the atmosphere through the second valve. With the OR circuit, if either the first valve OR the second valve are switched on, then the cylinder is activated. | ||
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{{Pneumatics Logic Control Valve Buyers Guide}} | |||
[[Category:Secondary]] | |||
[[Category:Pneumatics]] | |||
Latest revision as of 17:46, 26 June 2016
Logic AND
Combining valves together allows us to produce logic circuits.
The simplest of these is an AND circuit. By connecting up the valves in series as shown, the cylinder only operates if the first valve AND the second valve are switched on.
Note: Logic circuits can be used to make pneumatic systems safe. For example some pneumatic drills will not work unless a guard is in place. The drill requires two switches to be operated in order to work: the first by putting the guard in place, AND the second by pressing start.
Logic OR
An OR ciruit is produced by combining the outputs of two valves with a shuttle valve.
The shuttle valve is required because if the pipes wire simply connected together, when the first valve was on and the second valve off, compressed air would simply exhaust to the atmosphere through the second valve. With the OR circuit, if either the first valve OR the second valve are switched on, then the cylinder is activated.
 
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