Schematics
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Posted by: Rene Van Bommel ® 08/21/2007, 07:18:29 Author Profile eMail author Edit

I have a quick quesiton on drawing schematics. Should I be drawing the schematics with A port as extend and B port as retract, or A port as the action position and B port as the home position? If anyone has any thoughts please let me know.

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Re: Schematics
Re: Schematics -- Rene Van Bommel	Post Reply	Top of thread	Forum

Posted by: Rene Van Bommel ® 08/23/2007, 12:45:28 Author Profile eMail author Edit

We have tech's here that would like us to draw the schematics so that the A position of the valve goes to the "action" port of the cylinder. Meaning that it moves the tooling into the position where work is to be completed. We are trying to set a standard here and we are looking for industry norm's.

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Re: Schematics
Re: Schematics -- Rene Van Bommel	Post Reply	Top of thread	Forum

Posted by: fluidpower1 ® 08/21/2007, 09:41:57 Author Profile eMail author Edit

I have never found any rules written on this but long ago was told for Hydraulic Valves, "A" Port connects to the Cylinder Cap Port (Extend) and "B" Port connects to the Cylinder Rod Port (Retract). Wih this hookup the "A" Solenoid on Hydraulic Directional Cotrols always makes the cylnder Extend and "B" Solenoid always make the cylinder Retract. In the real world I don't find this rule to be carried out in many instances on schematics or actual installations.

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Re: Re: Schematics
Re: Re: Schematics -- fluidpower1	Post Reply	Top of thread	Forum

Posted by: Kelly Bramble ® 08/21/2007, 09:54:24 Author Profile eMail author Edit

I believe you can use any nomenclature you want. Consider "R" for Retract and "E" for Extend. Keep in mind your organizational indentification standards, if there is one. Modified by Kelly Bramble at Tue, Aug 21, 2007, 09:54:57

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Re: Re: Re: Schematics
Re: Re: Re: Schematics -- Kelly Bramble	Post Reply	Top of thread	Forum

Posted by: fluidpower1 ® 08/24/2007, 21:54:36 Author Profile eMail author Edit

You can use any letters or numbers you choose, however all hydraulic Valves, Sub-Plates and Manifolds I am familiar with use "P" (Pump), "T" (Tank), "A" and "B" BTW, most Air Valves use numbers for port identification. Odd numbers for the Inlet and Exhaust ports, Even numbers for the outlet (working) ports. It's in the book.

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