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1  Using Arduino / Project Guidance / Re: Controlling proportional valves on: May 22, 2011, 11:45:21 am
Hi KE7GKP

The model number ive got is PVQ31-6G-23-01F

the two URLs below provide the data sheet.

http://uk.rs-online.com/web/search/searchBrowseAction.html?method=searchProducts&searchTerm=2550286831&x=28&y=14

http://content.smcetech.com/pdf/PVQ_EU.pdf

Hope this helps.

In terms of my requirements, speed is good. They make larger versions of this valve, which i would also like to use (if i every figure out how to wire the things up!) so whatever circitry i use will need to be adaptable to allow me to fit different spec'd valves at a later date. (perhaps by changing the spec of resistors etc)
I don't really want to power this straight off of the arduino board (i believe thats not possible anyway) and have a 24vdc supply avaiable. it feels like there should be a simple arrangement of componants that will make this work. Problem is i can't find any other examples of anything similar out there.

any helps is appreciated!!

Thanks
2  Using Arduino / Project Guidance / Re: Controlling proportional valves on: May 22, 2011, 11:05:18 am
Yes,the current controlled valves are what I want to use. Can these be done with PWM? Or is there an easier way of varying the current?

The spec for the one I've got is 24vdc 0-330mA. I've only got rather sketchy knowledge of electronics, it seems to me that this should be very easy to do, and I'm just missing something silly.

Any pointers on how to vary the current using the output from the arduino between 0 and 330mA (but not more than 330mA so the valve is protected) at 24vdc would be great.

Thanks
3  Using Arduino / Project Guidance / Re: Controlling proportional valves on: May 22, 2011, 06:22:01 am
Hi Terry,

Thanks for your comprehensove reply!! that gives me a great place to start.

The valves are made by a company called SMC, they have a website with all their specs on, great little valves, they are magnetic, so i'm hoping PWM will work.

Many thanks
4  Using Arduino / Project Guidance / Controlling proportional valves on: May 21, 2011, 01:12:35 am
Hi forum,
Im new to arduino, and have a project i'd like to get started with, but could do with a few pointers.

i'd like to control a proportional solenoid valve, the valve is 12vdc and is controlled by varying the current from 0mA to 330mA.
I'd like to use a pot to vary the current. Connecting the pot is not a problem as there are loads of examples of reading a signal from a pot suppiled with 5v.

The part I could do with some pointers with is supplying 24v and a current of upto 330mA controlled by the signal from the arduino.

Any pointers would be great!

Thanks

Mike
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