Modulating valves

nonuke

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Sep 2005

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840

• Dec 12, 2013

• #1

I have 10 modulating valves with a 0-10V Input.
I would like to use these valves as ON/OFF valves:
0VDC - valve closes
10VDC - Valve opens 100%

Do I have to use an D/A converter unit for each valve, or do you have a cheaper solution?
(all the digital inputs of the D/A will be low or high)

 

leitmotif

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Seattle Wa. USA

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• Dec 12, 2013

• #2

What pipe size of valves?? If one inch or less may be less expensive to use solenoid actuated.

Dan Bentler

 

widelto

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Barranquilla, Colombia

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• Dec 12, 2013

• #3

Use a 10 vdc power supply , then use a relay to on/off energy to the valves, do not forget to protect the power supply with a reverse diode.

 

dmargineau

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• Dec 12, 2013

• #4

...you sure about that?......sell them and you could probably use only 1/10 of the "income" to buy x solenoid valves...that's 90% profit...
"Your available voltage"VAC-to-10 VDC Power Supply with Rated Output Current higher than the proportional valve's maximum drawn current...if you want to operate more then one at a time, add the maximum current values when establishing the Power Supply rated output current...they won' close/open as fast as a "bang-bang"er and you might burn them up in due process...use DC required current rated, dry contact relays as individual control devices...

 

Last edited: Dec 12, 2013

nonuke

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• Dec 13, 2013

• #5

Thank you guys.
I which I could replace the valves by solenoid, but the client has the valves already installed and working with another system.
Where can I find a 10V power supply? I can only find 24V, 12 and 5V.

 

kamenges

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Green Bay, WI

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• Dec 13, 2013

• #6

http://www.acopian.com/power-supply-voltages/10-volt-power-supplies.htm?search=10

I've used these guys before with pretty good success.

Keith

 

jrwb4gbm

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• Dec 13, 2013

• #7

nonuke said:

Thank you guys.
I which I could replace the valves by solenoid, but the client has the valves already installed and working with another system.
Where can I find a 10V power supply? I can only find 24V, 12 and 5V.

Click to expand...

If the 5 volt supplies have an isolated output you could use two supplies and connect the 5 volt outputs in series.

 

Last edited: Dec 13, 2013

nonuke

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• Dec 13, 2013

• #8

Once again, thank you all for your help.
Since I'm in Europe, I have found this one.

 

shooter

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duketown

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• Dec 15, 2013

• #9

Tell the client he uses too expensive valves, but you can make it.
What PLC are you using?
as many plc can only run on 24 volt outputs.
some you can use with outside power.
first tr y this as it could happen the valve is banging around due to the squarewave. (if this occurs use a capacitor, it will slow down the signal)
as interface you can use relais.
you could also sell him a nice arduino with PWM modulating valves (depending on the job)

 

Lancie1

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• Dec 15, 2013

• #10

Sola Heve-Duty has a power supply with adjustable output 10 to 12 volts DC, 3 amps, Model SDP 2-12-100T.

http://www.emersonindustrial.com/en...ies/sdp-low-power-din-rail/Pages/default.aspx

http://www.alliedelec.com/search/productdetail.aspx?SKU=70211367

 

Last edited: Dec 15, 2013

shooter

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• Dec 17, 2013

• #11

go to a electronic shop and buy one of these regulatable power supplies with gauges on it.