So, I have a Valve with a 230v Motor. It has 3 Wires, Ground, Power and Open.
Now, I’d like to control that Valve with a Shelly (or something similar). Ideally I’d like to control it in something like the Shelly’s “Blinds” mode where intermediate Positions can be reached via Sliders (and I think the Shelly uses the energy consumption to determin end stops, which isnt that important since the Valve has its own end-stop relays, but still).
The problem is, Blinds work with 2 Power Inputs, one for each direction. My Valve has one Power wire and one Signal wire, so P=Close and P+S=Open. Only supplying power to S does nothing.
What would be the easiest solution to operate the Valve?
There are two different circuits to make 230V 3-wire valve.
According to your description L and N are permanent connections and “Signal” to L to open the valve. So you can use Shelly 1 for example.
But to confirm that, post a link or photo of the label of your valve.
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If you want to stop at intermediate positions, the solution of Karosm wouldn’t work I guess. Because as soon as you remove power to the Signal line, the valve would close fully again.
A Shelly 2PM in roller mode should work.
Out 1 connected to P
Out 2 connected to P and S
After you calibrate the Shelly, you should be able to make the valve stop in intermediate positions, since both relais of the Shelly will remove power to the O1 and O2.
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No, I didn’t notice that requirement.
In any case, it would be better to verify that specific valve, many of them have fail-safe feature to close the valve if power is lost.
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Yes, youre right. But its not that simple. How do I connect only P? Maybe im missing something obvious, but as soon as I connect P and S in a terminal, theyre, well, connected? I think I made progress with the Shutter-Integration and grouping the switches and such, but its not simple.
You can connect only this or only that or both together.
Post some info about your valve.