Controlling of/off an actuator that has a stepper motor

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#1
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Hi 

 

I have a complicated situation in that I need to control the opening and closing an actuator from a relay

The actuator has a stepper motor that has 24V supply and needs 0-10 V command 

 

I have only on off relays, and the logic needs to be as follows: when i give voltage from the relay , the actuator should open or close and when I take the voltage , the actuator should close or open

 

I need to know if there exists such equipment and where I can find it 

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How do you plan to switch on/off the relay? Are you using any Arduino / AVR microcontroller or anything else?

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Hi. The relay to command is part of a controller with thermostat attached. Problem is to convert lets say 230v when relay is closed to command into 0.10vdc actuator

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MMircea wrote:

...and needs 0-10 V command...

 

What do you mean by that? What does 0V do? What does 10V do? And what do voltages in-between do? 

 

MMircea wrote:

...when i give voltage from the relay , the actuator should open or close and when I take the voltage , the actuator should close or open

 

Which is it? Open or Close?

 

And more importantly...post a link to the data for the actuator.

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Here is the actuator: https://www.caleffi.com/international/en-int/catalogue/flowmaticr-proportional-linear-actuator-kits-and-control-valves-picv-145013

 

from a simple relay that will receive a signal, I need to command this actuator to open when I give through the relay a voltage (12 or 24 or 230 …) and when the voltage will stop I need the actuator closed 

Last Edited: Sat. Jun 18, 2022 - 04:49 PM
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???

 

You have a valve.

 

The valve requires a 24V power supply.

 

The value uses a 0 to 10 V control signal to control how much to open the valve.

 

You have a relay that gives you an ALL OPEN or FULLY CLOSED signal.

 

You need a 10 V power supply.

You use the relay contacts to either "turn on" (supply) 10 V to the control input, or not, (disconnect the 10V from the input).

 

If you need help with this you should probably ask someone with more experience in electronics, circuitry, wiring, etc.

 

The valve manufacturer also makes control valves that are just on/off, and don't have a variable control.

Those are likely less expensive, in case this project is still in its design stage.

 

JC

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Just for learning :-

 

What the purpose of feedback signal in this case? To detect if the valve is stuck? 

 

 

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This has nothing to do with stepper motors---why bring that up?  Are you trying to make us think you want the AVR to generate a stepper motor controlsequence?

 

Which actuator?  Is the AVR to do the controlling?

Nothing say you need a relay at all, especially if you want a continuously variable control voltage.  

Do you have 12V available?  You can probably just rig up a transistor to it and your AVR to supply variable voltage (or even discrete 0/10) to your actuator

 

I need to know if there exists such equipment and where I can find it 

Do you have this system or not?  What equipment are your talking about???

 

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