frequency to voltage

[kjd27]

Hello,

i am new user for Labview. Could you please tell me , Is there any possibility to convert frequency to voltage

Thanks

kjd

[RavensFan]

This isn't actually a LabVIEW question, but a hardware question.  What is it you are actually trying to do?  Once you tell us that, we can guide you as to the kind of hardware you'd need, then guide you on how to control that hardware with LabVIEW,

[billko]

Frequency to voltage?  I have no idea what that means.

[billko]

Oh, this is a hardware question.

[kjd27]

hello,

Sorry for the inappropriate question

Acutally i want to control a motor using the frequency which i got from Labview.

I want to stop the machine when the frequency is higher.

So I planned to have a Relay NC to stop the machine.

And i think Relay will work with voltage( correct me if i am wrong, i am not good in electronics).

Because of this, i asked this question to convert the frequency which i got from Labview and convert it as voltage and give as a input to relay.

Please let me know whether it will work.

Thanks

kjd27

[billko]

---

@kjd27 wrote:

hello,

Sorry for the inappropriate question

Acutally i want to control a motor using the frequency which i got from Labview.

I want to stop the machine when the frequency is higher.

So I planned to have a Relay NC to stop the machine.

And i think Relay will work with voltage( correct me if i am wrong, i am not good in electronics).

Because of this, i asked this question to convert the frequency which i got from Labview and convert it as voltage and give as a input to relay.

Please let me know whether it will work.

Thanks

kjd27

---

I think you need to think this through a little more.  LabVIEW is a programming language.  What you call "frequency" and "voltage" are just labels for numbers stored in computer memory.  They represent the values of those characteristics that the equipment measured at the time the measurement took place.

Or am I to assume that these numbers will driving some kind of output device?

[kjd27]

Hello

Ya this will be connected to a relay NC and then to machine motor So I wanna to take the digital output from lab view and connect to relay .. Will it work ??

Thanks

[Dennis_Knutson]

Yes, as was answered in your duplicate post. The digital output is not connected to the NC contact. It is connected to one side of the coil through a driver. Buy a ULN200x for an off-the-shelf driver.

It sounds like you are just doing a comparison of the expected frequency. That results in a true/false result.