Setting up and Generating a signal to a pump

[Samarkand]

I am part of a undergrad project trying to generate a signal to a pump. We are using a NI 9472 with a cDAQ 9174 to run a ShurFlo 2088 series pump from a 12V power source.

Ultimately we want to generate a sinusoidal signal to the pump so that it pulses. For some reason our VI does not recognize the DAQ no matter how many times we try to recreate the coding.

Any help would be much appreciated!!

I've attached our physical set up and a picture of our code.

[Dennis_Knutson]

Do you really not know how to do a screen capture on the pc?

That picture of the pump is just as bad. It does not explain a thing. If you have a problem with code, you needto attach the actual VI since you've got everything hidden in a DAQ Assistant.

Your question is also confusing since if the DAQ Assistant did not recognize your hardware, you would not be able to create it. So, what is the exact problem you are having? If you can see a signal without the pump connected, you are having a problem driving it and probably need to amplify the current.

[Samarkand]

Dennis,

Unfortunately that is all I had to work with at the time as I did not have access to the computer from last semester.

However my group has made some progress and I have access to the programs now.

The exact problem we are having is that the pump "clicks" when the power turns on to the pump, but does not run. So from what I gather is that the code is allowing power to the pump, but maybe not enough? Or maybe is just momentarily turning it on?

What we want is for the pump to pulse at 1.2Hz.

One of our mentors suggested a PWM, but was unsure of the coding. Do you think that is the way to go, rather than the direction we are heading in?

I apologize if the project is rough around the edges, we are only recently familiar with LabView, and appreciate all the help given. Please let me know if you need any more information.