Power supply

[Morti]

Hi Expert

I`m going to control a dispensing head which has a DC motor inside. I found that I can control DC motors with controling their input Voltage.

The motor specification is :

starting situation:

1- voltage: 24 Volt

speed control

analog input for 0-10 V.
analog input for 4-20 mA.

My question is,

is there any programmable power supply with this specification and with small dimensions? also good price..

how I can program and control the power supply with Labview? or do you have any Vi for this porpuse?

I really appreciate any help and guide lines

Thanks

Morti

[Albert.Geven]

Hi

I don't know much about a small poer supply but you can easily write a control algoritm in LabVIEW. 

A server that does some PID control to correctly control speed of the motor is relatively easy due to the easy debug and parallellim in LabVIEW.

[Morti]

Thanks, Can you explain more about this type of control, or can you provide me with some example if it is possible, actually I need to connect PC to power supply and connect power supply to the motor. the motor which I have required a input voltage which with that voltage we can control the speed. so I need to control output voltage of power supply. so I think first I need to find a programmable power supply

[Albert.Geven]

correct,

the first thing you need is a powersupply that you can control.

Depending on the controltype you need extra hardware or not. And depending of the speed of control you need your program will change.

It's quite different to control a value 10 times per second or 1000 times per second.

[johnsold]

Morti,

In your original post you indicated that the speed control has 0-10 V or 4-20 mA inputs.  If that is the case, then you do not need a power supply.  You just need to feed a variable voltage (at low current) to the speed control voltage input.  The speed control device controls the power to the motor.

Any DAQ device with a 0-10 V Analog Output range should work.

Lynn

[Morti]

Thanks Lynn

Are you familar with DAQ card or have you worked with them. Can you suggest any type of them? becuase I am not familiar with them

Thanks

[Dennis_Knutson]

See the link at the top of the page called 'Products & Services'? Click it. NI sells a large variety of DAQ devices and there numerous on-line tutorials. You should also consider contacting your local NI Sales Engineer.

[johnsold]

Morti,

I think Dennis gave you the best advice.  Talking to an NI Sales Engineer will get you information about the DAQ devices available and will likely include a discussion on your overall project so that the recommendation covers other things you might need to do now or in the near future, but which may not ahve been mentioned here or even occurred to you.

Lynn

[Morti]

Thanks alot for your information. I will contact to the NI seller and I will Ask them about my requirment, any way thank you