UP-COUNTER WITH COUNTER AND DC SPEED CONTROL

[kennett]

Currently have a project where I need to count RPH and at a given number that when reached an alarm is sounded; also the RPH/HZ would be controled via labview if possible with my SCC-68.


THANKS,

KENNETT

[hoffiz]

Hi Kennett,

First I will like to make sure that you mean “revolutions per hour” since it is more common to hear about RPM: “revolution per minute” in either case you are going to be measuring frequency.  My guess is that you have an encoder that will generate a square wave that will change its frequency as the speed increase and you will use this as an input to your counter. Click here for a very good resource in quadrature encoders. 

These are the instructions of how to connect the encoder to a counter they are specific for TIO boards but the steps will be similar for any DAQ card with a counter; you need to check which DAQ card is connected to your scc-68 since this is just a signal conditioning board. After you are able to measure the frequency the step to fire and alarm will just be LabView programming.  Also to further assist you I will like to know What DAQ card are you using? What version of LabVIEW? What DAQ driver?

[kennett]

Jaime,
Thank you for you’re reply. Yes I did mean to put RPM doesn’t matter like you said "frequency" is what is being measured. I will take a look at the links you sent me and thak you again have a great week!!

Cheers,

Kennett Bivens

Sr. R&D Engineering Technician

Endogastric Solutions

Redmond, Wa