12-11-2014 12:48 AM
Hi,
I have NI-USB 6009, optocoupler sensor and rotary encoder to read RPM. My question is How can I do this in labview to read RPM ?
if anyone can please help me out with this. if you have example, it's more better. because I'm beginner in labview.
regard
Okky
12-11-2014 01:23 AM
Check out this USB6009 + Encoder.
There are limitations though. You can not sense direction.
12-11-2014 02:42 AM
ok thank's. but I have a problem how to create the VI
regard
okky
12-11-2014 04:35 AM
hi okky.septa.c,
Check this .USB-6008 and USB-6009 RPM Reading with Counter (Frequency)
12-15-2014 01:38 AM
when I used this VI, the count is going up, up and up. I need when I stop, the RPM in zero condition.
so, do you have solution for me ?
12-15-2014 02:27 AM
Hi okky,
read the manual of your USB6009: it clearly says the counter can only count-up!
But what is your problem anymway: to calc RPM you need to get differences of your counter…
I need when I stop, the RPM in zero condition.
So when you stop your VI the last RPM value should be zero? Even when the machine is still rotating? I don't get this…
Quick&dirty: write a zero to your RPM indicator when you stop the VI…
05-13-2015 04:41 AM
Hello,
I would like to know if NI USB 6009 needs an external power source for generating signals or is it good enough when connected to the PC ?
05-13-2015 04:42 AM
05-13-2015 04:54 AM
Thanks for the quick reply.
I'm supposed to record pressures from 4 Pressure switches and 3 piston detectors as well as generate signals to stop the pump when the pressure exceeds the limit.
I have very basic knowledge about this. It would be great if you can offer some advice here.
Thank you
05-13-2015 04:58 AM
Here's the Testrig