NI 9264 to produce 3 phase waveforms and shown in 1 chart

[richard.tiatco@sandc.com]

Hi,

I'm trying to program the NI 9264 and produce the analog voltage output (5 volts amplitude). I also would like to see the waveforms in one chart for the waveforms if possible. I was using the Samples code "Voltage Continuous Output". I really don't need the triggering code part because I will have start button and stop button. The assignment of the code will be based on the table I sent earlier. I also believe I don't need the samples code part because as long as I have the output that is all I need. I will use this program to inject the output to our DSP board for testing purposes.

Voltage	Phase	NI9264	Phase (deg)	Voltage Output	Frequency
Vline1	Phase A	ao0	0	5V	60 Hz
	Phase B	ao1	120	5V	60 Hz
	Phase C	ao2	240	5V	60 Hz
	Phase Neutral	ao3	0	0V	60 Hz	This is the return/common
Vline2	Phase D	ao4	0	5V	60 Hz
	Phase E	ao5	120	5V	60 Hz
	Phase F	ao6	240	5V	60 Hz
	Phase Neutral	ao7	0	0V	60 Hz	This is the return/common
Cline1	Phase A	ao8	0	5V	60 Hz
	Phase B	ao9	120	5V	60 Hz
	Phase C	ao10	240	5V	60 Hz
	Phase Neutral	ao11	0	0V	60 Hz	This is the return/common
Unused		ao12
Unused		ao13
Unused		ao14
Unused		ao15

Please help. Thanks so much!

PS I am also new to LabVIEW and NI device

[LVNinja]

To show 3 waveforms in 1 chart , use the function Build array , and wire each waveform then plot on Waveform Chart. 

These waveforms you need to write to the Analog Outputs according to the specs on your table. 

[richard.tiatco@sandc.com]

Thank you so much for your quick reply LVninja!

Is it possible to see the 3 phase in one chart/graph? The below chart still shows they are separately shown. The reason for this is because I want to show they are 120 degrees apart. 

[LVNinja]

Yes it's possible, you just need to change how the data is presented. 

Rick Click on the Waveform Chart and choose OVERLAY  plots - That's how the Waveform chart is setup by default when you first place on the front panel. 

[richard.tiatco@sandc.com]

Thanks LV Ninja!

Shall I use the same concept as you mentioned earlier?

[LVNinja]

Yes, that's the same way to combine the 3 waveforms. Actually I believe when you place the waveform chart on front panel, they will show all waveforms overlayed mode by default. 

[LVNinja]

Sorry I made a mistake, you need to select OVERLAY PLOTS to show all on the same. 

[richard.tiatco@sandc.com]

Sounds good! Thank you so much...I will make the program and send you if problem arises.

[richard.tiatco@sandc.com]

Hi LVninja,

Here is the vi file I made. It is a modified version of the "Voltage Continuous Output" available from the Samples.

My settings should be:

1. ao0=ao4=ao8 = has same phase 0 deg

2. ao1=ao5=ao9 = has same phase 120 deg

3. ao2=ao6=ao10 = has same phase 240 deg

Now I only have 1 Physical Channels to select any output terminal in my current vi, do I need to add 2 more DAQmx so I can have items no. 2 and 3 above?

I also want to see all three waveforms in the same chart.

Plus the neutral line, do I need to use 1 channel output or shall I use the common channel/s from the NI device as neutral line?

Your help will be highly appreciated.

Thank you!

[LVNinja]

Can u save for 2020 please ?