Create Analog OUT (0-10 V) of table - voltage 'profile '.

Hello world

with LabView and the MyDAQ, I want to control the speed of a motor. The engine is supported by an electronic frequency converter which empowers the engine. Data acquisition should simply give a control 0-10 Volt signal to 'tell' the frequency converter how revolutions per minute, the engine must run.

We want to create several 'profiles-voltage', which may be launched several times repeatable. For example:

Accelerate in linear from 5 seconds to 60 RPM

Hold 10 seconds 60 RPM

Accelerate in linear from 5 seconds to 100 rpm

Slow down in 20 seconds at 0 RPM

The question: is there a maybe to create a list of Exel with our values and to read in Labview? Anyone have an idea how we could achieve this?

Thank you all for your replies,

WhiteCloud

It depends on how you run the loop.if you see my example I generate 5000 samples for 5 seconds if it means that you must order the DAQ every 1ms. And also taking that much of samples in memory is not a good idea so decrease the frequency of sampling (from 1000 to 100) and order the DAQ every 10ms. example of using LV and try to implement low level vi and order a sample so that it runs at the scheduled time.

Tags: NI Software

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