Can you please attach the pdf of the pump. And your loop is set to iterate at ms loop rate in your VI – a really bad combination… Did you try to find good PID gains using Ziegler-Nichols or similar? Accepted by topic author victorzhao. Message 7 of I don’t think these have any effect on why I am not getting a smooth bumpless transfer, so I only put comments to explain what they do.
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This is a very straightforward example.
I am not sure labciew or not this is a result of poor PID tuning. It looks like the cause of the bump from manual to automatic was a result of the topology being incorrect. Therefore we would like to place cookies on your device in order for this website to function in the way that we intended.
Accepted by topic author victorzhao. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. Your initial purchase is only the beginning of Teledyne ISCO’s ongoing commitment to their customers.
The pump is in steady state as shown in the pressure ;ump setpoint chart in manual mode initially and then switched over the automatic control where the huge bump is. The D was the first Isco D-Series pump module, and our first syringe pump designed specifically for refilling under high pressure and pressure programming to handle supercritical fluids.
LabVIEW™ Driver | Chemyx Fusion Syringe Pumps
Why do you use the Autotuning version of PID? This occurs even if the original process value is close to the setpoint feeding the process value into the PID controller before running also does not help. You have set an I gain of 0. However caused and on any theory of liability, whether in contract, strict liability, or tort including negligence or otherwise arising in any way out of the use of the provided driver or software, even if advised of the possibility of such damage.
Oddly, the system appears to be the most stable with the PID parameters that I previously used in the screenshot before.
That’s THE typical behaviour of a issco P control loop: Here is some background information about the pump I am using: I’m unsure what else you require? I did this twice to show what happens when I transition back and forth.
LabVIEW™ Driver for Chemyx Fusion Syringe Pumps
Message 8 of 8. Message 2 of Getting Started Make sure that your computer meets the requirements. All Isco D-series pumps use the same controller laabview can operate any three pump modules, either independently or together.
Isco 260D Syringe Pump
Is this an option? Message 8 of Choice of seals can be ordered factory-installed. Message 5 of 8. I did find another forum thread with a similar issue, but none of the solutions posted there seemed to have helped me.