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2

Low Or High Output Selector For A Valve In Dynamic Mode


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#1 Daniel89

Daniel89

    Junior Member

  • Members
  • 21 posts

Posted 04 October 2022 - 04:18 AM

Hi,

 

I am in dynamic mode in Unisim, and I have 2 PI regulators that has the same output object. I would like to have a L output selector to control the valve TG. 

 

Ie. having 2 controllers that regulates on different process variables, and that the lowest output off the two controls the actual TG valve opening.

 

I have tried with selector block and switch, but I do not succeed, and I don't find any useful information online. 

 

See link for screenshot from simulation to illustrate the issue: 

 

https://postimg.cc/ygNkSP4z

 

Appreciate all help! 

 

Best regards,

Daniel


Edited by Daniel89, 04 October 2022 - 04:22 AM.


#2 zavtranguyen

zavtranguyen

    Junior Member

  • Members
  • 28 posts

Posted 09 October 2022 - 04:29 AM   Best Answer

Hi,

 

I am in dynamic mode in Unisim, and I have 2 PI regulators that has the same output object. I would like to have a L output selector to control the valve TG. 

 

Ie. having 2 controllers that regulates on different process variables, and that the lowest output off the two controls the actual TG valve opening.

 

I have tried with selector block and switch, but I do not succeed, and I don't find any useful information online. 

 

See link for screenshot from simulation to illustrate the issue: 

 

https://postimg.cc/ygNkSP4z

 

Appreciate all help! 

 

Best regards,

Daniel

Hi, The "Selector" you want is available in Aspen Hysys, try to test with Hysys

https://postimg.cc/YGJGxDPB

Regards,


Edited by zavtranguyen, 09 October 2022 - 04:33 AM.


#3 Daniel89

Daniel89

    Junior Member

  • Members
  • 21 posts

Posted 18 October 2022 - 02:39 PM

 

Hi,

 

I am in dynamic mode in Unisim, and I have 2 PI regulators that has the same output object. I would like to have a L output selector to control the valve TG. 

 

Ie. having 2 controllers that regulates on different process variables, and that the lowest output off the two controls the actual TG valve opening.

 

I have tried with selector block and switch, but I do not succeed, and I don't find any useful information online. 

 

See link for screenshot from simulation to illustrate the issue: 

 

https://postimg.cc/ygNkSP4z

 

Appreciate all help! 

 

Best regards,

Daniel

Hi, The "Selector" you want is available in Aspen Hysys, try to test with Hysys

https://postimg.cc/YGJGxDPB

Regards,

 

 

 

Thank you a lot zavtranguyen ! This was exactly what I was looking for! 






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