2 replies to this topic

[Daniel89]

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.

[zavtranguyen]

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.

[Daniel89]

 

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!