ersanjit
Member
Folks,
I would like to get some ideas/suggestions on how to use PIDE/P_PIDE in best way for my H&V system.
I have one feedback: Temperature transmitter from the room and
I have 3 outputs that I need to control. When the temperature drops below setpoint then I want the bypass damper for the economizer to open, lets say I use a PIDE instruction for this. Then how do I use more PIDE instructions for my other outputs. The next output is a economizer damper (2nd PID) which should open once bypass damper is 100% open and that first PID loop cant still match the setpoint at 100% Controller output.
If I am still below setpoint and both the PID loops are at 100% CO or both bypass and economizer dampers are open, I want to start opening the steam valve to allow the steam coils (3rd PID) to do the magic.
I am thinking to use PIDE cascade feature to help out here but I am not use how to use it or if you guys have any better mature solution to control this system?
Please advice. In a nutshell, the system has 3 different steps which needs to be activated in sequence once temp. starts dropping.
I would like to get some ideas/suggestions on how to use PIDE/P_PIDE in best way for my H&V system.
I have one feedback: Temperature transmitter from the room and
I have 3 outputs that I need to control. When the temperature drops below setpoint then I want the bypass damper for the economizer to open, lets say I use a PIDE instruction for this. Then how do I use more PIDE instructions for my other outputs. The next output is a economizer damper (2nd PID) which should open once bypass damper is 100% open and that first PID loop cant still match the setpoint at 100% Controller output.
If I am still below setpoint and both the PID loops are at 100% CO or both bypass and economizer dampers are open, I want to start opening the steam valve to allow the steam coils (3rd PID) to do the magic.
I am thinking to use PIDE cascade feature to help out here but I am not use how to use it or if you guys have any better mature solution to control this system?
Please advice. In a nutshell, the system has 3 different steps which needs to be activated in sequence once temp. starts dropping.