MorphuisOGrady
Member
Good morning,
I have a question and I don't really know what you would call this....
I have 2 tanks which I need to control the level or froth in. Each with its own level transmitter and control valve to empty it. No control of feed. By opening the control valve in tank1 releases contents into tank 2.
Using an AB Logix5000 plc and PIDE instructions this is easily achievable until...
I need to implement some sort of strategy that if there was a disturbance on feed, i.e a large inrush flow to tank 1 due to plant instability that the control valve in tank2 reacts quicker to get the level down despite the level not been high YET.
Does this make sense? I want the PID control of tank 2 to disregard it's own PV and get the level down in anticipation for a high flow thats coming based on whats happening in tank 1.
I apologize in advance if the process description is vague.
I have a question and I don't really know what you would call this....
I have 2 tanks which I need to control the level or froth in. Each with its own level transmitter and control valve to empty it. No control of feed. By opening the control valve in tank1 releases contents into tank 2.
Using an AB Logix5000 plc and PIDE instructions this is easily achievable until...
I need to implement some sort of strategy that if there was a disturbance on feed, i.e a large inrush flow to tank 1 due to plant instability that the control valve in tank2 reacts quicker to get the level down despite the level not been high YET.
Does this make sense? I want the PID control of tank 2 to disregard it's own PV and get the level down in anticipation for a high flow thats coming based on whats happening in tank 1.
I apologize in advance if the process description is vague.