M
I am trying to control the temperature of a Dehyration column using two PID controllers. One PID loop controls the Temperature using steam flow. The other loop controls the steam pressure. Both are using an air actuated valve.
The loops seem to fight each other and the temperature loop takes a long time for changes to take effect. As the temperature valve opens, the pressure valve has to open also, because the pressure drops.
I have tried running the pressure loop in manual, but the pressure drops out as the temperature valve opens.
Any suggestion on how to configure the temperature and pressure PID loops? Thanks
Marty
The loops seem to fight each other and the temperature loop takes a long time for changes to take effect. As the temperature valve opens, the pressure valve has to open also, because the pressure drops.
I have tried running the pressure loop in manual, but the pressure drops out as the temperature valve opens.
Any suggestion on how to configure the temperature and pressure PID loops? Thanks
Marty