10/1/2011 1:47 PM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating: (1365) |
Dear R&H CO
Due to required constant time between 2 successive call of function, it is necessary to use cyclic interrupts provided by controller(OB3X).
As mentioned in the manual,DISV is used in feedforward control. To get more information about this kind of control search Google .Check the following link as a sample: http://en.wikipedia.org/wiki/Feedforward_Control Best regards |
Last edited by: hdhosseini at: 10/12/2011 9:13 PMLast edited by: hdhosseini at: 10/1/2011 3:08 PM |
|
This contribution was helpful to2 thankful Users |
10/3/2011 7:11 PM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating: (1365)
|
Dear R&H CO. I think it is necessary to initialize internal parameters of PID controller algorithm by setting COM_RST, it is a common practice to do this in OB100.Also possible to put the controller in manual value in case of OB100 execution. Also check the following tip for behaviour of PID controllers in case of power failure. Pitfalls of PID controllersBest regards |
Last edited by: hdhosseini at: 10/3/2011 7:13 PM |
|
This contribution was helpful to1 thankful Users |
3/6/2014 11:29 AM | |
Posts: 340 Rating: (6) |
new question is splittet to i have two PV, two setpoints (SP) in eed two PID process varables?. |
Follow us on