Fabios Posted March 8, 2011 Report Share Posted March 8, 2011 Hi, for reset integral error in a application with PID, i read status word and when it is = 7 or = 8 or = -4, i reset integral error. Is there other condition that require reset integral error? With best regards Fabio Quote Link to comment Share on other sites More sharing options...
Emil Posted March 8, 2011 Report Share Posted March 8, 2011 It's not right to define thhe things such a way. In ordinary PID operation, there must be no need at all for Reset Integral error. Most of local PID controllers have no such functions - and the customers even don't know about that. Usually PID doesn't need to come to status -4. In any specific system there is a need for investigating the reason and improve the parameters to pevent status -4. Just Reset integral error is not the right soluiton. Quote Link to comment Share on other sites More sharing options...
Fabios Posted March 8, 2011 Author Report Share Posted March 8, 2011 Hi Emil, you are right, in fact you must know that in the last year i've performed some tens pid with unitronics plc and i have not ever used reset integral error. With the current job, second my opinion, there is the possibility to fall in this problem. So i think that may need to use, so i'm informing on how to use this feature. That's all. With best regards Fabio Quote Link to comment Share on other sites More sharing options...
Fabios Posted March 9, 2011 Author Report Share Posted March 9, 2011 Thank you very much anyway!!! Quote Link to comment Share on other sites More sharing options...
Emil Posted March 9, 2011 Report Share Posted March 9, 2011 I stil think that there is no "constant rules", for sure not the "rules" you define there. It looks a little like "maybe I'll go ill someday - which medicine I need to take then?!". I prefer ot stay healthy and - in case of problem, to investigate the reasons and find specific soluitons. In short - I don't agree with the rules you define to reset Integral error. In case you have problems withh PID - let me know what the problem is and I'll addvice. Quote Link to comment Share on other sites More sharing options...
Fabios Posted March 9, 2011 Author Report Share Posted March 9, 2011 I no search "constant rules"! Why your R&D has made FB Integral reset? Can i have a complete guide on "FB Integral Reset"? Quote Link to comment Share on other sites More sharing options...
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