Mike,
you should connect the output control function of the controller to its own input control function (Input number 4). Also, you should increase the value of parameter 1, to the default value at least (the influence of this parameter is explained at the type 2 documentation, I recommend you to read it, together with the generic section for controllers at the trnsys help)
Regards
Angel2011/9/19 Michael Bissett <mikebiscuit@gmail.com>
_______________________________________________Dear TrnsysI am experiencing problems with a simple type 2b controller.I am using a solar collector type 564bI am trying to compare the temperature of the output of the collector with output of the tank, getting a temperature difference. I have set the dead band from 4-10 degrees C.In the simulation as the temperature rises to 10degrees difference, the control signal is 1 switching the pump on correctly. but after this the controller only switches every time step. I have tried shortening the time step... and changing other parameters.. still with no success.I have attached the file.Yours SincerelyMike BissettDepartment of Electrical EngineeringUniversity of Cape TownSouth Africa
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Àngel Carrera
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