Delphin ProfiMessage - 4.7.14 PID controller; 4.7.14.1 Introduction to control technology; 4.7.14.1.1 Designations

ProfiMessage
Generate intermediate values(onlywithblockaveraging):Whenenabled,theres-
ultsbetweenthetriggereventsareimmediatelyoutputaftercalculation(witheach
newsourcevalue).
ReferalsotoTriggeroptions.
4.7.14 PIDcontroller
ThePIDcontrollerchannelsenablethecontinuouscontrolofaprocessvariable.
AvailablecontrollersareP,I,PIandPID.Additionalsettingsarealsoavailable,e.g.
deadzone,manipulatedvariablelimitetc.
Topics
4.7.14.1 Introductiontocontroltechnology
ThisSectiongivesyouanintroductiontocontroltechnologyinordertohelpyou
understandthePIDcontroller.
Topics
4.7.14.1.1 Designations
Control loop variables
w–referencevariable.Processvariablesetpointortargetvalue.
y–manipulatedvariable.Controlleroutputvalue.
x–controlvariable.Processvariabletobecontrolled..
xd–controldifferenceorcontroldeviation.Xd=W–X
z–interferencevariable.Interferenceinfluenceonprocessvariablebyprocess.
Control loop with controller and control paths:

Control parameter
Kp–proportionalamplification.ForcontrollerPcomponent.
Tn–resettime.ForcontrollerIcomponent.
Tv–derivativetime.ForcontrollerDcomponent.
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Delphin Technology AG
Dezember 2015
ProfiMessage Manual