Easy Electronics xLogic Micro PLC - Page 200

200
:Samplingtime,durationofatimeslice
:Integraltime;bymeansofthistimetheinfluenceoftheintegralpartis
controlledonthemanipulatedvariable,alsoknownastheintegral-actiontime
:Looperroratthetimen
Thefollowingpictureshowsajumpinprocessvalueandstepresponseofthecontroller:
Summary
ThePIcontrollerhasthefollowingcharacteristics:
ThePcontrollercomponentsquicklyinterceptanoccurringlooperror.
TheIcontrollercomponentscanthenremedytheremaininglooperror.
ThecontrollercomponentssupplementeachothersothatthePIcontrollerworksquicklyand
precisely.
Descriptionoftheindividualparameters
Controllerparameters PortrayedinxLogic PossiblevaluerangeinthexLogic
MnManipulatedvariable
atthetimen
OutputofthePIcontrollerblock 0to1,000
kP
GainofthePpart
kI
GainoftheIpart
InthexLogic,theparameterKC
appliesasanincreasefortheIpart
andthePpartofthecontroller
equally.
ShouldyouenterKC=0,thentheP
partofthecontrollerswitchesoff.In
thisspecialcase,kisautomatically
setto1fortheIpart.IfKC=0:kP=
0.00to99.99