Emerson IC200CX EVO - Double Set Point by Digital Input; Compensation of the Set Point

IC200CXEVO
usermanual
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6.3Doublesetpointbydigitalinput(optional)
Thedoublesetpointfunction(EnergySaving)allowstomodifytheregulationparametersviadigital
input(terminals160).
TheEnergysavingfunctionisenabledwhenadigitalinputconfiguredas“Energysaving”isactive.
WhentheEnergySavingfunctionisactive:
•tothesetpointisappliedanoffsetsetbyES14andES16parameters
 (differentforcoolingandheating);
•theregulationdifferentialissetbyES15andES17;
standarddifferentials(St07andSt08parameters)arenotusediftheEnergySavingisactive
IftheEnergysavingisactive,thefirstpressureofbuttonallowstoreadthesetpointsetby
parameterandsecondpressureallowstoreadtherealsetpoint(labelSetrsetmodifiedby
Energysavingfinction).
6.4Compensationofthesetpointbasedontheoutsidetemperature(optional)
Thecontrollerallowstheworkingsetpointoftheunittobechanged(compensated)automatically
basedontheoutsideairtemperaturemeasuredbyaprobeinstalledonthemachine.Thesummerset
pointandthewintersetpointcanbecompensatedseparately,whereasitisnotpossibleto
compensatethedomestichotwatersetpoint.Forthesettingsofthedynamicsetpoint,parameters
Sd01toSd06mustbechangedandthesecanbeaccessedatuserlevel(password1)accordingto
thesettingsindicatedinthefollowingsections.Pleaseseetherelevantsectionforthemethodsof
accessingtheparameters.
Summercompensation
Incoolingmode,itispossibletoincrease/decreasethevalueoftheworkingsetpoint(parameter
St01)byavalueproportionaltoparameterSd01.IfparameterSd01assumespositivevalues,there
willbeanincrease,andifitassumesnegativevalues,therewillbeadecrease.
Theproportionofincrease/decreaseaccordingtotheoutsideairtemperaturevalueiscontrolledbya
compensationstartsetpoint(parameterSd03),andbytherelevantdifferential(parameterSd05)that
canassumepositiveornegativevalues.
Thecompensatedvalueofthesetpointcannotexceedthelimitsoftheworkingsetpointinchiller
mode;itcanthereforeassumeavaluenolowerthanSt02andnohigherthanSt03.
WhenparameterSd01=0isset,thefunctionisdeactivated.
energysaving