Manual

EMO‐3000
OperationandProgrammingManual
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11
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MonitorMode(operatingmode=01)
MonitorModeisusedforapplicationswhereitisimportantonlytomonitorflowratesandtotals.This
modealsoprovidesanalogandlimitoutputs.Thepro grammablelimitvaluesturnarelaycontacteither
ONorOFF.The4‐20mAor0‐5voltanalogoutputscanbescaledto
theflowrateorthetotal,whichcan
berecordedinstripchartform,asadigitalrecording,orsenttoaPLCviatheserialcommunicationlink.
Ifonlyflowrateandtotalizationarerequired,entertheprogrammingmode(F4),selectGeneralA(F2)
andprogramthedesiredvariables
(seepage24forspecificdetails).Orforuseofgenericflowrateand
totalizationfactorsandengineeringunits,enter theQuickProgrammin gselection (s eepage32).
Ifanalogoutputsorlimitsaretobeusedinthemonitormode,programthefollowingadditional
variables:
 ANALOGGAINFACTOR:Scalesthe
mAorthevoltageout.
 POINTER:Addressforthevariablethatshouldbeexpressed.
 OFFSET:AprogrammedmAmporvoltageoutput,whichcorrespondstoazeroinputfrequency.
 LIMITOUTPUTS:Seepage15forfurtherprogramming.
Whenshipped,thechannelcardsare inmonitormode.However,the
4opto‐couplers,pins11,12,13
and14aresetforthePIDmodeinthatthreeofthemareinputsandoneisanoutput.Apincanbe
eitheraninputoranoutputdependingonthewaytheopto‐couplerchipisset.Ifyouselectthe
monitor
modeandwishtousethelimits,thenmovetheopto‐couplerchipstomakethepinsfunctional.To
changetheInput/Outputchips,refertotheINPUT/OUTPUTsectiononpage14.
PIDMode02(operatingmode=02)
ThePIDmode02isdesignedtocontrolfluidflows.TohavetheEMO‐3000operateinPID,itisnecessary
toprepareseveralPIDvariables.
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Beforechangingmodesandvariables,disconnectthecontrolvalvesandallcontrolsignals(suchashold,
transparent,etc.).
ImportantVariablestoProgramforPIDOperation
(FordetailsaboutprogrammingtheEMO‐3000withtheDM‐3000,seepage23.)
Proportional Thisfactordeterminesthestrength(orstiffness)oftheclosedloop
control.Inmany
cases,onlyexperimentationcandeterminethisfactor.Startwitharelativelylownumber(between10
and20);toolargeanumbercancauseoscillations.
Notice