Emerson MICRO MOTION 2700 - 1.4 Additional documentation and resources

Integratethemeterwiththecontrolsystem
2.2.2CongureLowerRangeValue(LRV)andUpperRangeValue(URV)
Display
OFF-LINEMAINT→OFF-LINECONFG→CHA→AO14mA
OFF-LINEMAINT→OFF-LINECONFG→CHA→AO120mA
OFF-LINEMAINT→OFF-LINECONFG→IO→CHC→AO24MA
OFF-LINEMAINT→OFF-LINECONFG→IO→CHC→AO220MA
ProLinkII
ProLink→Conguration→AnalogOutput→PrimaryOutput→LowerRangeValue
ProLink→Conguration→AnalogOutput→PrimaryOutput→UpperRangeValue
ProLink→Conguration→AnalogOutput→SecondaryOutput→LowerRangeValue
ProLink→Conguration→AnalogOutput→SecondaryOutput→UpperRangeValue
Communicator
5,3,1,2
DetailedSetup→CongOutputs→AnalogOutput1→RangeValues
5,3,2,2
DetailedSetup→CongOutputs→AnalogOutput2→RangeValues
TheLowerRangeValue(LRV)andUpperRangeValue(URV)areusedtoscalethemAoutput,
i.e.,todenetherelationshipbetweenmAOutputProcessVariableandthemAoutputlevel.
ThemAoutputusesarangeof4–20mAtorepresentmAOutputProcessVariable:
▪LRVspeciesthevalueofmAOutputProcessVariabletoberepresentedbyanoutputof4mA.
▪URVspeciesthevalueofmAOutputProcessVariabletoberepresentedbyanoutputof
20mA.
▪BetweenLRVandURV,themAoutputislinearwiththeprocessvariable.
▪IftheprocessvariabledropsbelowLRVorrisesaboveURV,thetransmitterpostsanoutput
saturationalarm.
EntervaluesforLRVandURVinthemeasurementunitsthatareconguredformAOutput
ProcessVariable.
Notes
▪YoucansetURVbelowLRV.Forexample,youcansetURVto50andLRVto100.
▪Fortransmittersoftwarev5.0andlater,ifyouchangeLRVandURVfromfactorydefault
values,andyoulaterchangemAOutputProcessVariable,LRVandURVwillnotberesetto
thedefaultvalues.Forexample,ifyouconguremAOutputProcessVariableasmassow
andchangetheLRVandURVformassow,thenyouconguremAOutputProcessVariable
asdensity,andnallyyouchangemAOutputProcessVariablebacktomassow,LRVand
URVformassowareresettotheconguredvalues.Inearlierversionsofthetransmitter
software,LRVandURVwereresettofactorydefaultvalues.
DefaultvaluesforLowerRangeValue(LRV)andUpperRangeValue(URV)
EachoptionformAOutputProcessVariablehasitsownLRVandURV.Ifyouchangethe
congurationofmAOutputProcessVariable,thecorrespondingLRVandURVareloadedand
used.
DefaultLRVandURVsettingsarelistedinT able2-3.
Table2-3DefaultvaluesforLowerRangeValue(LRV)andUpperRangeValue(URV)
ProcessvariableLRVURV
Allmassowvariables−200.000g/sec200.000g/sec
Allliquidvolumeowvariables−0.200l/sec0.200l/sec
6
MicroMotionModel2700TransmitterswithIntrinsicallySafeOutputs