epro MMS 6000 - Signal outputs; Output of characteristical values; EO Voltage outputs characteristical value; Dynamic outputs

 MMS6110Directionforuse 
 Functiondescription  Page32
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tionandcut-offfrequenciesofhigh-passandlow-passfilterarealsodefinedduringthemoni-
torconfiguration.
Ifthemeasuringchainsareusedinhazardousareas,onlysafetybarriersaccordingtothein-
structionsoftheDirectionforusesforsensorsandconvertersmaybeusedforinstal-lationin
measuringandsupplycircuits.Duringconfiguration,thetypesofbarriersandtheirseriesre-
sistancehavetobeenteredandwillbetakenintoaccountbythemonitorsoftware.
4.2 Signaloutputs
4.2.1 Outputofcharacteristicalvalues
ThemonitorhastwoanalogoutputsforcharacteristicalvaluesI1+(z18)/I1-(b18)undI2+
(z20)/I2-(b20)forimpressedcurrentsofeither0...20or4...20mA.Inthedualchannel
modethecurrentoutputsareassignedtotherelevantchannel.InoperatingmodesS
max
and
S
PPmax
eachoftheoutputsprovidethesamecurrentinparallel.
Iftheoutputcurrenthasbeenconfiguredto4...20mA,acharacteristicalvalue"0"corres-
pondstoanoutputcurrentof4mA.Ifinpropertypagechannelswitchcurrentsup-
pressionhasbeenactivated,achannelormodulefaultwillcausetheoutputcurrenttobe
setto0mA(refertosection4.5Conditionmonitoring).Incasethatinoneoftheoperating
modesSmaxorSppmaxameasuringchainisdisturbed,themeasuringresultofthischannel
willbesetto0mA.Onlythemeasurementoftheundisturbedchannelisusedforthecalcula-
tionofthecharacteristicalvalue.
4.2.2 EOVoltageoutputscharacteristicalvalue
OutputsEO1(d14)undEO2(d16)provideanoutputvoltageof0...+10Vproportionaltothe
shaftvibrationaccordingtotheconfigurationofthecharacteristicalvalueforthedualchan-
nelmode.InoperatingmodesS
max
undS
PPmax
theoutputvoltage0...10Vcorrespondsto
EO1resp.EO2thesinglechannelmeasuringresultswithidenticalmeasuringrangeandsig-
nalevaluationasthecombinedcharacteristicalvalue.
TheEOoutputsmainlyservethecombinationwiththeEIinputs,howeverthisfeatureisnot
effectivefortheMMS6110shaftvibrationmonitor.Whenthesevoltageoutputsareusedto
providecharacteristicalvaluesforindicationpurposesorforfurtherprocessing,itmustbe
takenintoaccountthattheseoutputshavearesolutionof8bit(resolutionofcurrentoutputs
=16bit).
4.2.3 Dynamicoutputs
ThetwodynamicouputsAC1(z14)andAC2(z16)providethedynamicpartofthemeasur-
ingsignal.Theinputsignalisfedtoalow-passfiltertodividedynamicandstaticpartofthe
signalinordertoprovidetheoriginaldynamicsignalforafrequencyanalysis,e.g.withan
analysissystem,inthefrequencyrangeof0,1...16kHz.Theoutputvoltages0...20Vppcor-
respondtotheconfiguredrangeofthecharacteristicalvariable.
4.2.4 Scaledd.c.outputs
Thescaledd.c.outputsNGL1(z12)andNGL2(d12)providead.c.voltageintherange
0...+10whichisproportionaltothedistancebetweensensorandmeasuringtarget(machine
shaft).Themeasuringrangeisdefinedbythelinearoperatingrangeforthissensorentered