epro MMS 6000 - Channel supervision; Overload - supervision; Channel Clear LEDs; Channel Clear Outputs

 MMS6110Directionforuse 
 Functiondescription  Page36
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4.5.1 Channelsupervision
Thedcvoltageoftheinputsignalischecked.Iftheinputvoltageexceedstheupperlimitof
thesensoroperatingrange+0,5V,enteredduringtheconfiguration,orifitfallsbelowthe
lowervalue-0,5V,achannelerrorwillbeindicated.
4.5.2 Overload-supervision
Iftheamplitudeofthedynamicsignalexceedsthemeasuringrangedefinedduringconfigu-
ration(plusapprox.1%),anOverloadmessagewillbegiven.
4.5.3 ChannelClearLEDs
Duringthecorrectmeasuringandsupervisionoperation,theChannelClearLEDsshowa
steadygreenlight.
TheChannelClearLEDsoperateindependentlyforeverychannel,i.e.duringachanneler-
rororduringthedelaytimeafterachannelerrorthiswillbeindicatedbytherelevantChannel
ClearLED.
Inprincipal,delaytimesandmodulefaultsaresignalledbybothLEDs.
Thetableinsection4.5.5showsthesignalizationdependingondifferentoperatingmodes.
4.5.4 ChannelClearOutputs
ThetwoChannelClearoutputsareopen-collectoroutputsandgalvanicallyisolatedfrom
eachotherandfromtheremainingcircuitsofthemodule.Thustheswitchingfunctionofthe
outputisonlygivenwithanexternalsupply.
channel1C1-C,C1-E(z26,z28) channel2C2-C,C2-E(z30,z32)
Duringcorrectmeasuringoperationsandwhenthesupervisionfunctiondoesnotindicatea
moduleerror,thecollector-emitterlineoftheChannelClearoutputtransistorsarecon-
ducting-i.e.theyoperateaccordingtotheclosedcircuitmode.Incaseofadisturbanceof
therelevantchannelorduringthedelaytimesafteranerror,thecollectoremitterlineofthe
outputisopen(seetableinsection4.5.5).Incaseofamodulefaultorduringdelaytimesaf-
teramodulefault,bothChannelClearoutputsareswitchedoff.
IfseveralCHANNELCLEARoutputsaretobeconnectedinseries,ithastobetakeninto
accountthateachoftheoutputstakesasaturationvoltageofmax.1.5V.Forthisreason,
notmorethanfouroptocoupleroutputs(C-E)shouldbeconnectedinseries,whendrivinga
REL020with24Vrelaysupply.WhenusinganREL010,upto8C-Eoutputsandwiththe
REL054upto12C-E-outputsmaybeconnectedinseries.
4.5.5 Effectofthemodulesupervision
FunctionChannelClear(CC)LEDs
 Steadylight

OK-State
0 Off
_____________
Faultstate
FS Flashingslowly0,8Hz,2:1
____
Channelstate
FQ Flashingquickly1,6Hz,1:2
________
Modulestate