Pilz PNOZ s50 User manual

PNOZs50
OperatingManual1002194EN02
Safetyrelays

Preface
Thisdocumentisatranslationoftheoriginaldocument.
AllrightstothisdocumentationarereservedbyPilzGmbH&Co.KG.Copiesmaybemade
forinternalpurposes.Suggestionsandcommentsforimprovingthisdocumentationwillbe
gratefullyreceived.
Pilz®,PIT®,PMI®,PNOZ®,Primo®,PSEN®,PSS®,PVIS®,SafetyBUSp®,
SafetyEYE®,SafetyNETp®,thespiritofsafety®areregisteredandprotectedtrademarks
ofPilzGmbH&Co.KGinsomecountries.
SDmeansSecureDigital

Content
OperatingManualPNOZs50
1002194EN02 3
Section1 Introduction 5
1.1 Validityofdocumentation 5
1.1.1 Retainingthedocumentation 5
1.2 Definitionofsymbols 5
Section2 Overview 7
2.1 Unitstructure 7
2.1.1 Scopeofsupply 7
2.1.2 Unitfeatures 7
2.2 Front/sideview 9
Section3 Safety 10
3.1 Intendeduse 10
3.2 Safetyregulations 12
3.2.1 Useofqualifiedpersonnel 12
3.2.2 Warrantyandliability 12
3.2.3 Disposal 12
Section4 Functiondescription 13
4.1 Introduction 13
4.2 Functions 13
4.2.1 Switchingthepowercircuitsonandoff(fastshutdown) 13
4.2.2 Switchingthepowercircuitsonandoff(slowshutdownS35,S36) 16
4.2.3 Conditionsforfastandslowshutdown 18
4.2.4 FeedbackloopY1,Y2 19
4.2.5 TestpulseoutputsT0,T1 20
4.2.6 SignalandstatusoutputsO3,O4,O5 21
4.2.7 Outputtest 22
4.3 Statusdisplay,configurationandmessages 22
4.3.1 Overview 22
4.3.2 Chipcard 23
4.4 Reactiontime 23
Section5 Installation 24
5.1 Generalinstallationguidelines 24
5.1.1 Dimensions 24
5.2 Mountingdistances 25
Section6 Commissioning 26
6.1 Wiring 26
6.1.1 Generalwiringguidelines 26
6.1.2 Pinassignment 26
6.1.3 Supplyvoltagefordevice 28
6.1.4 Supplyvoltageforpowercircuits 28
6.1.5 Powercircuit 29
6.1.6 Inputs 30
6.1.6.1 Fastshutdown 30
6.1.6.2 Slowshutdown 31

Content
OperatingManualPNOZs50
1002194EN02 4
6.1.7 Outputs 31
6.1.8 Feedbackloop 31
6.2 Displaymenuandconfiguration 32
6.2.1 Operaterotaryknob 32
6.2.2 Configuredevice 32
6.2.3 Passwordprotection 33
6.2.4 Usechipcard 33
6.2.4.1 Insertchipcard 34
6.2.5 Displayandconfiguration 35
6.2.5.1 Menuoverview 35
6.2.5.2 Operatemenusandentervalues 38
6.2.5.3 Displaymenuatcoldstart 39
6.2.5.4 Statusdisplayandconfiguration 41
6.2.5.5 Restartdevice 47
Section7 Operation 48
7.1 Displayelementsfordevicediagnostics 48
7.1.1 LEDdisplay 48
7.1.2 Display 49
7.1.2.1 Errorstackentries 49
7.1.2.2 Currenterrormessages 49
7.2 ResetI/OFault 55
Section8 Examples 58
8.1 Overview 58
8.2 Mechanicalholdingbrake 58
8.2.1 Properties 58
8.2.2 Configurationoverview 59
8.2.3 Connection 60
Section9 Technicaldetails 61
9.1 Safetycharacteristicdata 64
Section10 Supplementarydata 65
Section11 Orderreference 66
11.1 OrderreferencesModule 66
11.2 OrderreferencesAccessories 66
Section12 Appendix 67
12.1 Checklist 67

Introduction
OperatingManualPNOZs50
1002194EN02 5
1 Introduction
1.1 Validityofdocumentation
ThisdocumentationisvalidforthesafePWMrelayPNOZs50fromVersion1.0.0.Itisvalid
untilnewdocumentationispublished.
Thisoperatingmanualexplainsthefunctionandoperation,describestheinstallationand
providesguidelinesonhowtoconnecttheproduct.
INFORMATION
Thedeviceissuitableforactivatinginductiveloadswithinthespecification.
Theterminologyinthisdocumentationisbasedonasafemechanicalhold
ingbrake.Thisterminologycaneasilybetransferredtothephysicalcircum
stancesofotherapplications.
1.1.1 Retainingthedocumentation
Thisdocumentationisintendedforinstructionandshouldberetainedforfuturereference.
1.2 Definitionofsymbols
Informationthatisparticularlyimportantisidentifiedasfollows:
DANGER!
Thiswarningmustbeheeded!Itwarnsofahazardoussituationthatposes
animmediatethreatofseriousinjuryanddeathandindicatespreventive
measuresthatcanbetaken.
WARNING!
Thiswarningmustbeheeded!Itwarnsofahazardoussituationthatcould
leadtoseriousinjuryanddeathandindicatespreventivemeasuresthatcan
betaken.
CAUTION!
Thisreferstoahazardthatcanleadtoalessseriousorminorinjuryplus
materialdamage,andalsoprovidesinformationonpreventivemeasures
thatcanbetaken.

Introduction
OperatingManualPNOZs50
1002194EN02 6
NOTICE
Thisdescribesasituationinwhichtheproductordevicescouldbedam
agedandalsoprovidesinformationonpreventivemeasuresthatcanbe
taken.Italsohighlightsareaswithinthetextthatareofparticularimport
ance.
INFORMATION
Thisgivesadviceonapplicationsandprovidesinformationonspecialfea
tures.

Overview
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1002194EN02 7
2 Overview
2.1 Unitstructure
2.1.1 Scopeofsupply
}PWMrelayPNOZs50
}Connectionterminals(springloadedterminals)
}Chipcard
}Chipcardholder
}Documentationondatamedium
2.1.2 Unitfeatures
UsingtheproductPNOZs50:
PWMrelayforthesafeactivationofinductiveloads,e.g.valves,mechanicalholding
brakes.
Theproducthasthefollowingfeatures:
}Semiconductoroutputs
– 2dualpolefailsafepoweroutputs,ratedvoltages24Vor48VDC,e.g.formechan
icalholdingbrakes,valves
– Outputvoltagecanbereducedthroughpulsewidthmodulation(PWM)
– PotentialofthepoweroutputsconnectedtothesupplyvoltageB1/B2
– 1singlepolefailsafeoutputforerror
– 2singlepolefailsafeoutputsforstatusofthepowercircuits
– 2testpulseoutputs
– PotentialofthesinglepoleoutputsconnectedtosupplyvoltageA1/A2
}Semiconductorinputs
– 4failsafeinputsforactivatingthepoweroutputs(fastshutdownofpowercircuits)
– 2singlepolestandardinputsforactivatingthepoweroutputs(slowshutdownof
powercircuits)
– 2singlepolestandardinputsforfeedbackloops
PotentialofthesemiconductorinputsconnectedtosupplyvoltageA1/A2
}Supplyvoltage
– 24VDCfordevice
– Forpowercircuits,ratedvoltage24V,48VDC
Supplyvoltagefordeviceandpowercircuitareisolatedfromeachother
}Voltageoutput24VDC
PotentialconnectedtosupplyvoltageA1/A2
}Canbeconfiguredviathedisplayonthedevice
}Configurationisstoredonachipcard

Overview
OperatingManualPNOZs50
1002194EN02 8
}Display
– Numberofoperations
– Systeminformation
– Statusoftheinputsandoutputs
– Warninganderrormessages
}StatusandfaultLEDs
}Pluginconnectionterminals(springloadedterminals)

Overview
OperatingManualPNOZs50
1002194EN02 9
2.2 Front/sideview
2
4
3
A1 A2
Y1 O4
O3
A2Y2 O5
T0 T1
S11 A2
S36
S35S11 A2
X3X1
PNOZ s50 PNOZ s50
Run
Power
Out1
Out2
I/O Fault
Fault
B1 B2
O1+ Y20
Y11
Y10O1- Y21
Y23
Y13
Y12 Y22
X2X4
O2+ O2-
A1 A2
Y1 O4
O3
A2Y2 O5
T0 T1
S11 A2
S36
S35S11 A2
X3X1
B1 B2
O1+ Y20
Y11
Y10O1- Y21
Y23
Y13
Y12 Y22
X2X4
O2+ O2-
1
5
6
8
7
9
751500
000001 1.0
751500
000001 1.0
10
Fig.:Left:Sideview,centre:Frontviewwithoutcover,right:Frontviewwithcover
Legend:
}1:Chipcard
}2:ConnectionterminalX3
}3:ConnectionterminalX1
}4:Display
}5:4pinsocket(serviceonly)
}6:Rotaryknob
}7:Labellingstripwith:
– Ordernumber
– Serialnumber
– Hardwareversionnumber
– 2Dcode
}8:ConnectionterminalX2
}9:ConnectionterminalX4
}10:LEDs

Safety
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1002194EN02 10
3 Safety
3.1 Intendeduse
ThePWMrelayPNOZs50isdesignedforuseinsafetyrelatedapplications.
ThedevicemeetstherequirementsofENISO138491uptoPLeandENIEC62061upto
SILCL3.Forexample,itisdesignedforusewith
}Mechanicalholdingbrakes.
}Valves.
IntendeduseincludesmakingtheelectricalinstallationEMCcompliant.Theproductisde
signedforuseinanindustrialenvironment.Itisnotsuitableforuseinadomesticenviron
ment,asthiscanleadtointerference.
Thefollowingisdeemedimproperuseinparticular:
}Anycomponent,technicalorelectricalmodificationtotheproduct
}Useoftheproductoutsidetheareasdescribedinthismanual
}Useoftheproductoutsidethetechnicaldetails(seechapterentitled“TechnicalDe
tails”)
Pleasenotethefollowingsafetyguidelines:
Hazardanalysis
}Themachinemanufacturermustproduceahazardanalysisforthemachine.Hemust
takeappropriatemeasurestoensurethatunexpectedmovementsdonotleadtohaz
ardoussituationsforeitherpeopleorequipment.
Demandsonthesafetycontrolsystem
}ThePNOZs50mayonlybeoperatedinconjunctionwithahigherlevelsafetycontrol
system.
}Theoutputsonthesafetycontrolsystemusedtoactivatefastshutdownmustbetested
todetectshortsacrosscontactsandearthfaults.
}ThefaultsignaloutputO3mustbeevaluatedtogetherwithstatusoutputsO4(ifO1+/
O1isused)andO5(ifO2+/O2isused),ifthisisdemandedbytheplant/machine's
safetyrequirements.Processingofthesesignalsisusedtocheckthefeasibilityofthe
signalstates.Evaluationofthesesignalsmustbesuitabletoachieveasafecondition
fortheapplication.
Demandsontheconnected,inductiveload
}Theinductiveloadmustguaranteethedemandsonthesafetyfunctioninadeener
gisedstate.Forexample,inadeenergisedstateaconnectedsafebrakemustalways
beapplied,muststopahazardousmovementandmustpreventunintendedstartup.
Slowshutdownintheeventofafault
}Whendesigningasafeapplication,youshouldconsiderthataslowshutdowninstead
ofafastshutdownmaybeeffectiveintheeventofafault.Aconnectedbrakemayhave
alongerstoppingdistance.
Slowshutdown
}Thepowercircuit'sslowshutdownisnotsafetyrelated.Itmayonlybeusedwhenper
mittedbythehazardanalysis.

Safety
OperatingManualPNOZs50
1002194EN02 11
}Toshutdowntheinductiveloadsafely,thefastshutdownmustbeactivatedafterthe
slowshutdown.Thatwaytheloadhasadualpoleshutdown.
Measurestopreventunexpectedstartup
}Appropriatemeasuresmustbetakentopreventunexpectedstartuporunexpected
movementsfromplantstandstill.
Wiringmeasures
}TheeffectivecurrentatterminalsB1/B2tosupplythepowercircuitsmustnotexceed
10A.Thecablesmustbefittedwitha10Afuse,characteristicB/C.
}Thecablesfortheunit'ssupplyvoltage(A1/A2)mustbefittedwitha4Afuse,charac
teristicB/C.
}Thewiringmustbedesignedtoachievesufficientnoiseimmunityandprotection
againstemissionsintermsofEMC.PleasealsorefertoDINEN602041(Electrical
equipmentofmachines).
}Appropriatewiringmeasuresshouldbetakentoavoidearthfaultsandshortsbetween
contacts.
Display
}Thecorrectdisplayofconfigurationdataandmessagesarepartofthedevice'ssafety
concept.Ifthedisplayisfaulty(e.g.pixelsaremissing,faultylettersornumbers),the
devicemustbetakenoutofservice.
Themachinemanufacturermustcheckandverifythefunctionalityoftheemployedsafety
functions.
}Thesafetyfunctionsmayonlybecheckedbyqualifiedpersonnel.
Thesafetyfunctionmustbechecked
}Afterinitialcommissioning
}Afterchangingtheconfigurationofthesafetyfunctions
}AfterswappingthePNOZs50orconnectedequipment
Afullcheckcomprises
}Properexecutionoftheemployedsafetyfunctions
}Inspectionoftheparameters
Theresultofthecheckoneachsafetyfunctionmustbedocumentedinatestreport.This
testreportmustbesigned.
Regularchecks
ThePNOZs50usesappropriateteststoguaranteethatitfunctionssafely(seechapteren
titled"Functiondescription",under"Outputtest").Itdoesnottesttheentiresafetyfunction.
Youshouldcheckthisatregularintervals.Theaimoftheseregularchecksistouncover
anychangestotheplant/machine,safetyfunctionsandambientconditions.Inparticular
youshouldregularlycheckthefunctionoftheconnectedbrake.
Youmustcomplywiththerequirementsoftheapplicablenationalregulations.
Theintervalsyouselectwilldependontheapplication,theoverallsystemandtheassoci
atedriskanalysis.

Safety
OperatingManualPNOZs50
1002194EN02 12
3.2 Safetyregulations
3.2.1 Useofqualifiedpersonnel
Theproductsmayonlybeassembled,installed,programmed,commissioned,operated,
maintainedanddecommissionedbycompetentpersons.
Acompetentpersonissomeonewho,becauseoftheirtraining,experienceandcurrentpro
fessionalactivity,hasthespecialistknowledgerequiredtotest,assessandoperatethe
workequipment,devices,systems,plantandmachineryinaccordancewiththegeneral
standardsandguidelinesforsafetytechnology.
Itisthecompany’sresponsibilityonlytoemploypersonnelwho:
}Arefamiliarwiththebasicregulationsconcerninghealthandsafety/accidentpreven
tion
}Havereadandunderstoodtheinformationprovidedinthisdescriptionunder"Safety"
}Andhaveagoodknowledgeofthegenericandspecialiststandardsapplicabletothe
specificapplication.
3.2.2 Warrantyandliability
Allclaimstowarrantyandliabilitywillberenderedinvalidif
}Theproductwasusedcontrarytothepurposeforwhichitisintended
}Damagecanbeattributedtonothavingfollowedtheguidelinesinthemanual
}Operatingpersonnelarenotsuitablyqualified
}Anytypeofmodificationhasbeenmade(e.g.exchangingcomponentsonthePCB
boards,solderingworketc.).
3.2.3 Disposal
}Insafetyrelatedapplications,pleasecomplywiththemissiontimetMinthesafetyre
latedcharacteristicdata.
}Whendecommissioning,pleasecomplywithlocalregulationsregardingthedisposalof
electronicdevices(e.g.ElectricalandElectronicEquipmentAct).

Functiondescription
OperatingManualPNOZs50
1002194EN02 13
4 Functiondescription
4.1 Introduction
ThePWMrelayPNOZs50isusedforthesafetyrelatedshutdownofinductiveloads.
Ithastwopoweroutputstoactivatetwoindependent,inductiveloads.Eachpowercircuitis
switchedindependentlybytwoinputs.Twofeedbackloopsmonitortheswitchstatusofthe
inductiveloads.Twofailsafeoutputssignaltheswitchstatusoftheinductiveloadstothe
higherlevelsafetycontrolsystem.Afailsafefaultsignaloutputsignalsanyfaulttoahigher
levelsafetycontrolsystem.
Thedeviceisconfigurable.Alltheparameterscanbesetviaarotaryknobwithpushbutton.
Thestateoftheinputsandoutputs,theconfigurationandanyfaultsareshownonadis
play.Theconfigurationisstoredonachipcard.
Thereisanintegratedcounter,whichrecordsthenumberofoperationsforeachpowercir
cuit.
Blockdiagram
A1 A2
Y20 Y21 Y22 Y23
Power
=
B1 B2
O1-
O1+ O2+ O2-
Feed-
back
Y10 Y11 Y12 Y13
Inputs
fast
O3 O4 O5
S35
Y1 Y2
Feed-
back
T0 T1
Inputs
fast
S36
Input
slow Input
slow
Supply
S11
Logic
=
Fig.:Blockdiagram
Potentialisolation,potentialconnection:
}PotentialisolationbetweenthesupplyvoltagesA1/A2andB1/B2.
}PotentialconnectionbetweenthepoweroutputsO1+/O1,O2+/O2andthesupply
voltageB1/B2.
}Potentialconnectionbetweenthesemiconductorinputsandsinglepoleoutputs,
voltageoutputandsupplyvoltageA1/A2.
4.2 Functions
4.2.1 Switchingthepowercircuitsonandoff(fastshutdown)
ThedevicehastwosafedualpoleoutputsO1+/O1(powercircuit1)andO2+/O2(power
circuit2),whichcanbeswitchedusinginputsY10/Y11(powercircuit1)andY20/Y21
(powercircuit2):

Functiondescription
OperatingManualPNOZs50
1002194EN02 14
}Switchon(brakeisventilated):
– O1+/O1isswitchedonwhenthereisa"1"signal(24VDC)atY10andY11.
– O2+/O2isswitchedonwhenthereisa"1"signal(24VDC)atY20andY21.
– Partialoperationisnottimemonitored.Anoutputwillnotswitchuntilboththecor
respondinginputsare"1".
}Switchoff(brakeisapplied):
– O1+/O1isswitchedoffsafelywhenthereisa"0"signal(0VDC)atY10and/or
Y11.
– O2+/O2isswitchedoffsafelywhenthereisa"0"signal(0VDC)atY20and/or
Y21.
INFORMATION
Pleasenotethatwhenusingfastshutdown,theinputsforslowshutdown
(S35andS36)musthavea"1"signal.
Powercircuit1 Y10 Y11 O1+,O1
1 1 1 Loadundercurrent(powercircuit1
switchedon)
1 0 0 Loadwithoutcurrent(powercircuit
1switchedoff)
0 1 0
0 0 0
Powercircuit2 Y20 Y21 O2+,O2
1 1 1 Loadundercurrent(powercircuit2
switchedon)
1 0 0 Loadwithoutcurrent(powercircuit
2switchedoff)
0 1 0
0 0 0
ThepowercircuitsaresuppliedviatheterminalsB1/B2withthevoltageUB1B2(voltage
range:ratedvoltage24,48VDC).
INFORMATION
Max.currentatthepowercircuits
ItisessentialtonotethattheeffectivecurrentatterminalsB1/B2tosupply
thepowercircuitsmustnotexceed10A.Thecablesmustbefittedwitha
10Afuse,characteristicB/C.
Bothpolesareswitched(e.g.O1+,O1).

Functiondescription
OperatingManualPNOZs50
1002194EN02 15
INFORMATION
AtthesafeinputsY10andY11/Y20andY21,a"0"signalmustbepresent
beforethecorrespondingoutputO1+/O1/O2+/O2canbeswitchedbya
"1"signalatbothinputs.Ifthisisnotthecase,afaultissignalledandthe
LED"Out1"or"Out2"flashes(thediagrambelowillustratesthis,usingthe
dualpoleinputY10/Y11andtheoutputO1+/O1asanexample).
O3
Fig.:StartupconditionforinputsY10/Y11
INFORMATION
Pleasenote:InputsY10/Y11switchoutputO1+/O1;inputsY20/Y21switch
outputO2+/O2.Intheeventofafault,however,bothoutputswillswitchoff.
StatusoutputsO4/O5alsoswitchoff,irrespectiveoftheswitchstatusofthe
inductiveload.Atthetimeaninput,e.g.Y11,isswitchedon,iftheotherin
put,e.g.Y10,isnotat"0",thefaultsignaloutputO3willsignalafaultviaa
"0"signal.
AftertheoutputO1+/O1and/orO2+/O2isswitchedon,thevoltageUB1B2isavailablefora
configurableoverexcitationtimeUover.Oncetheoverexcitationtimetoverhaselapsed,the
voltageisreducedthroughpulsewidthmodulation(PWM).Theoverexcitationtimetoverand
thereducedvoltageUAvgareconfiguredviathedisplay.
INFORMATION
Theoverexcitationtimetovercanalsobeswitchedoffforeachpowercircuit.
Inthiscase,theoutputvoltageofthepowercircuitsO1+/O1and/orO2+/
O2equalsthesupplyvoltageUB1B2.

Functiondescription
OperatingManualPNOZs50
1002194EN02 16
tover
UB1B2
UAvg
Y10, Y11
Y20, Y21
01+, 02+
t
t
ton toff
Fig.:Switchingthepowercircuitsonandoff
Legend:
}Y10,Y11,Y20,Y21:SafeinputstoswitchtheoutputsO1+,O2+
}O1+,O2+:Safeoutputs,powercircuit1and2
}UB1B2:Supplyvoltageofpowercircuits
}ton:Switchonpowercircuit
}tover:Configuredoverexcitationtime
}toff:Switchoffpowercircuit
}UAvg:Configuredreducedvoltage(arithmeticmeanofthevoltageattheoutputsonce
theoverexcitationtimehaselapsed)
InputsY10,Y11(orY20,Y21)canbeactivatedviasinglepoleordualpolesafeoutputs.
INFORMATION
Detailsofthewiringcanbefoundinthechapterentitled"Commissioning",
under"Wiring".
4.2.2 Switchingthepowercircuitsonandoff(slowshutdownS35,S36)
Iftheswitchingtimesarenotcritical,theloadsatthepowercircuitscanalsobeshutdown
slowly.Aconnectedbrakeispermittedtohavelongerapplicationtimes,forexample.The
brakeswitcheswithlowernoiseandislowerwearing.
NOTICE
Thepowercircuit'sslowshutdownisnotsafetyrelated.Itmayonlybeused
whenpermittedbythehazardanalysis.
Toshutdowntheinductiveloadsafely,thefastshutdownmustbeactivated
aftertheslowshutdown.Thatwaythebrakehasadualpoleshutdown.
A1/0pulseedgeatoneoftheslowshutdowninputs(S35orS36)switchesoffthecorres
pondingpowercircuit(O1+,O2+)insinglepolemode.Aflywheeldiodemeansthatthecur
rentonlydissipatesthemagneticfieldslowly.

Functiondescription
OperatingManualPNOZs50
1002194EN02 17
INFORMATION
Pleasenotethatwhenusingslowshutdown,theinputsforfastshutdown
(Y10/Y11andY20/21)musthavea"1"signal.
Powercircuit1 S35 O1+,O1
1/0pulseedge Switchesoffpowercircuit1
Powercircuit2 S36 O2+,O2
1/0pulseedge Switchesoffpowercircuit2
INFORMATION
Pleasenote:InputS35switchesoutputO1+/O1;inputS36switchesoutput
O2+/O2.Intheeventofafault,however,bothoutputswillswitchoff.
INFORMATION
Ifslowshutdownisnotbeingused,24VDCmustbepermanentlyappliedto
terminalsS35andS36(seesectionentitled"Conditionsforfastandslow
shutdown").

Functiondescription
OperatingManualPNOZs50
1002194EN02 18
4.2.3 Conditionsforfastandslowshutdown
Toshutdownthepowercircuits,thefollowingconditionsmustbemet:
Shutdown Y10/Y11 S35 O1+/O1
Fast 1/0pulseedge 1 >0
Slow 1 1/0pulseedge >0
Shutdown Y20/Y21 S36 O2+/O2
Fast 1/0pulseedge 1 >0
Slow 1 1/0pulseedge >0
Y10/Y11
Y20/Y21
t
S35
S36
t
O1+/O1-
O2+/O2-
t
Fast Slow
t1t2
Fast
Slow
t3t4
Fig.:Conditionsforfastandslowshutdown
NOTICE
Pleasenotethatafastshutdownhaspriorityoveraslowshutdown.Onlya
fastshutdownissafetyrelated.
Legend:
}Fast:Fastshutdown
}Slow:Slowshutdown
}t1:andt3Switchon:Y10,Y11,S35=1,O1+/O1switcheson;Y20,Y21,S36=1,O2+/
O2switcheson
}t2:Fastshutdownvia1/0pulseedgefromY10/Y11orY20/Y21
}t4:Slowshutdownvia1/0pulseedgefromS35orS36
NOTICE
Pleasenotethatifthereisafaultonthenegativepole(O1,O2)ofthe
powercircuit,theloadonlyshutsdowninsinglepolemode.Theloadwill
onlyexecuteaslowshutdown.Thereactiontimeoftheoverallapplication
maybeextendedaccordingly.

Functiondescription
OperatingManualPNOZs50
1002194EN02 19
4.2.4 FeedbackloopY1,Y2
Theoperatingstateoftheinductiveloadcanbeuploaded,forexample,via
}Microswitches
}Proximityswitches
}Hallsensors
NOTICE
ThedevicemayonlybeoperatedifthefeedbackloopsY1andY2evaluate
theswitchstateoftheconnectedequipment.Thefeedbackloopsmustbe
monitoredcontinuouslyfromthemomenttheventilationtimeelapsesuntil
theoutputshutsdown.Thedevicemaynotbeoperatedunlessthefeed
backloopsareconnected.
Equipmentwithareactiontimeof<3mscannotbeused.Thedevice
switchestothe"I/OFault"state.
ThefeedbackloopcanbeconfiguredforN/CorN/Ocontacts.
The24VvoltageoutputsS11ofthePNOZs50canbeusedtoprovidethe24VDCsupply
totheequipmentinthefeedbackloop.Thisisonlypermittediftestpulsesarenotused.
Otherwiseawiringerrorwillberegistered.
Thefeedbackloopwillonlybeevaluatedafteramax.ventilationandapplicationtime,
whichistobeconfigured.Contactbounceduringapplicationorventilationoftheequipment
isignored.
}Max.ventilationtime:Periodwithinwhichtheloadmustbeventilatedoncethepower
circuitisswitchedon.
}Max.applicationtime:Periodwithinwhichtheloadmustbeappliedoncethepowercir
cuitisswitchedoff.
Themax.ventilationandapplicationtime,plustheswitchonbehaviour(N/C/N/O)are
configuredviathedisplay.Themax.applicationtimeisconfiguredseparatelyforslowand
fastshutdown.Themax.ventilationtimeisconfiguredjointlyforslowandfastshutdown.

Functiondescription
OperatingManualPNOZs50
1002194EN02 20
Tover
UB1B2
UAvg
S35, S36
Y10, Y11
Y20, Y21
01+, 02+
t
t
Y1, Y2
t
Ton Toff
ton toff
O4, O5
t
Fig.:Ventilationandapplicationtime
Legend:
}Y10,Y11,Y20,Y21:SafeinputstoswitchtheoutputsO1+/O1,O2+/O2
}O1+,O2+:Safeoutputs,powercircuit1and2
}UB1B2:Supplyvoltagetothepowercircuits
}ton:Switchonpowercircuit
}tover:Configuredoverexcitationtime
}toff:Switchoffpowercircuit
}UAvg:Configuredreducedvoltage(arithmeticmeanofthevoltageattheoutputsonce
theoverexcitationtimehaselapsed)
}Y1,Y2:Feedbackloops
}Ton:Configureddurationofmax.ventilationtime
}Toff:Configureddurationofmax.applicationtime
}O4,O5:Failsafeoutputsforstatusoftheload,changeinstateafterTonandToffhave
elapsed
4.2.5 TestpulseoutputsT0,T1
FeedbackloopsY1andY2canbeassignedtestpulses.ThePNOZs50has2testpulse
outputs,T0andT1.
INFORMATION
Thefeedbackloopcanonlyusetestpulsesifmechanicalswitchesareused
tofeedbacktheswitchstatus.