Pilz PNOZ m EF PDP Link Uživatelský manuál Strana 11

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Functiondescription
OperatingManualPNOZmEFPDPLink
1003019EN02
11
4 Functiondescription
4.1 Integratedprotectionmechanisms
Therelayconformstothefollowingsafetycriteria:
}
Thecircuitisredundantwithbuiltinselfmonitoring.
}
Thesafetyfunctionremainseffectiveinthecaseofacomponentfailure.
4.2 Functions
ThelinkmodulePNOZmEFPDPLinkisusedtosafelytransfertheinputinformationfrom
decentralisedmodulestothecontrolsystemPNOZmulti2.
Thefunctionoftheinputsandoutputsonthecontrolsystemdependsonthesafetycircuit
createdusingthePNOZmultiConfigurator.Achipcardisusedtodownloadthesafetycir
cuittothebaseunit.Thebaseunithas2microcontrollersthatmonitoreachother.They
evaluatetheinputcircuitsonthebaseunitandexpansionmodulesandswitchtheoutputs
onthebaseunitandexpansionmodulesaccordingly.
TheLEDsonthebaseunitandexpansionmodulesindicatethestatusoftheconfigurable
controlsystemPNOZmulti.
TheonlinehelponthePNOZmultiConfiguratorcontainsdescriptionsoftheoperating
modesandallthefunctionsofthecontrolsystem,plusconnectionexamples.
Dataexchange:
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Communicationwiththedecentralisedmodulesisviaasafedatalink.
}
ThelinkmodulePNOZmEFPDPLinkreadstheinputinformationfromthedecentral
isedmodulesaspartofeachcycleandthenforwardsittothebaseunit.
}
AttheendofaPNOZmulticycle,thebaseunitsendsitsoutputdatatoitslinkmodule.
Thisoutputdataisimmediatelysenttothedecentralisedmodules.
Linkingseveraldecentralisedmodules:
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Amaximumof4linkmodulescanbeconnectedtoabaseunitPNOZmulti2.
}
Amaximumof4decentralisedmodulescanbeconnectedtoalinkmodulePNOZmEF
PDPLink.
}
Ifadecentralisedmodulereceivesdataintendedforadifferentdecentralisedmodule
thatisconnected,thedataisforwardedwithoutbeingprocessed.
4.3 Systemreactiontime
Calculationofthemaximumreactiontimebetweenaninputswitchingoffandalinkedout
putinthesystemswitchingoffisdescribedinthedocument"SystemExpansion".
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