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FunctionDescription

OperatingManualPNOZmEFMultiLink

1003018EN02

4 FunctionDescription

4.1 Integratedprotectionmechanisms

Therelayconformstothefollowingsafetycriteria:

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Thecircuitisredundantwithbuiltinselfmonitoring.

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Thesafetyfunctionremainseffectiveinthecaseofacomponentfailure.

4.2 Functions

ThelinkmodulePNOZmEFMultiLinkisusedtosafelytransfertheinputinformationfrom

32virtualinputsand32virtualoutputsbetweentwoPNOZmultisystems.Onelinkmodule

isassignedtoeachbaseunit.Dataisexchangedcyclically.

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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Dataisexchangedcyclically.

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AftertheendofaPNOZmulticycle,eachbaseunitsendsitsoutputdatatoitslinkmod

ule.Thisoutputdataisimmediatelysenttothelinkmoduleontheotherbaseunit.

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Atthesametime,thebaseunitreadstheinputdatafromthelinkmodule.

Connectionofmultiplebaseunits:

Anynumberofbaseunitscanbeconnectedvialinkmodules.Twolinkmodulesarere

quiredforaconnectionbetweentwobaseunits.However,onlyamaximumof4linkmod

ulesmaybeconnectedtoanyonebaseunit.

Virtualinputsandoutputs:

InputsandoutputsforbothPNOZmultisystemsareassignedinthePNOZmultiConfigur

ator.Inputsandoutputswiththesamenumberareassignedtoeachother,e.g.outputo5

ononePNOZmultisystemtoinputi5ontheotherPNOZmultisystem.

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