Pilz PNOZ c1 24VDC 3n/o 1n/c Manual do Utilizador descarregar pdf (Página 6)

PNOZc1

OperatingManualPNOZc1

22197EN02

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

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Thecorrectopeningandclosingofthesafetyfunctionrelaysistestedautomaticallyin

eachonoffcycle.

Blockdiagram/terminalconfiguration

InputInput

A1 A2 S21 S22

Power

Reset/

Start

S34

S11

S12

23 33

24 34

S33

*Insulationtothenonmarkedarea:Protectiveseparation(overvoltagecategoryIII),

Insulationofrelaycontactsagainsteachother:Basicinsulation(overvoltagecategoryIII),

protectiveseparation(overvoltagecategoryII)

Functiondescription

Whenthesupplyvoltageissupplied,the"POWER"LEDilluminates.Theunitisreadyfor

operationwhenthestartcircuitisclosed.

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Inputcircuitsclosed(e.g.theESTOPbuttonisnotpressed):Thesafetycontactsare

closedandtheauxiliarycontactisopen.

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Inputcircuitopen(e.g.ESTOPoperated):Thesafetycontactsareopenandtheauxili

arycontactisclosed.

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Dualchanneloperationwithdetectionofshortsacrosscontacts:redundantinputcircuit,

detects

– earthfaultsinthestartandinputcircuit,

– shortsbetweencontactsintheinputcircuit.

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Automaticstart:Unitisactiveoncetheinputcircuithasbeenclosed.

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ManualstartUnitisactiveoncetheinputcircuitisclosedandthenthestartcircuitis

closed.

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Increaseinthenumberofavailableinstantaneoussafetycontactsbyconnectingcon

tactexpansionmodulesorexternalcontactors.

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