Pilz PNOZ s50 C Manual do Utilizador descarregar pdf (Página 10)

Safety

OperatingManualPNOZs50

1002194EN02

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

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Mechanicalholdingbrakes.

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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:

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Anycomponent,technicalorelectricalmodificationtotheproduct

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Useoftheproductoutsidetheareasdescribedinthismanual

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Useoftheproductoutsidethetechnicaldetails(seechapterentitled“TechnicalDe

tails”)

Pleasenotethefollowingsafetyguidelines:

Hazardanalysis

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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

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ThePNOZs50mayonlybeoperatedinconjunctionwithahigherlevelsafetycontrol

system.

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Theoutputsonthesafetycontrolsystemusedtoactivatefastshutdownmustbetested

todetectshortsacrosscontactsandearthfaults.

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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

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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

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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

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Thepowercircuit'sslowshutdownisnotsafetyrelated.Itmayonlybeusedwhenper

mittedbythehazardanalysis.

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