PROSAFE TRAPPED KEY SYSTEMS.pdfVIP专享VIP免费原创优质

PROSAFETRAPPEDKEYSYSTEMSnhp.com.aunhp-nz.comEasySelectionGuideSAFETYPRODUCTS2step1stepIntroductionSTEP2:Selectakeyexchangeunit/middledeviceSTEP1:Selecttheisolatingunits/startdevicesTrappedkeyinterlockingsystemsarebaseduponthepremisethatonekeycannotbeintwoplacesatthesametime.Thesesystemscanbeconfiguredtoensurethatapredeterminedsequenceofeventstakesplaceorthathazardshavebeenreducedbeforeoperatorscanbecomeexposedtothem.Theyaremechanicalsystems,whichmakesthemsuitableforapplicationswherethelocationoftheplant,environmentorexplosiveatmospheresmaketheuseofelectricalinterlockingsystemsunsuitableorexpensivetoinstall.Uniquekeycodingallowsforahighdegreeofsecurityandtamper-resistance.Orderingcanbedoneintheseeasysteps:Thisisrequiredifmorethanoneisolatingunitoraccessdeviceisbeingused.Thekeyfromtheisolatingunitisplacedintothevacantbarreloftheexchangeunit.Thiskeyisreferredtoastheprimarykey.Thisallowsthetrappedkeys,knownassecondarykeys,toberemovedfromtheunit.Thesecondarykeyscanthenbeusedinaccessdevices.Thesearethedevicesthatisolatepowertothehazard.Oncethepowerisisolated,thetrappedkeycanthenberemovedandusedinakeyexchangeunitoranaccessdevice.Isolatingunitsarenotsuppliedwithkeysincluded.23step4step5stepSTEP3:Selecttheaccessdevices/enddevicesSTEP4:AddanytrappedkeysthatarerequiredSTEP5:AddtherequiredkeycodesforeachitemThesearethedevicesthatallowaccesstothehazard.Theycanbesinglekeyordualkeyunits.Singlekeyunitscontainonlyaprimarykey,whichisnotincludedwiththeunit.Dualkeyunitscontainaprimarykey(notincluded)andasecondarykey(included).Whentheprimarykeyisinsertedintoadualkeyaccessdevice,thesecondarykeywhichisreleasedfunctionsasapersonnelkeywhichanoperatortakeswiththemintothehazardousarea.Theprimarykeyremainstrappeduntilthepersonnelkeyisreplacedbytheoperator.Thispreventstheaccessdevicefrombeinglockedandpowerbeingrestoredtothehazardwhileanoperatorisinthearea.Checkthatthesekeysarenotalreadyincludedwithanotherproductinthesystem.(e.g.akeyexchangeunit).Refertothepreferredkeycodelistbelow•Foroneaccessdeviceandoneisolatingunit:Thecodefortheaccessdevicewillbethesameasthecodefortheisolatingunit•Formultipleaccessdevices:–Theprimarycodes(keysin)ofthekeyexchangewillbethesameasthecodesfortheisolatingunit–Thesecondarycodes(keysout)ofthekeyexchangewillhavedifferentcodestothekeysin–ThecodesfortheaccessdeviceswillmatchupwiththesecondarycodesofthekeyexchangePreferredkeycodesThesecodesarereadilyavailableandwilltypicallyresultinthequickestdelivery.Forotheravailablecodes,pleasecontactNHP.AAABACADAEAFAGBABBBCBDBEBFBGCACBCCCDCECFCGDADBDCDDDEDFDGEAEBECEDEEEFEGFAFBFCFDFEFFFGGAGBGCGDGEGFGG3examplesExamplesystem:oneaccessdeviceExamplesystem:twoaccessdevicesThesolenoidreleaseunitisenergiseduponreceivingasignalfromaPLC.Thekeyfromthesolenoidgoesintoa3-waykeyexchangeunit,releasingthetwotrappedkeys.Thesecanthenbeusedtoopenaccessgates.IsolatingunitRotaryswitchAAIsolatingunitSolenoidreleaseunitAAAccessdeviceAccessleverlockAAKeyexchangeunit3way,AAkeyin,2xBAkeysoutAccessdevicesAccesschainlocksDescriptionBaseCat.No.RequiredkeycodesCompleteCat.No.QtyPanelmountedrotaryswitch,2NO/2NC,20A440T-MRPSE11AA440T-MRPSE11AA1Trappedkey440T-AKEYE10AA440T-AKEYE10AA1Singlekeyaccesslock,leveractuator440T-MSALE10AA440T-MSALE10AA1DescriptionBaseCat.No.RequiredKeyCodesCompleteCat.No.QtySolenoidreleaseunit24VDC440T-MSRUE11AA440T-MSRUE11AA1Trappedkey440...