三菱 MELSEC IQ-R 安全应用指南.pdf

MELSECiQ-R

SafetyApplicationGuide

SAFETYPRECAUTIONS

(Readtheseprecautionsbeforeusingthisproduct.)

BeforeusingMELSECiQ-Rseriesprogrammablecontrollers,pleasereadthemanualsfortheproductandtherelevant

manualsintroducedinthosemanualscarefully,andpayfullattentiontosafetytohandletheproductcorrectly.

Inthismanual,thesafetyprecautionsareclassifiedintotwolevels:WARNINGandCAUTION.

Indicatesthatincorrecthandlingmaycausehazardousconditions,resultingin

WARNING

deathorsevereinjury.

Indicatesthatincorrecthandlingmaycausehazardousconditions,resultingin

CAUTION

minorormoderateinjuryorpropertydamage.

Undersomecircumstances,failuretoobservetheprecautionsgivenunderCAUTIONmayleadtoserious

consequences.

Observetheprecautionsofbothlevelsbecausetheyareimportantforpersonalandsystemsafety.

Makesurethattheendusersreadthismanualandthenkeepthemanualinasafeplaceforfuturereference.

[DesignPrecautions]

WARNING

●Whenthesafetyprogrammablecontrollerdetectsafaultintheexternalpowersupplyoritself,itturns

offalloutputsinthesafetysystem.Configureanexternalcircuittoensurethatthepowersourceofa

hazardisshutoffbyturningofftheoutputs.Failuretodosomayresultinanaccident.

●Configureshortcurrentprotectioncircuitsforsafetyrelaysandprotectioncircuits,suchasafuseand

breaker,externaltothesafetyprogrammablecontroller.

●Whenaloadcurrentexceedingtheratedcurrentoranovercurrentcausedbyaloadshort-circuit

flows,thesafetyremoteI/Omoduledetectsanerrorandturnsoffalloutputs.Notethatifthe

overcurrentstatecontinuesforalongtime,itmaycausesmokeandfire.Topreventth