TransitionfromMELSECFX3G,FX3GE,FX3U,

FX3UCSeriestoMELSECiQ-FSeriesHandbook

SAFETYPRECAUTIONS

(Readtheseprecautionsbeforeuse.)

Beforeusingthisproduct,pleasereadthismanualandtherelevantmanualsintroducedinthismanualcarefullyandpayfull

attentiontosafetyinordertohandletheproductcorrectly.

Thismanualclassifiesthesafetyprecautionsintotwocategories:[WARNING]and[CAUTION].

Indicatesthatincorrecthandlingmaycausehazardousconditions,resultingin

WARNING

deathorsevereinjury.

Indicatesthatincorrecthandlingmaycausehazardousconditions,resultingin

CAUTION

minorormoderateinjuryorpropertydamage.

Dependingonthecircumstances,proceduresindicatedby[CAUTION]mayalsocausesevereinjury.

Itisimportanttofollowallprecautionsforpersonalsafety.

Storethismanualinasafeplacesothatitcanbereadwhenevernecessary.Alwaysforwardittotheenduser.

[DESIGNPRECAUTIONS]

WARNING

●MakesuretosetupthefollowingsafetycircuitsoutsidethePLCtoensuresafesystemoperation

evenduringexternalpowersupplyproblemsorPLCfailure.Otherwise,malfunctionsmaycause

seriousaccidents.

-Mostimportantly,setupthefollowing:anemergencystopcircuit,aprotectioncircuit,aninterlock

circuitforoppositemovements(suchasnormalvs.reverserotation),andaninterlockcircuit(to

preventdamagetotheequipmentattheupperandlowerpositioninglimits).

-NotethatwhentheCPUmoduledetectsanerror,suchasawatchdogtimererror,duringself-

diagnosis,alloutputsareturnedoff.Also,whenanerrorthatcannotbedetectedbytheCPU

moduleoccursinaninput/outputcontrolblock,outputcontrolmaybedisabled.Externalcircuits