Beckhoff CX9020 Manual do Utilizador descarregar pdf (Página 21)

Mountingandwiring

PowercontactPE

Attention

Powerkontakt"PE"

The“PE”powercontactmustnotbeusedforotherpotentials."PE"und"0V"(24VCXSys

temsupply)havetobeonthesamepotential.(connectedinthecabinet)DerPowerkontakt

"PE"darfnichtfüranderePotentialeverwendetwerden."PE"und"0V"(24VSystemver

sorgung)müssenaufdemgleichenPotentialliegen.(imSchaltschrankverbunden)The

wiringthecabinethastofollowtheNormENEN602041:2006:SafetyofmachineryElec

tricalequipmentofmachines(PELV=ProtectiveExtraLowVoltage)EN602041:2006

chapter6.4.1:b):Onesideofthecircuitorapointoftheenergysourceofthecircuitmust

beconnectedtoprotectiveearthsystem

Attention

Interruptpowersupply/switchingoff

Ifthepowersupplyshouldbedisconnectedthe"0V"mustnotbedisconnected.Alwaysdis

connectthe“24V”wirefirst.Otherwisetherecanbeelectricalcurrentflowviatheshield.

Possiblyconnecteddeviceswithownpowersupply(e.g.panel)musthavethesameelec

tricalpotentialfor"PE"and"GND"astheCXunit.OtherwisetheCXunitand/orthecon

necteddevicecanbedamaged.

CX9020 21Version1.1

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Beckhoff CX9020 Manual do Utilizador Página 21