Beckhoff CX51x0 Uživatelský manuál stáhnout pdf (Strana 33)

Mountingandwiring

Theterminalsareimplementedinspringforcetechnology.Connectthecablesasfollows:

1. Openaspringloadedterminalbyslightlypushingwithascrewdriverorarodintothesquareopening

abovetheterminal.

2. Thewirecannowbeinsertedintotheroundterminalopeningwithoutanyforce.

3. Theterminalclosesautomaticallywhenthepressureisreleased,holdingthewiresafelyand

permanently.

Wirecrosssection 0,5...2.5mm

AWG20…AWG14

Striplength 8...9mm 8.38mm

LED

Ifthepowersupplyunitisconnectedcorrectlyandthepowersupplyisswitchedon,thetwoupperLEDsin

theterminalprismaregreen.TheleftLED(Us)indicatestheCPUsupply.TherightLED(Up)indicatesthe

terminalsupply.TheotherLEDsindicatetheTerminalBusstatus.AdetaileddescriptionoftheLEDscanbe

foundinsection“LEDtroubleshooting”.

ULrequirements

WARNING

LossofULListing

InordertocomplywithULrequirements,theCXcontrollersmustnotbeconnectedtoun

limitedvoltagesources!

InordertocomplywithULrequirements,theCXcontrollersmayonlybeconnectedtosup

plyvoltages(24VDC)thatoriginatefrom:

a)anisolatedsourcethatisprotectedwithafuse(compliantwithUL248)of4Amax.,or

b)avoltagesourcethatiscompliantwithNECclass2.

AnNECclass2voltagesourcemustnotbeconnectedinseriesorparallelwithanother

NECclass2voltagesource!TheseULrequirementsapplytoallsupplyvoltagesforCX

controllers!

PEpowercontacts

Attention

Powercontact“PE”

The“PE”powercontactmustnotbeusedforotherpotentials.“PE"and“0V"(24Vsystem

supply)musthavethesamepotential(connectedinthecontrolcabinet).Thecablinginthe

controlcabinetmustcomplywithEN602041:2006PELVProtectiveExtraLowVoltage.

EN602041:2006section6.4.1:b):Onesideofthecircuitoronepointoftheenergysource

forthiscircuitmustbeconnectedtheprotectiveearthconductorsystem.

Attention

Interruptionofthepowersupply/switchingoff

Thedevicemaynotbeswitchedoffbydisconnectingtheground.The24Vlinemustal

waysbedisconnectedfirst,sinceotherwisecurrentmaycontinuetoflowviatheshielding,

dependingonthedevice.Anydeviceswithindependentpowersupplythatmaybecon

nected(e.g.aPanel)musthavethesamepotentialastheCXsystemfor“PE"and

“GND"(nopotentialdifference).Apotentialdifferencemayresultindamagetothecon

trollerandtheperiphery.

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