Siemens SCD 1297-C1 - Installation of the AC;DC-Power Supply Unit or 24 V-DC;DC-Converter; Cable Connections and Pin Assignments

LCD-MonitorSCD1297 
Page10/19
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DOC-No.:B30071D1.DOC
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ThermalProblems
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InorderthattheLCD-monitormaintainsanoptimumoperatingtemperaturewhileinuse,airmustbe
allowedtocirculatefreelyaroundtheSCD1297enclosure.Itisparticularlyimportantthattherearof
thesystemiskeptfree.
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Pleasebearinmindthatincreasedtemperaturescanleadtodefectsandtoasignificantreductionin
thelifetimeofthemonitor.
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EMCProblems
This LCD-monitor is a piece of equipment designed for building into an industrial system. The
operatoroftheentireplantisresponsibleformaintainingelectromagneticcompatibilityaccordingto
EMClaws.
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SafetyProblems
Allvoltageandsignalconnectionsmustadheretoappropriatelegalrequirements.
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Ergonomics
Thescreenshouldbeeasilyviewablefromallsidesandwithoutreflections.
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2.2.1Installation of the AC/DC-power supply unit or 24V-DC/DC-
Converter
EitheranAC/DCpowersupplyunitoraDC/DCconvertercanbeusedtosupplythecontrolpanelwith
24DC. If an AC/DC power supply unit is used, it is attached to the enclosure using the bracket
indicatedinFig.1onpage10.
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IftheDC/DCconverter,whichisdeliveredwiththeunit,istobeusedthenitshouldbeinsertedbelow
theAC/DCpowersupplyunitshowninFig.1,sothatthe24Vconnectorisaccessible.TheDC/DC
convertershouldthenbescrewedtotheenclosureusingtothetwoholesprovidedforthebracket.
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2.3 CableConnectionsandPinAssignments
TheLCD-monitorhasbeentestedandset-upinthefactory.Beforeuse,thepowersupplyandthe
VGAsignalsshouldbeconnectedtothesocketsprovided.Connectionstothemonitorshouldadhere
toEMCregulations.
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BefestigungslöcherfürDC/DC-Wandler
EinschiebendesDC/DC-Wandlers
unterdenDeckel
The cable from the AC/DC power
supply unit (12VDC) or from the
DC/
DCconvertrispluggeddirectly
intothesocket(power)ontheSCD
1297-
K.Itshouldbesecuredusing
apul-relief.