
Commissioning
AsfromUPSsoftwareversionv1.0.0.48thefollowingwarningwillbedisplayedifanunsupporteddelay
timeisfoundwhenthealarmconfigurationdialogisopened:
TheunsupporteddelaytimeisplacedintotheComboBoxas(notsupported):
5.2.1.5.1 AdvancedSettingsdialog
ThefollowingsettingsareonlyavailableinsystemswithoutSoftPowerOffsupport(S5state)(e.g.NT4
systems).APCsystemwithSoftPowerOffsupportcanswitchoffthepowersupplyaftershutdown.Theend
ofasessionincludesashutdownorrestartofthePC,i.e.allsettingsrelatingtotheendofthesessionnot
onlyapplytotheshutdown,butareretainedwhenthePCisrestarted.
OnceamainsoperatedNT4systemhasbeenshutdown,itcannotdistinguishbetweendeliberateandnon
deliberatepowerfailure.ThismeanstheUPSsoftwareandthehardwarecannotdistinguishbetweena
genuinepowerfailureandtheoperatoroperatingthemainswitch(inordertoswitchoffthesystem
completely).TheUPSmerelydetectsapowerfailureandswitchestobatteryoperation.Iftheoperatorhas
switchedoffthemainswitch,thePCwillremainonbatterypower,eventuallydrainingthebattery.
Inordertopreventthis,theBeckhoffP24VxxxxUPSfeaturesanoptiontodeactivateUPSprotectionaftera
certaindelaytime.Duringthedelaytime,thePCisprotectedagainstpossiblepowerfailure.ThePCwill
remainonuntiltheexternalpowersupplyisswitchedoff.
CX210009x456 Version1.1
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