Digital Monitoring Products XR2500F Installation Guide
16
InstallatIon
Battery Information

11.1 Battery Only Restart

WhenpoweringuptheXR2500FpanelwithoutACpower,brieyshortacrossthebatterystartpadsto���pullin
thebatterycutoffrelay.Theleadsneedamomentaryshortonly.Oncetherelayhaspulledin,thebattery
voltageholdsitinthatcondition.IftheXR2500FpanelispoweredupwithanACtransformer,thebattery
cutoffrelayispulledinautomatically.ForbatterystartpadlocationrefertoFigure11.

11.2 Battery Replacement Period

DMPrecommendsreplacingthebatteryevery3to5yearsundernormaluse.

11.3 Discharge/Recharge

TheXR2500Fbatterychargingcircuitoatchargesat13.9VDCatamaximumcurrentof1.0Ampsusinga
56VAtransformer.Listedbelowarethevariousbatteryvoltagelevelconditions:
BatteryTrouble: Below 11.9VDC
BatteryCutoff: Below 10.2VDC
BatteryRestored: Above 12.6VDC

11.4 Battery Supervision

TheXR2500FteststhebatterywhenACpowerispresent.Thetestisdoneeverythreeminutesandlastsfor
veseconds.Duringthetest,thepanelplacesaloadonthebattery;ifthebatteryvoltagefallsbelow11.9
VDCalowbatteryisdetected.IfACpowerisnotpresent,alowbatteryisdetectedanytimethebattery
voltagefallsbelow11.9VDC.
IfalowbatteryisdetectedwithACpowerpresent,thetestrepeatseverytwominutesuntilthebattery
chargesabove12.6VDCindicatingthebatteryhasrestoredvoltage.Ifaweakbatteryisreplacedwitha
fullychargedbattery,therestoredbatteryisnotdetecteduntilthenexttwominutetestcompletes.

11.5 Battery Cutoff

Thepaneldisconnectsthebatteryanytimethebatteryvoltagedropsbelow10.2VDC.Thispreventsbattery
deepdischargedamage.

12.6 XR2500F Power Requirements

DuringACpowerfailure,theXR2500FpanelandallauxiliarydevicesconnectedtotheXR2500Fdrawtheir
powerfromthebattery.Alldevicesmustbetakenintoconsiderationwhencalculatingthebatterystandby
capacity.OnthefollowingpageisalistoftheXR2500Fpanelpowerrequirements.
•XR2500FCommandProcessor™Panel
•TheFireCommandCenter
•893ADualPhoneLineModule
•Two866NACmodules
•481ZoneExpansionInterfaceCard
ThenaddtheadditionalcurrentdrawofRemoteFireCommandCenters,SecurityCommandkeypads,zone
expansionmodules,smokedetectoroutput,andanyotherauxiliarydevicesusedinthesystemforthetotal
currentrequired.Thetotalisthenmultipliedbythenumberofstandbyhoursrequiredtocalculatethetotal
ampere-hours required.
SeetheXR2500FStandbyBatteryPowerCalculationschartonthefollowingpageandtheStandbyBattery
Selectioninformationonthenextpage.