Low oltageDisconnection:(LVD)ofthe atteriesisprovidedtopreventdeep
dischargeofthe attery.Automaticreconnectionoccurswhen atteryvoltage
recovers.BatteryCurrentDrainislessthan2mA.
TrickleCharge:TrickleChargetothe atteryisalwayspresent.Whenthe attery
voltageis elowtheLVD(Lowvoltagedisconnect)reconnectvoltage(<10Vand
themainspowerorauxiliarypowerisavaila le,the atterywill echargingat
0.8A.Whenthe atteryvoltageissufficient(>10.5Vforfirstpowerup,11.5Vand
11.7Vforsu sequentreconnectionwithandwithoutmainsrespectively)theLVD
willconnectthe atteryandallowfloatchargingat10A/15A(ST20III/ST35III).
TheTrickleChargefeatureisprovidedtoallow“very”flat atteriesto echarged
atarate,whichwillextendtheirlife.
RemoteBatteryIsolateSwitch:TheSTIIIseriespowersuppliesallowfor
connectiontoaremotelypositionedswitchthatprovidesamanualdisconnection
ofthe atteryfromtheloadsandthemaincharger.Whentheswitchcontactsare
closed,the atterywill eisolatedfromtheloads.
NOTE:Whenthebatteryisisolatedfromtheloadsusingthebatteryisolate
switchitwillNOTchargeatthe10/15Arateevenifthemainsisconnected
tothepowersupply.InthisconditionitwillONLYchargeattheTrickle
chargerate.
FrontPanelIndicators:TheSTIIIseriespowersupplieshave3indicators
visi leonthefrontfascia.
Mains(GREEN)–isilluminatedwhenmainspowerispresent.
Battery(ORANGE)–isilluminatedwhenthe atteryisconnectedtotheloads.
Fault(RED)–isilluminatedwhenthereisafaultwiththepowersupply.
BatteryfuseBlown1
Batteryconnectedreversepolarity2
Shutdowncondition(UVandOT)3
MainPCBmicrocontrollermalfunction4
Notes
1. Flashing1sON,1sOFF.
2. SolidON.
3. Flashing1sON,1sOFF,withnobatteryconnectedthe owersu ly
maybeinhiccu modewhichwillcausetheindicationtoflashwith
randomdutycycleandfrequency.
4. FaultLed=SolidOn,Allotherleds=OFF,irres ectiveofactualmainsor
LVDstatus.
AuxiliaryPowerInput:Thepowersupplyterminal“AuxIn+VE”providesan
alternativeoptionforpoweringoftheloadandfloatchargingofthe atterieswhen
mainsvoltagesarenotpresent.Thisinputisto epowered yasuita le+12V
system.(i.e.CAR).Thevoltageoftheauxiliarypowersourceshouldnotexceed
7