Setec ST-III Series - Low Voltage Disconnection; Trickle Charge; Remote Battery Isolate Switch; Front Panel Indicators

LowVoltageDisconnection:(LVD)ofthebatteriesisprovidedtopreventdeep
dischargeofthebattery.Automaticreconnectionoccurswhenbatteryvoltage
recovers.BatteryCurrentDrainislessthan2mA.
TrickleCharge:TrickleChargetothebatteryisalwayspresent.Whenthebattery
voltageisbelowtheLVD(Lowvoltagedisconnect)reconnectvoltage(<10Vand
themainspowerorauxiliarypowerisavailable,thebatterywillbechargingat
0.8A.Whenthebatteryvoltageissufficient(>10.5Vforfirstpowerup,11.5Vand
11.7Vforsubsequentreconnectionwithandwithoutmainsrespectively)theLVD
willconnectthebatteryandallowfloatchargingat10A/15A(ST20III/ST35III).
TheTrickleChargefeatureisprovidedtoallow“very”flatbatteriestobecharged
atarate,whichwillextendtheirlife.
RemoteBatteryIsolateSwitch:TheSTIIIseriespowersuppliesallowfor
connectiontoaremotelypositionedswitchthatprovidesamanualdisconnection
ofthebatteryfromtheloadsandthemaincharger.Whentheswitchcontactsare
closed,thebatterywillbeisolatedfromtheloads.
NOTE:Whenthebatteryisisolatedfromtheloadsusingthebatteryisolate
switchitwillNOTchargeatthe10/15Arateevenifthemainsisconnected
tothepowersupply.InthisconditionitwillONLYchargeattheTrickle
chargerate.
FrontPanelIndicators:TheSTIIIseriespowersupplieshave3indicators
visibleonthefrontfascia.
Mains(GREEN)–isilluminatedwhenmainspowerispresent.
Battery(ORANGE)–isilluminatedwhenthebatteryisconnectedtotheloads.
Fault(RED)–isilluminatedwhenthereisafaultwiththepowersupply.
BatteryfuseBlown1
 Batteryconnectedreversepolarity2
 Shutdowncondition(UVandOT)3
 MainPCBmicrocontrollermalfunction4
Notes
1. Flashing1sON,1sOFF.
2. SolidON.
3. Flashing1sON,1sOFF,withnobatteryconnectedthepowersupply
maybeinhiccupmodewhichwillcausetheindicationtoflashwith
randomdutycycleandfrequency.
4. FaultLed=SolidOn,Allotherleds=OFF,irrespectiveofactualmainsor
LVDstatus.
AuxiliaryPowerInput:Thepowersupplyterminal“AuxIn+VE”providesan
alternativeoptionforpoweringoftheloadandfloatchargingofthebatterieswhen
mainsvoltagesarenotpresent.Thisinputistobepoweredbyasuitable+12V
system.(i.e.CAR).Thevoltageoftheauxiliarypowersourceshouldnotexceed
7