Product Manual

4.0OPERATION
MORNINGSTARCORPORATION 33
willdetectthebatteryandprovideapproximately85%
ofavailablechargecurrentuntilthebatteryreachesthe
minimumoperatingvoltageofthecontroller.Whenthe
batteryhasrechargedtotheminimumoperatingvoltageof
theSunSaver,100%ofavailablechargecurrentwillowto
thebatteryandnormaloperationwillresume.
4.3 Load Control Information
Theprimarypurposeoftheloadcontrolfunctionisto
disconnectsystemloadswhenthebatteryhasdischarged
toalowstateofchargeandreconnectsystemloadswhen
thebatteryissufcientlyrecharged.Systemloadsmaybe
lights,pumps,motors,DCappliances,andotherelectronic
devices.Thetotalcurrentdrawofallloadsmustnotexceed
theSunSavermaximumloadrating.
NOTE:
Do not wire an AC inverter of any size to the load termi-
nals of the SunSaver. Damage to the load control circuit
may result. Connect inverters directly to the battery or
battery bank.
Load Control Settings
Loadcontrolisfullyautomatic.Theloadwillbe
disconnectedandreconnectedbasedupontheLowVoltage
Disconnect(LVD)andLowVoltageReconnect(LVR)voltage
thresholds.TheLVDandLVRthresholdsarelistedinthe
backofthemanual.
LVD Warning
AsthebatterydischargestheBattery StatusLEDswill
transitionfromgreentoyellowandthenfromyellowto
ashingred.Theashingredindicationisawarningthata
lowvoltagedisconnecteventwilloccursoon.Theamountof
timebetweenagreenSOCindicationandloaddisconnect
willdependonmanyfactorsincluding:
• rateofdischarge(amountofloaddraw)
• capacityofthebattery
• healthofthebattery
• LVDsetpoint
IfthebatterydischargestotheLVDsetpointtheloadwill
disconnectandasolidredBatteryStatusLEDindicationwill
bedisplayed.
General Load Control Notes
• OnlySS-6L/10L/20Lmodelsprovideloadcontrol.
• A15Vmaximumregulationvoltagelimit(30V@24V
nominal)existsforallbatterytypes.Thislimitensures
thatthebatteryandloadterminalvoltageswillnever
exceed15V/30V.ThisprotectscertainDCloadsthat
maybedamagedbyhighinputvoltage.
• Theload
connectionisNOT
aregulatedvoltage
output.Theloadterminalvoltageisapproximatelythe
sameasbatteryvoltageunlessthecontrollerisinLVD
condition(loadturnedoff).
• DonotwiremultipleSunSaverloadoutputstogetherin
paralleltopowerDCloadswithacurrentdrawgreater
thanthelowestratedcontroller’smaximumloadrating.
Equalcurrentsharingcannotbeguaranteedandan
over-loadconditionwilllikelyoccurononeormore
controllers.
• Exercisecautionwhenconnectingloadswithspecic
polaritytoaliveloadcircuit.Areversepolaritycon-
nectionmaydamagetheload.Alwaysre-checkload
connectionsbeforeapplyingpower.
• TheSunSaverwillgostraighttoLVDonstart-upifthe
batteryvoltageisatorbelow11.7V/23.4V.
4.0