POWER ON BOARD VEC550POB Supplement

VEC550POB
POWERINVERTER
1500WATTS
OWNER’SMANUAL
&WARRANTY INFORMATION
SAVETHESEINSTRUCTIONS
THISMANUAL CONTAINSIMPORTANT INFORMATIONREGARDINGSAFETY,OPERATION,
MAINTENANCEANDSTORAGEOFTHISPRODUCT.BEFOREUSE,READANDUNDERSTAND
ALL CAUTIONS,WARNINGS,INSTRUCTIONSANDPRODUCT LABELS,PLUSYOUR
VEHICLE’SBATTERY MANUFACTURERGUIDELINES.FAILURETODOSOCOULDRESULT IN
POSSIBLEINJURY ORPROPERTY DAMAGE.
4140SW28thWay,FT.LAUDERDALE,FL 33312
Tel954.584.4448•Fax954.584.5556•TollFree866.584.5504

2
IMPORTANT SAFETY INSTRUCTIONS
Toensurereliableservice,yourpowerinvertermustbeinstalledandusedproperly.
Pleasereadallinstructionsthoroughlypriortouse.Payparticularattentiontothe
WARNINGandCAUTIONstatementsinthismanual.TheWARNINGstatements
identifyconditionsorpracticesthatmayresultinpersonalinjury.
TheCAUTIONstatementsadviseagainstcertainconditionsandpracticesthatmay
resultindamagetoyourinverterorequipmentconnectedtoit.Save,readand
understandallinstructionsbeforeusingthispowerinverter.
WARNINGS-toreducetheriskoffire,electricshock,explosionorinjury:
1. DONOT locateinvertersinanarea,roomorcompartmentwhere
explosiveorflammablefumesmightbepresent.
2. DonotconnecttoACdistributionwiring-fordirectplug-inuseby
ACappliances.
3. Removeapplianceplugfromoutletorturnoffinverterbeforeworkingonthe
appliance
4. Inverterproduces120volts,60HzAC
5. Outletsarelive.Riskofelectricshock.DisconnectDCpowerbeforeservicing.
6. Notapprovedformarineapplications.
CAUTIONS:
1. Nouser-serviceablecomponentsinside.openingunitwillvoidwarranty.
2. Donotusewithpositivegroundelectricalsystems(themajorityofmodern
automobiles,RVs,andtrucksarenegativeground)
Reversepolarityconnectionwillresultinablownfusemaycause
permanentdamagetotheinverterandwillvoidthewarranty
3. Thisinverterwillnotoperatehighwattageappliances(morethan
1500watts)orequipmentthatproduceheat,suchashairdryers,
microwaveovensandtoasters.
4. Donotoperatethisinverterifitiswet
5. Donotplaceinenginecompartment-keepwellventilated
6. Notapprovedforusewithmedicalequipment
7. Bondingbetweenenclosureconnectionsisnotautomaticandmustbe
providedaspartoftheinstallation.
Toavoidpossibledangerousconditions,theinvertersmustbelocatedwhere:
1.Theunitiskeptdry.
2. Airtemperatureisbetween30degreeF(-1degreeC)non-condensing,
and105degreesF(40degreesC).
3.Atleastthreeinchesofclearancefromotherobjectsismaintainedfor
coolingairflow.
4.Theunitisnotexposedtodirectheatorsunlightortoexplosiveor
flammablefumes.

3
INTRODUCTION
PoweronBoardPowerInvertersaregearedformaintainingtoday'smodernlifewhile
travelinginVans,RVs,automobiles,trucks,orvehiclethathas12voltbatterypower
supplyandameanstorechargethosebatteries.ThisMaxx1500Inverterissupplied
with:
1.On/Offswitch
2.TripleOutlet
3. DualLEDindicatorsthatindicateoperation(POWER),shutdown(FAULT).
4.Coolingfan
5.A groundingterminalforelectricalsafety.
6.DCcableconnectors
7.Internalprotectivecircuitsthatinclude:
•Automaticoverloadandover-temperatureshutdown(activatedifAC
outputexceedsmaximumpower)
•AutomaticACshort-circuitshutdown.REDFAULT LEDlit.
• Automaticlowvoltageaudiblealarm.
•Automaticlow-voltageshutdown.
•Automatichigh-inputvoltageshutdown.
Maxx1500Series-isastate-of-theart,highlyefficientDCtoACpowerinverterthat
changes12voltsDCfromabatteryto120voltsAC,60Hz.WithproperDCpower,
itcancontinuouslydeliverupto1500wattsAC.
AllPoweronBoardinvertershavetwomethodsofpreventingbatteriesfrombeing
completely discharged.Whenyourbatteriesbegintodropinvoltage,theinverter
willsoundanalarm.Youcaneitherturnofftheinverterorleaveitunattended.
Furtherdischargewillautomaticallyturnofftheinverter.Ifyourbatterydoesgoto
completedischarge,it'sbecausesomeotherappliancesaredrawingpowerfrom
thebattery.
ThisPowerInverterisconfiguredwiththelatestsoftstarttechnology(SST)to
improveinverteroperation.Beforeintroductionofsoft-start,highstartupcurrents
fromlargeinductiveloadscouldshutdowntheinverter.Threemajorfeaturesare
incorporatedinSST.First,gradualoutputvoltageramp-upduringinverterstartup.
Thiseliminatesfailedcoldstartsunderload.
Second,outputthatmomentarilydipsinvoltageandquicklyrecovers.Thiseliminates
mostshutdownsfrommomentaryoverloads.
Thispowerinverteralsoincorporatesanewcoolingtechnologythatdirectlybenefits
ourcustomers.Thenewdesignmoreefficientlycoolsthepowertransistorsand
combinedwithsoftstartdramaticallyincreasesreliabilityandthelifeoftheproduct.

TOUROFMAXX1500-SERIESINVERTER
ACpowerissuppliedviathreeNorthAmerican,household-typereceptaclesas
showninFIGURE1.Thisallowstheconnectionandoperationofmost120VAC-
poweredelectricalandelectronicappliancesthatuseastandardplug.Therestof
thefrontpanelitemsare:OneFAULT LED.Whenthislights,theinverterisshut
down.OnePOWERLEDthatlightswhentheinverterisoperating.OneON/OFF
switchthatshutsoffallinverterfunctions.TheON/OFFswitchcanalsobeusedto
resettheinverteraftertheinvertershutsdownduetoafaultconditionsuchas
overload,overtemperature,shortcircuitorhighvoltage.
FIGURE1-FRONT PANEL
FIGURES2A -SIDEVIEW FIGURES2B-CABLES
4
AC
OUTLET
FANS
GROUNDING
TERMINAL
FAULT LED
(Red)
POWERLED
(Green)
ON/OFF
SWITCH
POSITIVE
(+)TERMINAL
NEGATIVE(-)
TERMINAL
DCINVERTER
TERMINAL
CONNECTIONS
RING
TERMINALS
TODC
BATTERY
POWER
METER
MOUNTING
BRACKETS
MOUNTING
BRACKETS

THEORY OFOPERATION
Theinverterchanges12VDCinto120VAC(120VACRMS),electricalpower.This
isaccomplishedintwostages.Thefirststageraisesthe12VDCinputto145VDC
throughmodernhigh-frequencyconversiontechniques.Theoutputstagechanges
the145-VDCto120VAC.Theinverter'soutputstageusesmultiplebanksofmetal-
oxidesemiconductorfield-effecttransistors(MOSFETs)toalternatelyapply
oppositepolaritytotheACoutlet'sHOT andNEUTRAL terminals.TheACoutput
approximatesasinewaveinshape.ThisiscalledModifiedSineWave(MSW)and
ithasthesameenergycharacteristicsasthesinewaveofcommercialelectrical
power.
FIGURE3-SINEWAVEANDMSWCOMPARISON
NOTE: A TRUERMSvoltmetermustbeusedformeasuringMSW.Iftheoutputof
theinverterismeasuredusingstandarddigitaloranalogvoltmeters,these
instrumentsmaynotcorrectlyreadthevoltage.Theytypicallywillreadfrom10to
20voltslow.
ACAPPLIANCECAUTIONS:
DONOT plugsmallappliancesintotheinverterreceptaclestodirectlyrechargetheir
nickel-cadmiumbatteries.Alwaysusetherechargerprovidedwiththatappliance.
DoNOT pluginbatterychargersforcordlesspowertoolsifthechargercarriesa
warningthatdangerousvoltagesarepresentatthebatteryterminals.
Notallfluorescentlampsoperateproperlywiththistypeofinverter.Ifthebulb
appearstobetoobright,orfailstolight,donotusethelampwiththisinverter.
Fanswithsynchronousmotorsmayslightlyincreaseinspeed(RPM)when
poweredbytheinverter.Thisisnotharmfultothefanortotheinverter.
Certainchargersforsmallnickel-cadmiumbatteriescanbedamagedifpluggedinto
theinverters.Inparticular,twotypesofappliancesaresusceptibletodamage:
•Small,battery-operatedappliancessuchasflashlights,cordlessrazors
andtoothbrushesthatcanbepluggeddirectlyintoanACreceptacle
torecharge
•Certainbatterychargersforbatterypacksthatareusedinsomecordless
hand-tools.Chargersforthesetoolshaveawarninglabelstatingthat
dangerousvoltagesarepresentatthebatteryterminals
5
110/120V AC
110/120V AC

6
DONotuseinverterswiththeabovetypesofequipment.Themajorityofportable
appliancesdonothavethisproblem.Mostportableappliancesuseseparate
transformersorchargersthatplugintoACreceptaclestosupplyalow-voltageDC
orACoutputtotheappliance.Iftheappliancelabelstatesthatthechargeror
adapterproducesalow-voltageDCorACoutput(30voltsorless),thereshouldbe
noproblempoweringthatchargeroradapter.
Checkoperatingtemperatureofsmallmotors.Ifthemotoroperatesatmuchhigher
thannormaltemperaturetheremaybeanincompatibilityproblem.Discontinueuse
andcomparetemperatureswhileoperatingtheappliancefromcommercialACpower.
INVERTERAPPLICATIONS
MAXX1500SeriesInvertersareidealforpowering:
• 3/8”ReversibleDrill ............................420watts
• HouseholdFoodProcessor ......................430watts
• ComputerAndMonitor ..........................450watts
• ElectricGardenTools ...........................475watts
• PortableVacuum ..............................525watts
• CoffeeMaker .................................600watts
• 1/2”ReversibleDrill ............................620watts
• ReciprocatingSaw .............................720watts
• 1/3“SubmersiblePump .........................920watts
• MiniMicrowave...............................1000watts
• ChestFreezer................................1200watts
• Full-SizedMicrowaveOven .....................1400watts
NOTE: APPLIANCESPECIFICATIONSMAY VARY FROMBRANDTOBRAND.THIS
TABLEISOFFEREDONLY ASA GUIDETOAPPROXIMATEPOWERRATINGS.
CHECKAPPLIANCEMANUALSORPRODUCT LABELINGFORACTUAL RATINGS.
TOESTIMATETHEPOWERCONSUMPTIONOFAPPLIANCEMULTIPLY CURRENT
RATINGOFAPPLIANCEBY 120VAC.TOUSETHEMAXIMUMOUTPUT OF
1500WATTS,MAXX 1500MODELSMUST BECONNECTEDTOADCPOWER
SUPPLY CAPABLEOFCONTINUOUSLY PROVIDING150ORMOREAMPS.
OPERATIONWITHACAPPLIANCES
TurnOntheinverterusingtheON/OffSwitchandobservethattheindicatorsarein
thefollowingcondition:
POWERLEDislit.Plugintheapplianceandturniton,itshouldoperatenormally.
NOTES: Ensurethatthetotalcontinuouspowerconsumptionofalltoolsand/or
appliancesconnectedtotheinverter(andinuse)doesnotexceed1500watts.
Ifamotorizedapplianceimmediatelyshutsdown,andtheFAULT LEDislit,try
rocking theOn/Offswitchbackandforthafewtimeswhiletheapplianceisplugged
inandturnedon.SeeTroubleshootingsectionifthisdoesnotwork.

DCCONNECTIONPRECAUTIONS
IMPORTANT CABLEINFORMATION
UsecableinformationinAppendixA fordetermininggaugeofcable.
UseDCInverterterminalconnectionsoncableends.
Theusermustmaintainsecure,tight,electricalconnections.
UsecorrectgaugeDCcablingtosupplyupto150amps,ormaximumload.
Keepcablingshorttoavoidvoltagedropandreducedoperatingtime.
Invertersaresuppliedwithagroundingterminal.ConnectaninsulatedAWG12wire
tothisterminalandconnecttheotherendtoasolidelectricalground.Thisisan
importantsafetywirethatensurespropergrounding.DONOT CONNECT THIS
WIREDIRECTLY TOTHENEGATIVEDCINPUT TERMINAL OFTHEINVERTER,
orBattery.
Atfull1500wattload,theDCinputrequirementsareupto150amperesat12volts
DC.Formostcontinuous-dutyapplications,multiplebatteryconfigurationandthe
useofdeep-cyclebatteriesisarequirement.Withvehiclesusingmultiplebatteries,
invertersshouldbeoperatedfromoneofthevehicles12voltbatteries,
sothere'salwaysonebatterywithadequatechargetostartanengine.
LOCATIONCAUTIONS:
Toavoidpossibledangerousconditions,theinvertersmustbelocatedwhere:
1. Theunitiskeptdry.
2. Airtemperatureisbetween30degreeF(-1degreeC)non-condensing,
and105degreesF(40degreesC).
3. Atleastthreeinchesofclearancefromotherobjectsismaintainedfor
coolingairflow.
4. Theunitisnotexposedtodirectheatorsunlightortoexplosiveor
flammablefumes.
5. TheunitisasclosetotheDCpowersourceaspossible.
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DETERMININGBATTERY CAPACITY FOREXTENDEDRUNTIMES.
Invertersmustbesuppliedwithaconstantsourceofhighcurrent12voltDCfroma
batteryorbankofbatteries.Todeterminetheminimumbatterysizethatyouwill
needtooperateappliancesfromtheinverterwithoutageneratororalternator
chargingthebattery,followthesesteps:
1. Determinethewattageofeachapplianceand/ortoolyouwillneedto
simultaneouslyoperatefromtheinverter.Readthelabelsonthe
equipmenttobeoperated.Usually,powerconsumptionisshowninwatts.
Ifitisshowninamps,multiplyby120VACtodeterminewattage.
2. Estimatethenumberofhourstheequipmentwillbeinusebetweenbattery
recharges.
3. Todeterminethetotalwatt-hoursofenergyuse,multiplythetotalrunning
time,bytheaveragepowerconsumption.To getanestimateofthecurrent
(inamps)thatthebatterymustbecapableofdelivering,dividethewatt
hoursbyten(10).Example:250wattsforonehouris250watt-hours.Then
250dividedby10is25amphours.Generally,batterycapacityshouldbe
ratedatleasttwicethecalculatedamphours.
MOUNTINGTHEINVERTER
Theinvertershouldbemountedandclosetothebatterysupplyassafefromengine
fumes,explosivegas,andhightemperatures.Theinvertermusthavenonrestrictive
airflowtomaintainadequatecooling.Useappropriatescrewsorothermeansto
fastentheinvertertoashelf,floor,wall,etc.Makesurethatnodamageresultstofuel
orelectricallinesthatmaybebehindanysheetmetalsurfaces.Aftermounting
theinverter,carefullyfollowthecablepathtothebatterybyusingthelengthofstring.
Usingthemeasurementfromthestring,add6”totheendofeachcable.Inverters
shouldbemountedhorizontlynotvertically.
CONNECTINGTODCSUPPLY
CAUTION:
EnsurethatDCconnectionpolarityiscorrect.Reversedpolaritywillblowafuseand
maycausepermanentdamagetotheinverter.Themanufacturer'swarrantydoes
NOT coverdamageduetoreversedpolarity.ReviewFigure2,ifnecessary,
toidentifythelocationoftheDCterminalsandtheirpolarities.
WARNINGS:
DIRECT CONNECTIONOFTHEPOSCABLETOTHEPOSBATTERY
TERMINAL MUST BEPROTECTEDAGAINST SHORT CIRCUITS.FORTHIS
INVERTERUSEAN300ANL FUSEANDFUSEHOLDER.

WARNINGSCONTINUED:
DANGEROFEXPLOSION.BATTERY CHARGING,DISCHARGINGAND
ENGINEOPERATIONPRODUCEEXPLOSIVEGASSES.MAKESURETHE
AREA AROUNDTHEBATTERY ISWELL VENTILATEDANDNOBATTERY
CHARGINGISOCCURRING.WEARPROTECTIVEEYEWEARWHILE
CONNECTINGTONON-SEALEDLEADACIDBATTERY.
Placetheinverterasclosetothebatterysupplyapracticalmakingsuretheinverter
issecure,dry,andcool.
Makesurethelengthandgaugeofcablearecorrectfortheinstallation.(See
AppendixA)Usecablesthathave6”ofextralengthforstrippinginsulationand
fastening(crimpingorsoldering)ringterminals.
CONNECTIONPROCEDURE:
1. Makesuretheinverter'sOn/OffSwitchisturnedOFF.
2. IdentifythePositiveandnegativeterminalsonthe12voltDCbatteryand
identifythepositive(+)andnegative(-)terminalsontheinverter.
3. Loosentheterminalscrewsfromtheterminalconnections.
4. AttachtheredcableterminalconnecctiontothePositive(POSor“+”)
terminalandtheblackcableterminalconnectionisattachedtothe
Negative(NEGor“-”)terminalofbattery.
Securethecablesbytightingtheflatheadscrewsontheterminals.
5. Removetheretainingnutandwasherfromthegroundingterminal.
6. CarefullyattachasinglestrandedinsulatedAWG12groundwiretothe
groundingstudonthebackoftheinverter.
7. Replacethewasherandnutonthegroundingstud.
8. ConnecttheotherendofthewiretoVehicleChasis(non-movingengine
part)orEarthGround.SeeFigure4forconnectiondiagram.
9. Attachthefuseholdertotheredcableendclosetothebattery.
10. PrepareaveryshortAWG4cablewithringterminalstoconnectthe
otherendofthefuseholdertothebatteryPOSterminalofthebattery.
FIGURE4-THEINVERTERANDFUSEANDSAFETY WIRECONNECTIONS
–
+
GND
–+
INVERTER
12VOLT
BATTERY
ANL FUSE
HOLDER
AND300AMP
FUSE
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NOTE: DONOT CONNECT THIS
SAFETY WIRETOTHE
NEGATIVEDCINPUT
TERMINAL OFTHEINVERTER
CHASIS

11. MaketheconnectionstotheFUSEHOLDERandbatteryterminal
12. Donotinstallfuseyet.
13. ConnecttheNegativecableringterminaltothebatteryNEGterminal.
14. Insertthefuseintothefuseholder.Theremaybemomentary
sparking.
15. Checkallconnectionsandtightenanylooseconnections.
16. TurnONtheinverterandapplyatestloadtotheACoutlets.
AnyquestionspleasecontactPoweronBoardTechnicalSupportat:
(954)584-4446EXT.119forprofessionaldirection.
SERVICEANDREPLACEMENT PARTS
FUSES
Itisrecommendedbutnotrequiredsincethereisinternalfuseprotection
thattheuseruseanexternalinlineANL 300fuseandfuseholder(not
supplied).Thefuseholder,andtheANL-300fuse(notsupplied)canbe
purchasedatmostelectricalsupplycompanies.Itisalsorecommendedthat
anAutomotiveElectricianbeusedtoinstallthiscable.
AnyquestionspleasecontactPoweronBoardTechnicalSupportat:
PH:954-584-4446•TOLL FREE:866-584-5504•FAX:954-584-5556.
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