Pocasa H1KS User manual

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Thankyou forpurchasing ourUPS,itissafeand liable,needsfewmaintenance.
Thismanualincludesinstructionsofsafetyinstallationand operation,theyhelpyourUPStohavethe
longest servicelife.Thismanual alsoaccountsthe UPSwork principleand relativefunctions.
Pleaseobeythe instructionsand notesstated inthismanual.Keep thismanualinasafeplace,consult
itbeforeoperation.
Safetyrules
Evenif notconnected tomainpower, high voltage maystillpresentsat UPS outlets.
If the externalbattery cordorpowercordneedstobe replaced, pleasecontact ourservicestation or
franchiserforreplacing toavoidfiredisastercaused byinsufficientcapacityof suchitems.Don't disposeof
battery orbatteriesgroup inafire, otherwise, itcan causeexplosion and harmtopeople.Don't open the
battery ordothe battery damage,forthe liquidspilled frombatteryisstronglypoisonousanddo harmfulto
body.
Pleaseavoidshort-circuit between battery anode and cathode; otherwise, thiswillcauseelectricshock or
fire.
Don't dismantlethe UPS cover,thereisdangerofelectricshock.
Don’t touchbatteries. Batteriesarenotisolated withthe input circuit,thereishigh voltage between the
battery terminalsand ground.
Don’t connect withthe electricequipment suchasblower, heater, drilling machine etc.Theymaydamage
the UPS.
Note: POCASAreservesthe righttomakechangestoproduct described inthismanual at anytimeand
without noticeforreasonsofimprovement.
Notice:
Therepresentshigh voltage inUPS.Ifthereisanyabnormalproblempresent, pleaseconsultthe
servicecenterand do notattempttorepairthe equipmentunderanycircumstances.The address
of servicecenterhasbeen detailed on the warrantycard.
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Contents
1.Briefintroduction-------------------------------------------------------------------------------------------------------------------4
1.1.Technologyintroduction-----------------------------------------------------------------------------------------------------4
1.2.Systemand modeldescription--------------------------------------------------------------------------------------------5
1.3.Description ofcommonlyused symbols---------------------------------------------------------------------------------5
1.4.Appearance--------------------------------------------------------------------------------------------------------------------6
1.5.Productspecification and performance---------------------------------------------------------------------------------8
2.Installation----------------------------------------------------------------------------------------------------------------------------8
2.1.Unpacking andinspection--------------------------------------------------------------------------------------------------9
2.2. Safetynotes--------------------------------------------------------------------------------------------------------------------9
2.3.The descriptionoffrontpanel and displaylamp---------------------------------------------------------------------11
2.4.UPSinput connection------------------------------------------------------------------------------------------------------11
2.5.UPSoutputconnection----------------------------------------------------------------------------------------------------12
2.6.Externalbattery connection----------------------------------------------------------------------------------------------13
3.Operation and operating mode------------------------------------------------------------------------------------------------14
3.1.Operation---------------------------------------------------------------------------------------------------------------------14
3.2.Operating mode-------------------------------------------------------------------------------------------------------------15
4.Notesforbatterydisposaland batteryreplacement---------------------------------------------------------------------19
5.Troubleshooting-------------------------------------------------------------------------------------------------------------------20
Appendix:The corresponding formofthe LEDdisplay---------------------------------------------------------------------22
Appendix2:EMCgrade standards----------------------------------------------------------------------------------------------23
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1. Briefintroduction
1.1.Technologyintroduction
ThisUPSisasophisticated pieceof equipment with16 bitMicroprocessorand advanced software
programming technology,high frequency SPWMiscreated tocontrol the inverterof UPS.Thissimplifiesthe
controlcircuit,enhancesthe stabilityofUPS,alsoenablesthe UPS tohaveenhanced real-timeperformance
thatmakesUPS respond the varietyofexternalenvironmentrapidlyand insurethatthe controlcircuit is
compact and reliable.
Digital controltechnologytoavoidthe temperatureexcursion of hardwarespecification
Self-diagnosesbeforestartup helpUPStofind potential failuretoavoidanylosses
Doubleconversion on-line topology, whichmakesthe UPS apuresine wavemachine withconstant
frequency, constantvoltage,lownoiseand no interruption withmainspowerfluctuation,it protectthe user's
equipmentsideallyallthe time.
No transfertimewhen mainpowerfailormainpowerrestore, meetsthe requirementsof precision
instruments.
Standardbypass function
WhenUPS meetsafault,it cantransfertobypass seamlesslyand provide alarm.
Advanced voltage compensation technology, makesthe wide inputvoltage range, reducing the battery
usage, enhancing the adaptiveabilityagainst the bad mainspowervariation.
Advanced wide frequency inputtechnology
Wideinput frequency range of UPS givesUPS agood compatibilitywithgeneratorunderfield
circumstances.
The advanced PFCtechnologyon the input of UPS,improvesthe input powerfactorclosetounity, raises
the powerefficiency,removesthe harmonicnoisefromUPS toutility,lowersUPS operationalcosts, it's
reallyan environmental friendlyprotection powersupply.
Smart management function
Undermainspowerblackout, UPSwouldtransfertobattery mode tosupplypowertoloads, when battery
voltage islow, UPSwouldprotectitself and shutsdownautomatically.When mainpowerrestores, UPS
wouldbe turned on automaticallytosupplypowertoloads.
Coldstartfunction
Whenthereisno input,UPScan be turned on withbattery pack,tomeetthe user'semergency needs.The
coldstartfunction isquitestrong. UPS can becoldstarted on fullload situation.
Fault operation prevention function
Everybuttonhasdelayfunction,onlywhen you pressand holdthe button foracertaintime,required
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operation can be activated.
Smart management function
Undermainspowerblackout, UPSwouldtransfertobattery mode tosupplypowertoloads, when battery
voltage islow, UPSwouldprotectitself and shutsdownautomatically.When mainpowerrestores, UPS
wouldbe turned on automatically.
Viainternalorexternal SNMPcard,UPScan go on internet, you can monitorand manage the UPS status
through allkindsof network managementsystem.
1.2. System andmodeldescription
Honline seriesisan uninterruptiblepowersupplyincorporating double-conversiontechnology. Itprovides
perfect protection specificallyforcomputerequipmentcommunication systemstocomputerized instruments.
Itstrue online double-conversion design eliminatesallmainspowerdisturbances.Arectifierconvertsthe
alternating currentfromthe utilitypowertodirectcurrent. Thisdirectcurrentchargesthe batteriesand
powersthe inverter.Onthe basisofthisDC voltage,the invertergeneratesapuresinusoidalACvoltage,
whichisconstantlypowering the loads.
Computersand peripheralsarethuspowered entirelybythe UPS.Intheeventofpowerfailure,the
maintenance-free batteriespowerthe inverter.
Thismanual isapplicabletothe following models:
1)H1KS, H2KS, H3KSarestandardmodelswithinbuiltbattery.
2)H1KL,H2KL,H3KLarelong backup timemodels,whichareabletoconnectwiththeexternal battery
bank.
1.3. Descriptionofcommonlyusedsymbols
The following symbolswillbe used inthismanualandmayappearduring thecourseofyourpractical
applications.Therefore,all usersshouldbe familiarwiththemand understand theirmeanings.
Notation and explanation
Notation Explanation
Alertyou topayspecialattention
Caution of high voltage
Turnon the UPS
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Turnoffthe UPS
Idleorshut downthe UPS
Alternating current source(AC)
Directcurrent source(DC)
Protectiveground
Alarmsilence
Overload indication
Battery check
Recyclable
Do not disposewithordinarytrash
1.4.Appearance
Front displaypanel
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H2/3KS rearpanel
EXT.BATTERY
COMPUTER
INTERFACE
INTELLIGENTSLOT
BREAKER
NETWORK/FAX/MODEM
SUGERPROTECTION OUT
IN OUTPUT
FAN
INPUT
OUT
IN
H1KLrearpanel
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H2/3KLrearpanel
1.5. Productspecificationandperformance
1.5.1.Generalspecification(standardmodels)
Model H1KS(L) H2KS(L) H3KS(L)
Voltage 220VAC
Frequency 46Hz-54Hz/56Hz-64Hz
Input Amperage(maximum)
12A 20A 30A
Powerrating 1KVA/0.7KW 2KVA/1.4KW 3KVA/2.1KW
Voltage 220VAC(1±2%)
Output Frequency 50/60Hz±0.2
Batteriesnumberand type 3*12V7AH/None 8*12V7AH/None 8*12V7AH/None
1.5.2. Dimensionsand weights
Model H1KS/H1KL H2KS/H2KL H3KS/H3KL
Dimensions(W*H*D)(mm) 145*400*220 192*460*340 192*460*340
Net weight 14/7 34/13.5 34/14
2. Installation
2.1. Unpacking andinspection
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1).When unpacking the UPS,pleasepayattention tothe packing mode and theannexinwhichincludes
user-manual, warrantycard, input powercable, output wiring socket. Thereshouldalsohavean external
battery connection cableifthe model of yourequipmentisoflong backup type.
2). Inspect yourmachine tosee whetherit'sdamaged in the transportation.If damaged orsomeparts
missing, pleasedon't start up yourUPS.
3). Checkifthe equipmentisjustwhat you wanted topurchase. You canaffirmthrough inspecting the model
numberon backpanelof the equipment.
2.2. Safetynotes
1). Keep good aircirculation around UPS and farawayfromwater,flammablegasand corrosive.
2). Don't placeUPSon the slope and thereshouldkeep good aircirculation between in-vent on front panel
bottomand fan outventon back panel.
3). The environmenttemperaturearound UPSshouldkeep inarange of 0℃~40℃.
4).Therewillbe phenomena ofcondensing iftheequipmentisdismantled orinstalled underlowtemperature.
The equipmentcan't be installed unless itisfulldryatinternaland externalof the equipment,otherwise,
therewillbe dangerof electric.
5). The socketthat suppliespowertoUPS shouldbe placed nearthe UPS and easy.
2.3.Thedescriptionoffrontpanel anddisplay lamp
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2.4. UPSinputconnection
Whenconnectpowercable,pleaseusesuitablesocketwithover-currentprotection.The rating forH1KS(L)
shouldbe above6A, forH2KS(L)shouldbe above12A,forH3KS(L)shouldbe above16A.
UPS input connection
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2.5. UPSoutputconnection
1). Output of H1KS(L)usesocket only, pleasedirectlyplug the load cableintothe output socket.
2).OutputofH2KS(L)and H3KS(L)not onlyprovide socketbutalsoofferhigh-currency outputwiring socket,
whichmakeoutput wiring becomeeasy.
UPS model Output socket Wiring socket
H1KS(L) 3 None
H2/3KS(L) 4 Yes
UPS outputconnection
2.6. Externalbattery connection
1). Choosecorrect batteryvoltage according tothe model
The batteriescan't be moreorless connected, otherwiseUPS will work abnormal orbe damaged.Battery
voltage forH1KLis36VDC;forH2KLis96VDC;forH3KLis96VDC.
2). One end of externalbattery cableisconnected toUPS;the otherend isopen styletwocablesused to
connect tobattery pack.The process ofconnecting battery isveryimportant.Operatormust obeythe
instructions.
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Long backup externalbattery connection
A.Firstconnect battery group inseriesand ensurecorrect batteryvoltage.
B.Extended batterycablemustbe connectedtobatteryfirst(do notconnecttoUPSfirst;otherwisetherewill
be dangerof(electricshock). Red cableconnect withbattery anode “+”and black cableconnectwith
cathode”–“.
C. Don't connectanyload toUPS,put through utilitytoUPS afterthe input wirehasbeen connected well.
D. Afterplug the battery extended cableintoUPS battery socket, the connection iscompleted,atthe same
timeUPS startstocharge batteries.
3. Operation andoperating mode
3.1.Operation
3.1.1.Turnon the UPSwithutilitypowersupplied (inlinemode/ACmode)
Pleasefirstlyuseofinternal batterymodels.
A.Whenyou operatefirsttime,pleaseopen thebattery breakercoverplateand turnonthebattery
breaker.Then closethe batterybreakercoverplate.
B.Afteryou makesurethatthepowersupplyconnectioniscorrect,setthe inputbreakerinthe “ON”
position first.Atthistimethe fan rotatesand the UPS suppliespowertothe load viathe bypass.The UPS
operatesinbypassmode.
C.Topoweron the UPS bysimplypressing the “ON”button continuouslyformorethan 1second.
D.When being powered on,the UPS will performself-diagnosis,withthe load/battery levelLEDsturned
on and then offone afteranotherinascending order.Afewsecondslater,the INVLEDisturned on,the UPS
isalreadyrunninginutilitypowermode. If theutilitypowerisabnormal,theUPSwill operateinbatterymode
without outputinterruption of the UPS.
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3.1.2.Turnon the UPSwithno utilitypowersupplied (in battery mode)
A. Press the “ON”button continuouslyformorethan 1second topoweron the UPSForlong backup time
model(“S”model), pleasemakesurethatthe battery breakerisin “ON”position.
B.During the courseofstarting up,the UPS hasthe sameaction asifitisconnected toutilitypower
exceptthatthe utilitypowerLEDisnot turned on and the battery LEDisturned on instead.
3.1.3.Turnoffthe UPS withutilitypowersupplied (inlinemode/ACmode)
A.Press the “OFF”button continuouslyformorethan 1second toturnoffthe inverterofthe UPS
immediately.
B.When beingpowered off, the UPSwill performself-diagnosis, the load/batterylevelLEDswillbeturned
on and then offone afteranotherinascending order,then the INVLEDwillbe turned offand bypassLEDwill
be turned on.The UPSisworking inbypass mode.
C. Upon completion ofthe abovetoturnit off, output ofelectriccurrent ofthe UPS isstillpresent. Inorder
tocutoffthe outputfromthe UPS,simplycutoffthe utilitypowersupplyand the UPS willperform
self-diagnosis,finallynotanydisplayisshownon the displaypaneland no voltage outputisavailablefrom
the UPS output.
3.1.4.Turnoffthe UPS withno utilitypowersupplied (inbattery mode)
A. Press the “OFF”button continuouslyformorethan 1second topowerofftheUPS.
B.When beingpowered off, the UPSwill performself-diagnosis, the load/batterylevelLEDswillbeturned
on and then offone afteranotherinascending order.Finallynotanydisplayisshownonthe displaypanel
and on voltage isavailableformthe UPS output.
Suggestions:pleaseturnoffthe connected loadsbeforeturningon theUPS andturnonthe loadsone by
one afterthe UPSisworking inINVmode.Turnoff allof the connected loadsbeforeturning off the UPS.
3.2.Operatingmode
3.2.1. Utilitypowermode
The displaypanelinutilitypowermode isshowninthefollowing diagram,the utilitypowerLEDand the
INVLEDareturned on,the load levelLEDswill beturned on inaccordancewiththe load capacity
connected.
A.Ifthe battery LEDisturned onand the utilitypowerLEDflashes, itindicatesthe voltage orfrequency of
the utilitypowerhasexceeded the normal range, the UPS operatesinbattery mode.
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Fig3-1:Theutilitypowermode
B. If outputoverloaded,the load levelLEDswillbe turned on and alarmwillkeep twiceevery second. You
shouldget ridof someunnecessary loadsone byone todecreasethe loadsconnected totheUPSless than
90% of itsnominal powercapacity.
Note: pleasefollowthe following stepstoconnect the generator;
lActivatethegeneratorandwaituntil theoperation isstablebeforesupplyingpowerofthe generatorto
the UPS (be surethatthe UPS isinidlemode).Then turnon the UPS according tothe start-up
procedure.Afterthe UPSisturned on, then the loadscan be connected totheUPS one byone.
lThe powercapacityofthe ACgeneratorshouldbe atleast twiceoftheUPS capacity.
3.2.2Battery mode
The displaypanelinbattery mode isshowninthe following diagramFig3-2.The batteryLEDand the INV
LEDareturned on.The displayed numberof thebatterylevelLEDswillbeturned on inaccordancewiththe
battery capacity.Notethatthe load levelLEDsinutilitypowermode will indicatethe levelofthe battery
capacityinbattery mode instead.
A.When the UPS isrunning inbattery mode,the buzzerbeepsonceevery 4again,the buzzerwillstop
beeping (insilencemode).Press the “ON”button onceagainformorethan 1second toresumethe
alarmfunction.
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Fig3-2: Batterymode diagram
B.Whenthe battery capacitydecreases,the numberofthe battery capacityLEDsturned on willbe reduced.
Ifthebatteryvoltage descendstothe alarmlevel,thebuzzerwill beep onceeverysecond toremind the
usersofinsufficientbattery capacityand the UPSissoon going toshutdownautomatically.Then the
load operationsshouldbe carried outpromptlyand the loadsshouldbe eliminated one byone.
3.2.3. Bypassmode
The displaypanelinbypass mode isshowninthe following diagramFig3-3.The utilitypowerLEDand the
bypass LEDarelit. The displayed numberofthe load LEDswillbe turned on inaccordancewiththe load
capacityconnected. The UPSwill beep onceevery2minutesinbypass mode.
lThe utilitypowerLEDflashes.Itshowsthatthe voltageorfrequency ofthe utilitypowerhasexceeded
the normal range ofthe UPS.
Fig3-3: UPSbypass mode diagram
lOtherindicationson the displaypanelarethe sameinutilitymode.
lThe UPSdoesnothavethe backupfunction when itisinbypass mode. The powerused bythe load is
supplied fromthe utilitypowerviainternalfilter.
3.2.4.Abnormalitymode
Incasethe fault LEDisturned on whenthe UPS isinuse, it showsthat the UPS isoperating inabnormal
mode.Pleaserefertothe troubleshooting insection 6fordetail.
3.2.5. Backup timeforthe standardmodel
The backup timeofthe long backup timemodel isdependenton the externalbattery packcapacityand the
load levelaswell asotherfactors.
The backup timeofstandardmodel mayvary fromdifferentmodelsand load level,pleaserefertothe
following:
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3.2.6. Communication port
Intelligent slot
Thisseriesisequipped withanintelligentslotforweb power(optionalaccessory) orotheroptionalcardto
achieveremotemanagement ofthe UPSthrough internet/intranet.Pleasecontact yourlocaldistributorfor
furtherinformation,
RS232 Interface
The following arethe descriptionsand pinassignmentof RS232 DB-9port:
Baud rate: 2400bps
Databit:8bit
Ending bit:1bit
Paritybit:none
DB-9pinassignment:
Pinnumber Function description I/O
3 Rx Input
2 Tx Output
5 Ground GND
Optional AS400 interface
Thisoptional AS400 cardprovidesdry contactclosuresignal “OPEN”or “CLOSE”.
RS232 Interface
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The following arethe pinassignment and the descriptionsofAS400 card:
PIN1：UPS failure(normallyopen, activeclose)
PIN2：Summary
PIN3：Ground
PIN4：Remoteshutdown
PIN5：Common
PIN6：Bypass active(relayclose)
PIN7：Battery low
PIN8：UPS On(relayclose)
PIN9：UtilityPowerfailure(normallyopen, activeclose)
3.2.7. Batterymaintenance
ThisseriesUPSonlyrequiresminimalmaintenance.The batteryused forstandardmodelsarevalue
regulated sealed lead-acidmaintenancefree battery.Thesemodelsrequireminimalrepairs.Theonly
requirementistocharge the UPS regularlyinordertomaximizethe expected lifeof the battery.When being
connected tothe utilitypower,whetherthe UPSisturned on ornot,the UPS keepscharging the batteries
and alsooffersthe protectivefunction ofovercharging and over-discharging.
lThe UPS shouldbe charged onceevery4to6monthsif it hasnot been used foralong tine.
lInthe regionsofhotclimates,thebatteryshouldbecharged and discharged every2months.The
standardcharging timeshouldbe atleast 12 hours.
lUndernormal conditions,the battery lifelasts3to5years.Incaseifthe battery isfound notingood
condition,earlierreplacementshouldbe made.Batteryreplacementshouldbe performed byqualified
personnel.
lReplacebatterieswiththe samenumberand sametypeofbatteries.
lDo notreplacethebatteryindividually.Allthe batteriesshouldbereplacedatthesametimefollowing
toe instructionsof the battery supplier.
Normally,the batteriesshouldbe charged and discharged onceevery4to6months.Charging should
beginaftertheUPSshutsdown automaticallyinthe courseofdischarging,the standardchargingtime
forthe standardUPS shouldbe atleast 12 hours.
Normally,the batteriesshouldbe charged and discharged onceevery4to6months.Charging should
beginafterthe UPSshutsdownautomaticallyinthe courseofdischarging,the standardcharging timeforthe
standardUPS shouldbe atleast 12 hours.
AS400 Interface
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4. Notes forbattery disposal andbattery replacement
●The battery of standardunitisofvalveregulated, maintenancefree.Itcan attainexpectantlifeonlyby
keeping frequent charging. Regardless ofUPS on oroff when UPS connectstoutilitypower, the battery is
charged allthe timeand UPSoffersprotection forover-charge and over-discharge.
●Normallythe battery lifeisthree tofiveyearsand the battery must bereplaced ahead oftimeoncethere
presentsanyabnormal status. The batteryreplacement must onlybe performed byqualified personnel.
●It isinadvisabletoreplaceasinglebattery.Operatorshouldobeythe instruction of battery distributor
whenreplacing allbatteries.
●The batteriesshouldbe charged and discharged onceeveryfourtosixmonths. AfterUPS discharged to
off,the batteriesshouldbe recharged. The charge timeofstandardunit must be morethan 12 hours.
●The battery must be charged and discharged onceeverytwomonthsinhigh-temperaturearea.The
charge timeofstandardunitsmust be morethan twelvehours.
1.Ifitisnecessary toreplaceanyconnection cables,pleasepurchasethe originalmaterialsfromthe
authorized distributorsorservicecenters, soastoavoid overheat orspark resulting infiredue toinsufficient
capacity.
2. Do not disposeofbatteriesorbatterypacksinafire,theymayexplode.
3.Do notopen ormutilatebatteries,released electrolyteishighlypoisonousand harmful tothe skinand
eyes.
4. Do not short the positiveand negativeof the battery electrode, otherwise, itmayresultinelectricshock
orfire.
5.Makesurethatthereisno voltage beforetouching the batteries. The batterycircuitisnotisolatedfrom
the inputpotential circuit. Theremaybe hazardousvoltage betweenthe battery terminalsand ground.
6. Even though the input breakerisdisconnected, the componentsinside the UPS arestillconnected with
the batteries,and therearepotentialhazardousvoltages.Therefore,beforeanymaintenanceand repairs
work iscarried out, switchoffthe breakerofthe battery pack ordisconnectthe jumperwireofconnecting
betweenthe batteries.
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7. Batteriescontainhazardousvoltage and current. Battery maintenancesuchasthe battery replacement
must be carried outbyqualified personnelwho areknowledgeableabout batteries. No otherpersonsshould
handlethe batteries.
5.Troubleshooting
The following messagesarethe messagesthat userswouldfind on UPSwhen itmeetssomeproblem,
withthe useof suchmessages, userscan knowwherethe problemsareand howtodealwithsuch
problems.
◆Faultindicatoron,indicatesUPShasdetected somefault. Buzzerbeeps,indicateUPS need tobe paid
attention to.
◆Severalfaultindicatorsand statusindicatorson, aretohelpthe usertodiagnosefault.
Problem Possiblecause Solution
The #1 fault LEDand the #6
LEDareturned on,the
buzzerbeepscontinuously
The UPS shutdowndue to
internal overheat Makesurethe UPS isnot overloaded; the air ventsarenot blocked and the ambient
temperatureisnot too high.Wait for10
minutesforthe UPStocooldownbefore
turning on again. Iffailed,pleasecontact the
distributororservicecenter.
The #1 fault LEDand the #2
and #5 LEDareturned on,
and the buzzerbeeps
continuously
The UPS outputisshort
circuited. Turnoffthe UPS.Removeallthe loads. Ensurethat the load isnotfailed orthe UPS
hasno internalfaultsbeforeturning iton
again.Iffailed,pleasecontactthe distributoror
servicecenter.
The #1 fault LEDand the #4
LEDareturned on,the UPS
beepscontinuously
The UPS shutsdowndue
toitsinternal fault. Pleasecontact the distributororservice center.
The #1 fault LEDand the #5
LEDareturned on,the UPS
beepscontinuously
The UPS shutsdowndue
toitsinternal fault. Pleasecontact the distributororservice center.
The #1 fault LEDand the #3
LEDareturned on,the UPS
beepscontinuously
Overcharging protection The chargerofthe UPSisfailed.Please
contact the distributororservicecenter.
The utilitypowerLEDflashes The voltage orfrequency of
the utilitypowerisoutofthe
input range of the UPS
The UPS isrunning inbattery mode. Tosave
yourdataand closethe application program.
Makesurethe utilitypoweriswithinthe input
voltage orfrequency range permitted bythe
UPS.
The #1 fault LEDand the #2
LEDareturned on,the UPS
beepscontinuously
The UPS isoverloaded or
the load equipmentisfaulty
Check the loadsand removeallnon-critical
equipment. Recalculatetheload powerand
reducethe numberofloadsconnected tothe
UPS. Checkthatthe loadsarenotfailed.
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