107
・Allspecificationsaresubjecttochangewithoutnotice.
Instruction Manual
HWS HWS HD HWS ME HWS-P
HWS 1500
InputVoltageRange
Input voltagerange issinglephase85−265VAC(47−
63Hz).Inputvoltage,whichisoutofspecification,may
causeunitdamage.Ratedinputvoltagerangefixdur-
ingsafetystandardapplicationisfrom100Vto240VAC
(50/60Hz).
Whileapplyinginputvoltagefrom85VACto90VAC,out-
putloadcurrentderatingisrequired.
OutputVoltageRange
Outputvoltageissettotheratedvalueatshipping.V.ADJ
trimmeronthefrontpanelsideisusetoadjusttheoutput
voltagewithintherangespecified.Outputvoltagetrimming
rangeiswithin-20 % −+20 %oftheratedoutputvolt-
age(48V,60VModel:-20%−+10%).Turn thetrimmer
clockwisetoincreaseoutputvoltage.Takenotewhenthe
outputvoltageisincreasedexcessivelyovervoltage pro-
tection(OVP)functionmaytriggerandoutputvoltagewill
shutdown.
Usetheoutputpowerofthepowersupplybelowtherated
outputpowervaluewhenyouraisetheoutputvoltage.
OverVoltageProtection(OVP)
TheOVPfunction(Invertershutdownmethod,manualreset
type)isprovided.OVPfunctionoperateswithin125-145%
oftheratedDCoutputvoltagevaluevalue(3-7Vmodel:
125-140 % ,36V type: 125-138 % ,48V type: 115-135,60V
model:115-125%),andtheoutputwillbeshutdownwhenOVP
functiontriggers.WhenOVPfunctionoperates,theinputpower
iscutoffforafewminutes,andthenpowerisre-inputorremote
ON/OFFcontrolsignalshallbeinputforrecoveryoftheoutput.
OVPvalueisfixedandcannotbeadjusted.
OverCurrentProtection(OCP)
TheOCPfunction(Constantcurrentlimiting,Timedelay
shutdowntype)isprovided.OCPfunctionoperateswhen
theoutputcurrentexceeds105%ofmaximumDCoutput
currentspecificationandtheovercurrentor shortcircuit
conditioncontinues5-second ormore, theoutput willbe
shutdown.WhentheOCPistriggered,theinputpower
iscutoffforafewminutes,andthenpowerisre-inputor
remote ON/OFFcontrol signal should be inputfor recov-
eryoftheoutput.TheOCPsettingisfixedandnottobe
adjustedexternally.
OverTemperatureProtection(OTP)
Overtemperatureprotectionfunction(manualresettype)
isprovided.Whenambientorinternaltemperaturerises
abnormally,OTPwillshutdowntheoutput.WhenOTPis
triggered,inputpoweriscutoffandallowsufficientcooling
toresettheOTPfunction.Thenpowerisre-inputorre-
moteON/OFFcontrolsignalshouldbeinputforrecovery
oftheoutput.
LowOutputDetectionCircuit(PF
)
Lowoutputvoltagedetectioncircuitisprovided.Power
Failsignal(PFsignal)willoutputwhenoutputvoltagede-
creasebyeitherthedroporbrownoutoftheinputvoltage
orOCP,OVPandOTPfunctionoperation.PF signal will
turnHighleveltoindicatetheabnormalstatusofthe
powersupplywhentheoutputvoltagedecreaseto80 %
oftheoutputvoltagesettingvalue.However,thereisa
possibilitythatPFsignalmaynotoutputduringparallelop-
eration.ThePFsignalcircuitisinsulatedfromthepower
supplyinputandoutputcircuitanditisanopencollector.
TOGterminalisgroundforPFterminal.
WhentheBuilt-inFan Motorofthispowersupplyunit
stops,PFsignalwillturntoHandtheoutputpowerwill
shutdown.TheBuilt-inFanMotorisacomponentwith
lifetime.Werecommendaperiodicreplacement.Please
contactoursalesoffice.Replacementisatcustomersex-
penses.
RemoteSensing(+S,-Sterminal)
Remotesensingfunctionisprovidedto compensatefor
voltagedropacrossthewiringfromthepowersupplyout-
putterminalstotheloadinput terminals. Connect+S
terminalto+terminaloftheloadand-Sterminalto-
terminaloftheloadwithsensingwires.Thetotallinevolt-
agedrop(+sidelineand-sideline)shallbelessthan0.3V.
Incasethatsensinglineistoolong,itisnecessarytoput
anelectrolyticcapacitoracrosstheloadterminals.
Pleasetakenotethattheelectrolytic capacitor hasgen-
erationofheatetc.donebytheripplecurrentdependingon
connectedload.Therefore,theelectrolyticcapacitormust
havearipplecurrentallowancehigher then theoutput
ripplecurrent.IfCN01(orCN02)isinuse,terminal+S,-S
forCN02(orCN01)mustbeinopencondition.
+S
+
-
-
S
+
+
-
Whenthefunctionofremotesensingisnotinused,connect+S
terminalto+Vterminal,and‒Sterminalto‒Vterminalbytheat-
tachmentconnector.
Ifremotesensingterminalsareopened,thestabilityandtheac-
curacyoftheoutputdeteriorate.Therefore,terminal+S,-Smust
beconnected.
RemoteON/OFFControl
RemoteON/OFFcontrolisprovided.Output can bere-
motelyswitchONandOFFby using CNTterminaland
TOGterminaleventhoughinputis connected. Theout-
putisturnedtoONwhen TOG andCNTterminalsare
shortedandoutputisturnedtoOFFwhentheseterminals
areopened.Whenthefunctionisnotused,connectTOG
andCNTterminalswithshortpiece. The standardsfor
thisfunctionare asfollows.TOGterminalis groundfor
CNTterminal.
TOG
CNT
Sinkcurrent:3.5mA
Relay
Transistor
TTL,
andetc.
TheModeofcontrol
CNTLevelforTOGTerminal Output Built-inFanMotor
ShortorL(0−0.8V) ON Rotate
OpenorH(2.4−12V) OFF Stop
1) TTLcompatible.ThemaximuminputvoltagetoCNT
terminalis12V,andthemaximum allowable reverse
voltageis-1V.Thesinkcurrent of CNTterminalis
3.5mA.
2)OutputON/OFFcontrolcanbeenableby a switch,
relayoratransistorON/OFF.When CNT terminal−
TOGterminalisshortedpowersupplyisturnON,and
whenCNTterminal−TOGterminalisopened power
supplyisturnOFF.
3) RemoteON/OFFcontrolcircuitisisolatedfromthe
inputandoutputcircuitofpowersupply.
Itispossibletouseit regardless ofthepositiveand
negativeofthepowersupplyoutput.
2.FunctionsandPrecautions
TOG
PF
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