Datasheet

1
2
RC-NC
CN50
RC+-S DC-OK
+SGND
7
-S
8
Fig3.1
LOAD
-
+
TB2
+V -V
CN50
LED
7
1
8
2
FileName:USP-500-SPEC2010-10-18
500WSingleOutputwithPFCFunction
US P- 500 se r i es
3.RemoteSense
Theremotesensingcompensatesvoltagedropontheloadwiringupto0.5V.
Senselinesshould
betwistedinpairs
-S+S
(pin2,8)(Pin7)
4.CurrentSharingwithRemoteSensing(Optionalfor24V&48V)
USP-500hasthebuilt-inactivecurrentsharingfunctionandcanbeconnectedinparalleltoprovidehigheroutputpower:
(1)Paralleloperationisavailablebyconnectingtheunitsshownasbelow.
(2)Differenceofoutputvoltagesamongparallelunitsshouldbelessthan2%.
(3)Thetotaloutputcurrentmustnotexceedthevaluedeterminedbythefollowingequation.
(4)Inparalleloperation2unitsisthemaximum,pleaseconsultthemanufacturerforapplicationsofmoreconnectinginparallel.
(5)Thepowersuppliesshouldbeparalleledusingshortandlargediameterwiringandthenconnectedtotheload.
(+S,-S,CSandGNDareconnectedmutuallyinparallel).
(outputcurrentatparalleloperation)=(Ratedcurrentperunit) (Numberofunit) 0.9
LED LED
TB2 TB2
PSU PSU
-V -V
CN50 CN50
+V +V
7 7
1 1
2 2
8 8
Fig4.1
Note:1.Inparallelconnection,maybeonlyoneunit(master)operateifthetotaloutputloadislessthan2%ofratedloadcondition.
TheotherPSU(slave)maygointostandbymodeanditsoutputLEDandrelaywillnotturnon.
2.2%min.ofdummyloadisrequired.
1
2
RC-CS
CN50
RC+-S
GND
DC-OK
+S
7
-S
8
LOAD
Senselinesshould
betwistedinpairs
+V -V
CS
(pin1)
GND
(pin5)
-S
(pin2,8)
+S
(pin7)