4

8

RC-

NC

CN50

RC+

-S

DC-OK

+S

GND

1

-S

5

Fig3.1

LOAD

-

+

TB2

+V

-V

CN50

LED

1

4

5

8

FileName:USP-500-SPEC2007-09-19

500WSingleOutputwithPFCFunction

3.RemoteSense

Theremotesensingcompensatesvoltagedropontheloadwiringupto0.5V.

Senselinesshould

betwistedinpairs

-S

+S

(pin5,8)

(pin1)

4.CurrentSharingwithRemoteSensing(Optionalfor24V&48V)

USP-500hasthebuilt-inactivecurrentsharingfunctionandcanbeconnectedinparalleltoprovidehigheroutputpower:

(1)Paralleloperationisavailablebyconnectingtheunitsshownasbelow.

(2)Differenceofoutputvoltagesamongparallelunitsshouldbelessthan2%.

(3)Thetotaloutputcurrentmustnotexceedthevaluedeterminedbythefollowingequation.

(4)Inparalleloperation2unitsisthemaximum,pleaseconsultthemanufacturerforapplicationsofmoreconnectinginparallel.

(5)Thepowersuppliesshouldbeparalleledusingshortandlargediameterwiringandthenconnectedtotheload.

(+S,-S,CSandGNDareconnectedmutuallyinparallel).

(outputcurrentatparalleloperation)=(Ratedcurrentperunit) (Numberofunit) 0.9

LED

LED

TB2

TB2

PSU

PSU

-V

-V

CN50

CN50

+V

+V

1

1

4

4

8

8

5

5

Fig4.1

Note:1.Inparallelconnection,maybeonlyoneunit(master)operateifthetotaloutputloadislessthan2%ofratedloadcondition.

TheotherPSU(slave)maygointostandbymodeanditsoutputLEDandrelaywillnotturnon.

2.2%min.ofdummyloadisrequired.

4

8

RC-

CS

CN50

RC+

-S

GND

DC-OK

+S

1

-S

5

LOAD

Senselinesshould

betwistedinpairs

+V

-V

CS

(pin4)

GND

(pin2)

-S

(pin5,8)

+S

(pin1)