USP-500-12(2010) 데이터 시트보기 (PDF) - Mean Well Enterprises Co., Ltd.
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USP-500-12 Datasheet PDF : 4 Pages
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500W Single Output with PFC Function
3.Remote Sense
The remote sensing compensates voltage drop on the load wiring up to 0.5V.
USP-500 series
CN50
1
2
7
8
LED
TB2
+V
-V
Sense lines should
be twisted in pairs
+S
(Pin7)
+-
LOAD
-S
(pin2,8)
1
CN50
7
NC RC- GND +S
-S RC+ DC-OK -S
2
8
Fig 3.1
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.
(+S,-S,CS and GND are connected mutually in parallel).
(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.
(output current at parallel operation)=(Rated current per unit) (Number of unit) 0.9
(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.
CN50
1
2
7
8
LED
PSU
TB2
+V
-V
CN50
1
2
7
8
LED
PSU
TB2
+V
-V
GND
(pin5)
+V
-V
LOAD
Sense lines should
be twisted in pairs
Fig 4.1
+S
(pin7)
-S
(pin2,8)
CS
(pin1)
1
CN50
7
CS RC- GND +S
-S RC+ DC-OK -S
2
8
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.
File Name:USP-500-SPEC 2010-10-18
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