SD-500H-48 View Datasheet(PDF) - Mean Well Enterprises Co., Ltd.
Part Name
Description
Manufacturer
SD-500H-48 Datasheet PDF : 4 Pages
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500W Single Output DC-DC Converter
SD-500 series
Function Description of CN3
Pin No. Function Description
1
+S
Positive sensing. The +S signal should be connected to the positive terminal of the load. The +S and -S leads should be twisted in pair to
minimize noise pick-up effect. The maximum line drop compensation is 0.5V.
2
-S
Negative sensing. The -S signal should be connected to the negative terminal of the load. The -S and +S leads should be twisted in pair to
minimize noise pick-up effect. The maximum line drop compensation is 0.5V.
3
O/P OK
Open collector signal, reference to pin4(GND). Low when PSU turns on. The maximum sink current is 10mA and the maximum
external voltage is 13V.
4
GND These pins connect to the negative terminal (-V).
5
RC Remote ON/OFF
6
RCG Remote ON/OFF ground
Function Manual
1.Remote ON/OFF
(1)Remote ON/OFF control becomes available by applying voltage in CN3
(2)Table 1.1 shows the specification of Remote ON/OFF function
(3)Fig.1.2 shows the example to connect Remote ON/OFF control function
Table 1.1 Specification of Remote ON/OFF
Connection Method Fig. 1.2(A)
Output on
SW Open
Output off
SW Close
Fig. 1.2(B)
V=0~0.8Vdc
V=4~10Vdc
Fig.1.2 Examples of connecting remote ON/OFF
(A)Using external voltage source
(B)Using external voltage source
1K
5V
RC
SW
RCG
1K
RC
V
RCG
2.Output OK signal
"Output OK" is an open collector signal.
It indicates the output status of the PSU. It can operate
in two ways : One is sinking current from external signal ;
the other is sending out a voltage signal.
2-1 Sink current :
The maximum sink current is 10mA and the maximum
external voltage is 13V.
2-2 Voltage signal :
Between O/P OK(pin3) and GND(pin4)
Output Status
0 ~ 0.5V
ON
12 ~ 13V
OFF
+Vo +Vo -Vo -Vo +V ADJ. CN3
TB1
15
26
1 CN3 5
+S O/P OK RC
-S GND RCG
2
6
File Name:SD-500-SPEC 2011-08-23
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