MEAN WELL MSP-300-3.3 [3/4] Msp 300
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MEAN WELL MSP-300-3.3 [3/4] Msp 300

MEAN WELL MSP-300-12 [3/4] Msp 300
The remote sensing compensates voltage drop on the
load wiring up to 0.5V.
1.Remote Sense
Fig 1.1
Fig 2.1
1
1
7
7
2
2
8
8
CN100
CN100
Sense lines should
be twisted in pairs
AUX
AUX
AUXG
AUXG
DC-OK
DC-OK
GND
GND
RC-
RC-
RC+
RC+
+S
+S
-S
-S
300W Single Output Medical Type
Fi le Name:MSP-300-SPEC 2014-12-12
Function Description of CN100
Function Manual
Between DC-OK(pin6) and GND(pin4)
3.3 ~ 5.6V
0 ~ 1V
Output Status
ON
OFF
2.DC-OK Signal
DC-OK signal is a TTL level signal. High when PSU turns on.
MSP-30 0
seri e s
Pin No. Function
Description
7
7
1
1
8
8
2
2
1
1
2
2
3
3
4
4
5
5
6
6
7
7
CN100
CN100
LOAD
-
+
+S
(Pin7)
-S
(Pin8)
7
6
+S
RC+
Turns the output on and off by electrical or dry contact between pin 4 (RC-), Short: Power OFF, Open: Power ON.
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.
1 AUX
Auxiliary voltage output, 4.75~5.25V, reference to pin 2(AUXG). The maximum load current is 0.3A. This output has the built-in oring
diodes and is not controlled by the "remote ON/OFF control".
8 -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.
4
RC-
Remote control ground.
5 GND
This pin connects to the negative terminal(-V). Return for DC-OK signal output.
3 DC-OK
DC-OK signal is a TTL level signal, referenced to pin5(DC-OK GND). High when PSU turns on.
2 AUXG
Auxiliary voltage output ground. The signal return is isolated from the output terminals (+V & -V).

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