Mean Well MP1K0, Инструкция по эксплуатации

Страница: 7 / 14

3. Functions
3.1 Input Voltage Range
3.2 Inrush Current Limiting
3.3 Output Voltage Adjustment Range
3.4 Short Circuit Protection & Over Current Protection (O.C.P.)
3.5 Over Voltage Protection (O.V.P.)
3.6 Over Temperature Protection (O.T.P.)
3.7 Fan Alarm
3.8 Remote Sense - Output Modules
◎
Nominal input voltage range is AC 85~264V or DC 120~370V.
◎
To insure proper operation, AC input should be within the pre-specified range. The wrong input will cause the power supply to
operate improperly, lose the PFC function or even be damaged.
◎
Since the Modular Series have built-in active PFC circuit, there will be lower efficiency and output derating is required when
operating at lower input voltage (<100VAC).
◎
Built-in inrush current limiting circuit.
◎
Minor adjustments can be made to the output voltage of all channels by using a potentiometer. Turning clockwise will increase
output voltage and counterclockwise will decrease output voltage.
◎
Built-in short circuit and over current protection function in each output module. O.C.P. comes into effect at >116% of output rated
current and the output module will automatically recover once the over current condition is removed. (MS-75/150/210/300/360
are constant current type while MD-100 is shut-off type)
◎
Built-in over voltage protection circuit for each output channel.
◎
Built-in 2 sets of over temperature protection circuit. When the internal temperature exceeds the threshold value, the power supply
will shut down automatically. You should switch off V and remove all possible causes of overheating, and then let the power supply
AC
cool down to normal working temperature (needs about 10 minutes~1hour) before turning it back on.
◎
Built-in fan malfunction protection circuit. When the DC fan stop operating (fan lock, wire broken, or connector loosed), all output
modules will be shut down. Please switch off V and send back to our local distributor or MEAN WELL for repair.
AC
◎
When using this function, the sensing wires should either be twisted or shielded to prevent external noise interference.
(refer to figure 3-1)
◎
Built-in remote sense circuit in MS-75, MS-150, MS-210, MS-300 and MS-360.
◎
When Remote Sense is not in use, +S should be shorted to +V and -S to -V. Or +S and -S can be left unconnected.
◎
The voltage drop across the output wires must be limited to less than 0.5V. Also heavy wires with adequate current rating should be used
bV/-V and the load. Please firmly connect the output wires to prevent them from loosing, or the power supply may be out of order.
◎
If long sensing wires are necessary, then Noise Filtering Capacitors C1,C2 and C3 need to be added as figure 3-1.
◎
The power supply unit may become unstable due to the difference in wire impedance and load current. The addition of C1, C2, C3 and
R1 shown in figure 3-1 may help improve output voltage stability. Please contact MEAN WELL for more detail specification of these
components.
◎
The O.V.P. triggering points are different for different output modules. Please refer to the specification sheet for details.
◎
The output module shuts down when O.V.P. is triggered. To restart power supply, please switch off V first and then wait for 10
AC
seconds before switching it back on.
◎
When the output is tuned to a higher voltage, please notice that the load current should be decreased accordingly. The output
wattage of each module should not exceed its rated value under any circumstances.
◎
The external switch, if needed, should have a current rating exceeding the maximum inrush current.
◎
Since the inrush current limiting circuit mainly consists of thermistor and relay, after turning off the power supply, a 10 second
cool down period is recommended before turning it back on. Inrush current will be much higher than the specified value if input
thermistor is not allowed sufficient time to cool down.
5
-V
Output
C2 C1
+V
TWISTED
R1
LOAD C3
-RC
+RC
-S
+S
TWISTED
Figure 3-1 Connection for using the remote sense function
CN33 of MS-300
CN7 of MS-360
CN7 of MS-210
CN20 of MS-150
CN51 of MS-75