Mean Well NMP1K2, Инструкция по эксплуатации

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5 12 . Parallel Operation
◎
Up to 4 (NMP650) or 6 (NMP1K2) modules of the same output voltage rating may be connected in parallel.
◎
The combined operation output power of all modules must be less than the Front-End's rated maximum output power
(NMP650: 650W; NMP1K2: 1200W . )
◎
In parallel operation, the parallel accessory (copper plate) should be used to connect the +V and -V of all modules in parallel.
Refer to A1.1 for more details.
◎
In parallel operation, CS and GND pins of CN81 of all modules need to be connected in parallel as shown in Figure 5-11. Refer
to A1.2 for more details on the connection accessory.
◎ The short protection of C module (5V) or E module (12V) during current sharing is Hiccup mode or constant current limiting.
Figure 5
-
10
5 11 . DC-OK Signal and LED Indicator
◎
DC-OK signal and LED indicator are both used to indicate operation status of the output module. When the output module is
operating properly, the DC-OK signal is "HIGH" (4.5~5.5V) and the LED indicator is lit, otherwise, the logics are reversed.
◎
DC-OK is a TTL signal, and the maximum source current is 10mA (4.5~5.5V).
GND
( PIN1 or 2)
DC_OK
( PIN5)
GND
1
GND
2
RC2
VCC2 CS
DC_OK PC
CN81
PV
+S
-S
9
10
NMS-240
+V
-V
-
+
LOAD
CN81
4 6 810
9 7 5 3
2
1
VR60
LED
+V +V +V +V +V +V -V -V -V -V -V -V
CN81 CN81 CN81 CN81 CN81 CN81
NMS
-
240 NMS
-
240 NMS
-
240 NMS
-
240 NMS
-
240 NMS
-
240
CS (PIN6)
GND (PIN1 or 2)
GND GND GND GND GND GND
9 9 9 9 9 9 10 10 10 10 10 10
GND GND GND GND GND GND
1 1 1 1 1 1 2 2 2 2 2 2
RC2 RC2 RC2 RC2 RC2 RC2
PC PC PC PC PC PC
+S +S +S +S +S +S
VCC2 VCC2 VCC2 VCC2 VCC2 VCC2
PV PV PV PV PV PV
-S -S -S -S -S -S
CS CS CS CS CS CS DC_OK DC_OK DC_OK DC_OK DC_OK DC_OK
VR60 VR60 VR60 VR60 VR60 VR60
LED LED LED LED LED LED
CS (PIN6)
GND (PIN1 or 2)
Figure 5
-
11
10
5 13 . Series Operation
◎
Higher output voltage can be acquired by connecting output modules in series.
◎ Total output current should not exceed the current rating of the lowest rated module that is connected in seres.
◎
Difference of rise time in each module may lead to step/ stair shape output voltage waveform during turn on.
◎
The series voltage should be less than 60V in order to satisfy IEC60950-1 SELV (Safety Extra Low Voltage) requirement.
◎ Before making the parallel connection, adjust the voltage of each module individually to the desired voltage, and ensure the
difference in voltage is less than 0.2V.
◎
Remote control shall simultaneously turn ON/OFF all power modules that are in parallel. Per the same control logic, LED and
DC OK signal of power modules in parallel shall turn ON/OFF simultaneously as well.
◎
When power modules are in parallel, output current programmable (PC) function shall NOT be in use.