MEAN WELL NMP1K2 [12/12] Series
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MEAN WELL NMP1K2 [12/12] Series

MEAN WELL NMP1K2 [12/12] Series
650W/1200W Modular Power
NMP series
File Name:NMP-SPEC 2018-09-18
9. CURRENT SHARING (CS)
8. T-Alarm Signal
TTL signal output for over temperature alarm. The maximum sourcing current is 10mA.
Between T-Alarm (CN32 PIN 5) and GND-P (CN32 PIN 3 or 4) Internal temperature (U702)
4.5~5.5V
4.5~5.5V
0~0.5V
Exceeds the limit of temperature alarm.
Exceeds the “safe limit” of temperature alarm.
The internal temperature is normal.
Output Status
OFF
ON
ON
NMP1K2
1
RC1
(CN32 - PIN6)
T-Alarm
(CN32 - PIN5)
GND-P
(CN32 - PIN3 or 4)
5
2
6
CN32 CN32
6 6
5 5
2 2
1 1
TB1 TB1
N N
L L
+5V
-AUX-P
+5V
-AUX-P
RC1
GND-P
T-Alarm
GND-P
(1) Parallel operation is available by connecting the NMS-240 shown as below (CS, GND are connected mutually in parallel).
(2) Difference of output voltages among parallel NMS-240 should be less than 0.2V.
(3) The total output current must not exceed the value determined by the following equation (Output current at parallel operation)
= (The rated current per NMS-240) x (Number of NMS-240) TOTAL output power (NMP650 is 650W max.; NMP1K2 is 1200W max.) .≦
(4) In parallel operation 4 or 6 NMS-240 (NMP650 is 4 SLOTS; NMP1K2 is 6 SLOTS) is the maximum, please consult the manufacturer for other applications.
(5) The power supplies should be paralleled by using short and large diameter wiring and then connected to the load.
(6) In parallel connection, maybe only one NMS-240 (master) operates if the total output load is less than 10% of rated load condition.
The other NMS-240 (slaves) may go into standby mode.
(7) NMS-240 * 6 SLOTS maximum (NMP1K2) NMS-240 * 4 SLOTS maximum (NMP650).、
※ Parallel or series connection accessory, please contact MEAN WELL for details.
(9) 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.
(8) The short protection of C module (5V) or E module(12V) for current sharing is Hiccup mode or constant current limiting
+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
99999910 10 10 10 10 10
GND GND GND GND GND GND
111111222222
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
CN32
NMP650
VR60 VR60 VR60 VR60 VR60 VR60
LED LED LED LED LED LED
CS (PIN6)
GND (PIN1 or 2)
(10) When power modules are in parallel, output current programmable (PC) function shall NOT be in use.

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