MEAN WELL NMS-240-CN81
Specifications
Manufacturer
MEAN WELL
Manufacturers Part #
NMS-240-CN81
Series
NMS-240-CN81
Factory Pack Quantity
1
Mechanical Style
Modular
Subcategory
AC-DC Power Supply
Datasheet
Extracted Text
NMP-650 / 1K2
Instruction Manual
0. Safety Guidelines ............................................................................................................
1
1. Product Description ........................................................................................................
1
1.1 Description ................................................................................................................
1
1.2 Features .....................................................................................................................
1
2. Order Information .........................................................................................................
1
1
21 . Output Configuration Guide .......................................................................................
1
22 . Notes on Output Configuration .......................................................................................
2
23 . Label Marking ..............................................................................................................
2
3. Mechanical Specification and Input/Output Terminals ..............................................
2
3.1 Mechanism of Front-End
................................................................................................
2
3.2 Mechanism of Output Modules
........................................................................................
3
4. Product Specifications
.................................................................................................
4
4.1 Front-End Specifications
...............................................................................................
4
4.2 Output Module Specifications
....................................................................................
5
5. Functions
.......................................................................................................................
6
5.1 Input Voltage ................................................................................................................
6
5.2 Inrush Current Limiting ..................................................................................................
6
5.3 Output Voltage/ Current Adjustment.................................................................................
6
5.4 Short-Circuit and Over-Current Protection ........................................................................
6
5.5 Over-Voltage Protection .................................................................................................
6
5.6 Over-Temperature Protection and T-Alarm ........................................................................
7
5.7 Fan-Lock Protection ......................................................................................................
7
5.8 Remote Control ............................................................................................................
7
5.9 Output Module Remote Sense .........................................................................................
8
5.10 Auxiliary Power ...........................................................................................................
8
5.11 DC-OK Signal and LED Indicator ....................................................................................
9
5.12 Parallel Operation .......................................................................................................
9
5.13 Series Operation .........................................................................................................
9
.......................................................................................................................
6. Assembly
10
6.1 Assembly Procedures ....................................................................................................
10
6.2 Assembly Example ........................................................................................................
13
7. Notes on Operation
....................................................................................................... 15
7.1 Front-End Mounting ......................................................................................................
15
7.2 Output Wiring Guidelines ...............................................................................................
15
7.3 De-rating .....................................................................................................................
15
7.4 Warranty ......................................................................................................................
15
A. Appendix .......................................................................................................................
16
NMP650,1K2 Family Instruction Manual
0. Safety Guidelines
◎ Risk of electrical shock and energy hazard, please do not remove the case from the power supply unit. The output module
configurations should only be changed by a trained professional.
◎ This unit is cooled by forced-air cooling, so fans and ventilation holes must be kept free from any obstructions. A minimum clearance
of 10cm is recommended.
◎ Please do not perform hot-swap of modules during operation, otherwise there will be risk of damaging the power supply unit and electrical
shock hazard.
◎ Please do not change any components of the unit or make any kind of modifications to the unit.
◎ Please do not install the unit in places with high moisture, high ambient temperature or under direct sunlight.
◎ The input voltage range is 100-240Vac (50/60Hz), please do not input voltage that is over or less than 10% of this range.
◎ The safety protection level of this unit is Class I. The “Frame Ground” ( ) on the power supply unit must be well connected to PE
(Protective Earth).
1. Product Description
1.1 Description
NMP is MEAN WELL's new generation intelligent modular power supply, bringing forth the state-of-the-art Front-End and NMS-
240 output module designs. This family offers output module configurability, intelligent control functions, and 1U low profile
form factor. The NMP family also complies with both ITE and medical safety standards, offering the best flexibility for various
types of applications. The end user will be able to fully customize the output voltages by choosing from 5V, 12V, 24V, and 48V
output modules, which have wide voltage range and adjustment capability that fully covers 3~55V.
1.2 Features
◎ UL/EN60601-1(3rd Edition) Medical safety approval (2x MOPP), 4KVAC Isolation
◎ Low leakage current < 400uA/ 264VAC, touch current < 100uA/ 264VAC
◎ Efficiency up to 91%
◎ 1U low profile mechanical design
◎ Universal AC input/ full range
◎ Built-in active PFC function
◎ Built-in active current sharing and parallel control capabilities
◎ Output voltage programmable (PV)
◎ Constant current level programmable (PC)
◎ Global or Local ON/OFF control
◎ Remote sense for output module
◎ DC-OK signal and LED indicator for output module
◎ Over-temperature protection and T-Alarm on Front-End
◎ Built-in 5V auxiliary power for both Front-End and NMS-240 modules
◎ Forced air cooling by built-in DC fan(s) with fans speed control function
◎ Protections: Short circuit/ Overload/ Over voltage/ Over temperature for all output modules
◎ Surge protection levels that meet industrial standard
◎ 5-years warranty
2.Order Information
2.1 Output Configuration Guide Table 1. Parallel or option code
Code SLOT 1 SLOT 2 SLOT 3 SLOT 4 SLOT 5 SLOT 6
NMP - -
00
SLOT 1 SLOT 2 SLOT 3 SLOT 4 SLOT 5 SLOT 6 ----- ----- ----- ----- ----- -----
650/ 1K2 (650W/ 1200W) 01
----- ----- ----- -----
◎ ◎
02
----- ----- ----- -----
◎ ◎
Parallel or option code
※650W (4 SLOTS)、1200W(6 SLOTS)
(See Table 1.) 03
----- ----- ----- -----
◎ ◎
04 ----- ----- ----- -----
◎ ◎
05 ----- ----- ----- -----
◎ ◎
06 ----- ----- -----
◎ ◎ ◎
Example: NMP 1K2 - C E HH # K -
07 ----- ----- -----
◎ ◎ ◎
08 ----- ----- -----
SLOT 1 O/P: 5V@ 36A ◎ ◎ ◎
09 ----- ----- -----
◎ ◎ ◎
SLOT 2 O/P: 12V@ 20A
10 ----- -----
◎ ◎ ◎ ◎
SLOT 3 O/P: 24V@ 10A
11 ----- -----
◎ ◎ ◎ ◎
SLOT 4 O/P: 24V@ 10A
12 ----- -----
◎ ◎ ◎ ◎
SLOT 5 Blank slot
13 -----
◎ ◎ ◎ ◎◎
(with BLANK-NMS240)
14 -----
◎ ◎ ◎ ◎◎
SLOT 6 O/P: 48V@ 5A
15
◎ ◎ ◎ ◎ ◎ ◎
※ Code 00,,,,,, 01 02 03 06 07 10 for NMP650/ NMP1K2
※ Code 00~15 or for NMP1K2
1
.....
2.2 Notes on Output Configuration
◎ Modules to be in parallel or series connection should be placed in adjacent slots.
◎ The combined operation output power of all modules must be less than the Front-End's rated maximum output power: 1200W for
NMP1K2 and 650W for NMP650.
2.3 Label Marking
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SLOT1 23 4 SLOT1 23 4 5 6
C8 N 1 C8 N 1
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SLOT1 SLOT2 SLOT3 SLOT4 SLOT1 SLOT2 SLOT3 SLOT4 SLOT5 SLOT6
-
V -V
6 ( ,
6 (( , ,
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+V +V
5V 36A 12V 20A 24V 10A 48V 5A
5V 36A 12V 20A 24V 10A 24V 10A 48V 5A 48V 5A
Figure 2-1. NMP650 Product Label Figure 2-2. NMP1K2 Product Label
1 Serial Number.
2 Input Rating.
3 Maximum Output Rating.
4 Safety Marks.
5
Output Encoding.
6
Output Module Terminal Diagram.
3.Mechanical Specifications and Input/Output Terminals
3.1 Mechanism of Front-End
◎NMP1K2
250
14 max.
6.1
219.1 10 max.
+V
4-M4(Both Sides) L=4
-V
2 2
92
122
CN32
6 2
5 1
4-M4 L=4
1 1
Air flow
direction
1
2 TB1
3
1 1
2
9.5
8
80
23.5
20.5
12.2 20 20 20 20 20 14.8 11 8.6
127 41
◎NMP650
250
14 max.
6.1
219.1 10 max.
+V
4-M4(Both Sides) L=4
-V
2 2
122 92
CN32
6 2
5 1
Air flow 4-M4 L=4
direction
1 1
1
2
TB1
3
1 1
※ Mounting Instructions
Chassis of NMP
Hole No. Recommended Screw Size MAX. Penetration Depth L Recommended mounting torque
(thickness 1.6mm)
Mounting Surface
1 M4 4mm 7~1 Kgf-cm 0
2 M4 4mm 7~1 Kgf-cm 0
※ AC Input Terminal Pin No. Assignment
Mounting Screw
Pin No. Assignment Diagram Mx a imum mounting torque
L
1 FG
2 AC/N 12Kgf-cm
3 AC/L
Function Description of CN32
Pin No. Function Description
1,2 +5V-AUX_P Auxiliary voltage output, 4.5~5.5V, referenced to pin 3 & 4(GND-P).The maximum load current is 2A (NMP1K2) or 1.5A (NMP650).
3,4 GND-P Ground.
TTL signal output for over temperature alarm. The maximum sourcing current is 10mA.
5 T-Alarm
High (4.5~5.5V): When the internal temperature exceeds the limit & “safe limit” of temperature alarm.
Low (0~0.5V): When the internal temperature is normal.
Turns the output on and off by electrical or dry contact between pin 6 (RC1) and pin 3 & 4 (GND-P).
6 RC1
Short: Power ON; Open: Power OFF.
3.2 Mechanism of Output Modules
◎NMS-240 Output Module
118.5
20
LED
CN81
1 3 5 7 9
2 4 6810
VR60
-V
+V
※Blank slot
Blank slot should be assembled with BLANK-NMS240, please contact MEAN WELL for details.
※DC Output Terminal Pin No. Assignment
Assignment Diagram Mx a imum mounting torque Recommended screw size MAX. Penetration Depth L
+V, -V 10Kgf-cm M3.5 10mm
3
11 17.5
10.5
4.8
9.5
8
42 23.5
20.5
37.9
12.2 20 20 20 16.8 11 8.6
89 41
Function Description of CN81
Pin No. Function Description
1 GND Ground.
2 GND Ground.
Turns the output on and off by electrical or dry contact between pin 3(RC2) and pin 1&2(GND).
3 RC2
Open: Power ON; Short: Power OFF.
4 Vcc 2 Auxiliary voltage output, 4.5~5.5V, referenced to pin 1&2 (GND).The maximum load current is 10mA.
“DC OK” signal is a TTL level, referenced to pin 1&2 (GND).
5 DC OK
Output modules turn on=4.5~5.5V, turn off=0~0.5V. The maximum sourcing current is 10mA (4.5~5.5V).
Current sharing signal. When units are connected in parallel , the CS pins of the units should be connected to allow for current balance
6 CS
between units. Referenced to pin 1&2 (GND)
7PC Connection for output current programming, referenced to pin 1&2 (GND)
8 PV Connection for output voltage programming, referenced to pin 1&2 (GND)
9 +S
Positive sensing for remote sense.
10 -S Negative sensing for remote sense.
4.Product Specifications
4.1 Front-End Specification
MODEL NMP650 (4 Slots) NMP1K2 (6 Slots)
VOLTAGE RANGE Note.5 90 ~ 264VAC 120 ~370VDC
FREQUENCY RANGE 47 ~ 63Hz
POWER FACTOR PF>0.95 / 230VAC PF>0.98 / 115VAC at full load
INPUT 91%, full case load with H / K module at nominal 24V / 48V only 90.5%, full case load with H / K module at nominal 24V / 48V only
EFFICIENCY(Typ.) Note.4
8.% 8 5 , full case load with each type of module at nominal voltage
AC CURRENT 6.7A/ 230VAC 13.5A/ 115VAC
3.5A/ 230VAC 7.5A/ 115VAC
INRUSH CURRENT 40A/230VAC 25A/115VAC 40A/ 230VAC 25A/ 115VAC
LEAKAGE CURRENT Earth leakage current <400uA / 264VAC, Touch current <100uA/ 264VAC
1200W max.
OUTPUT TOTAL OUTPUT POWER 650W max.
OVER TEMPERATURE Shut down o/p voltage, recovers automatically after temperature goes down
PROTECTION
REMOTE CONTROL RC+/RC-: Short, Power ON RC+/RC-: Open, Power OFF
FUNCTION ALARM SIGNAL TTL signal output for over temperature alarm. Please refer to the Function Manual.
AUXILIARY POWER(AUX) 5V @ 1.5A; tolerance±10%, ripple: 50mVp-p(max.) 5V @ 2A; tolerance±10%, ripple: 50mVp-p(max.)
-30 ~ +70℃℃ (Derate at 50 , refer to "Derating Curve")
WORKING TEMP.
20 ~ 90% RH non-condensing
WORKING HUMIDITY
-40 ~ +85℃, 10 ~ 95% RH non-condensing
ENVIRONMENT STORAGE TEMP., HUMIDITY
TEMP. COEFFICIENT ±℃ 0.03%/ (0 ~ 50℃)
VIBRATION 10~500Hz , 2G 10min./ 1 cycle , 60 min. each along X , Y , Z axes.
rd
SAFETY STANDARDS ANSI/AAMI ES60601-1, TUV EN60601-1, IEC 60601-1 (3 edition), EAC TP TC 004 approved; Design refer to UL62368-1, TUV EN62368-1
ISOLATION LEVEL Primary-Secondary: 2x MOPP, Primary-Earth: 1x MOPP
WITHSTAND VOLTAGE I/P-O/P: 4KVAC I/P-FG: 2KVAC O/P-FG: 0.5KVAC
ISOLATION RESISTANCE I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
Parameter Standard Test Level/ Note
Conducted EN55032 (CISPR32) / EN55011 (CISPR11) Class B
EMC EMISSION Radiated EN55032 (CISPR32) / EN55011 (CISPR11) Class B
Harmonic Current EN61000-3-2 Class A
Voltage Flicker EN61000-3-3 -----
SAFETY &
EN60601-1-2, EN55024
EMC
(Note 5) Parameter Standard Test Level / Note
ESD EN61000-4-2 Level 4, 15KV air; Level 4, 8KV contact
RF field EN61000-4-3 Level 3, 10V/m
EFT / Burst EN61000-4-4 Level 3, 2KV
EMC IMMUNITY
Surge EN61000-4-5 Level 4, 4KV/Line-FG; 2KV/Line-Line
Conducted EN61000-4-6 Level 2, 3V
Magnetic Field EN61000-4-8 Level 4, 30A/m
100% dip 1 periods, 30% dip 25 periods,
Voltage Dips and Interruptions EN61000-4-11
100% interruptions 250 periods
DIMENSION 250*89*41mm (L*W*H) 250*127*41mm (L*W*H)
OTHERS
PACKING 1.45Kg(typ.); 9pcs / 14Kg / 0.98CUFT 2Kg(typ.); 6pcs / 13Kg / 0.88CUFT
4
4.2 Output Module Specification
MODEL
NMS-240-05 NMS-240-12 NMS-240-24 NMS-240-48
CONFIGURATION CODE C E H K
DC VOLTAGE 5V 12V 24V 48V
RATED CURRENT 36A 20A 10A 5A
0 ~ 36A 0 ~ 20A 0 ~ 10A 0 ~ 5A
CURRENT RANGE
RATED POWER 180W 240W 240W 240W
OUTPUT
(NMS-240)
RIPPLE & NOISE (max.) Note.2 100mVp-p 150mVp-p 150mVp-p 250mVp-p
3 ~ 6V 6~15V 15~30V 30~55V
VOLTAGE ADJ. RANGE
VOLTAGE TOLERANCE Note.3 ±2.0% ±1.0% ±1.0% ±1.0%
LINE REGULATION ±0.5% ±0.3% ±0.2% ±0.2%
±1.0% ±0.5% ±0.5% ±0.5%
LOAD REGULATION
SETUP, RISE TIME 1500ms, 60ms at full load
HOLD UP TIME(Typ.) 16ms/ 230VAC @ 75% total output power 10ms/230VAC @ total output power
105 ~ 125% rated output power
OVERLOAD
Protection type: constant current limiting protection
6.1 ~ 7.5V 15.1 ~ 20V 30.1 ~ 37V 56 ~ 66V
PROTECTION
OVER VOLTAGE
Protection type: Shut down o/p voltage, re-power on to recover
OVER TEMPERATURE Shut down o/p voltage, recovers automatically after temperature goes down
REMOTE ON/OFF CONTROL RC+/RC-: Open, Power ON RC+/RC-: Short, Power OFF
REMOTE SENSE Compensate voltage drop on the load wiring up to 0.5V.
6 ~ 15V 15 ~ 30V 30 ~ 55V
3 ~ 6V
OUTPUT VOLTAGE PROGRAMMABLE(PV)
Adjustment of output voltage is allowable. Please refer to the Function Manual.
FUNCTION
OUTPUT CURRENT PROGRAMMABLE(PC) Adjustment of constant current level is allowable. Please refer to the Function Manual.
AUXILIARY POWER(AUX)
5V@10mA; tolerance±10%, ripple: 50mVp-p(max.)
CURRENT SHARING(CS) Please refer to the Function Manual.
DC OK SIGNAL Output modules turn on=4.5 ~ 5.5V, turn off=0 ~ 0.5V. Please refer to the Function Manual.
DIMENSION 118.5*37.9*18mm (L*W*H)
OTHERS
PACKING 0.142Kg(typ.); 72pcs / 11.2Kg / 1.04CUFT
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5
5.Functions
5.1 Input Voltage
◎ Input voltage range is 90~264VAC or 120~370VDC
◎ To ensure proper operation, input voltage must be within the specified range. An incorrect input voltage may cause the unit
operate improperly, lose PFC function, or even damaged in worst case scenario.
◎ The efficiency will be lower at low input voltage range, so the output power needs to be de-rated for input less than 110VAC.
Please refer to Section 7.3 De-rating for more information.
5.2 Inrush Current Limiting
◎ This unit has built-in inrush current limiting circuit.
◎ If adding an external switch (relay/ circuit breaker) at the input side is required, choose switches that are able to withstand inrush
current of the units.
◎ Since the inrush limiting circuit mainly consists of thermistors and a relay, inrush current will be much higher than the specified value
if input thermistor is not allowed sufficient time to cool down. After turning off the AC input power, a 10 seconds cool down period is
recommended before turning it on again.
5.3 Output Voltage/ Current Adjustment
5.3.1 Output Voltage Adjustment via SVR
◎ The output voltage of each module may be trimmed by turning VR60 near the output terminals. Turning VR60 clockwise increases
the voltage, and turning VR60 counter-clockwise reduces the voltage.
◎ When increasing the output voltage, the load current needs to be reduced accordingly to avoid exceeding the maximum output power.
◎ When reducing the output voltage, the load current cannot exceed the maximum rated output current.
5.3.2 Output Voltage Programming (PV)
◎ Connect the external DC source to PV (PIN8) and GND (PIN 1 or 2) on CN81, as shown in Figure 5-1(left).
◎ Relationship between the output voltage and the external DC voltage is shown in Figure 5-1(right).
◎ When increasing the output voltage, the load current needs to be reduced accordingly to avoid exceeding the maximum output power.
Vout
NMS-240
CN81
CN81 100
LED
1 3 5 7 9
2 4 6810
1 9
80
Non-Linear
GND RC2 DC_OK PC +S
VR60 60
50
GND VCC2 CS PV -S
40
-V 12V only
2 10
(E code)
20
LOAD
PV
GND
EXTERNAL PV(Referenced to GND)
( PIN8)
122.5345
( PIN1 or 2) +V
VOLTAGE (DC)
EXTERNAL VOLTAGE (VDC)
Figure 5-1
532 .. Constant Current Level Programming (PC)
◎The constant current level can be trimmed to 40~100% of the rated current by applying external DC voltage. Connection diagram
and relationship curve are shown in Figure 5-2.
Iout
NMS-240
CN81 115 OLP 115%(typ.)
CN81
LED
1 3 5 7 9
100
1 9
2 4 6810
80 Non-Linear
GND RC2 DC_OK PC +S
VR60
60
GND VCC2 CS PV -S
2 10 40
-V
20
LOAD
PC
GND
EXTERNAL
+V PC(Referenced to GND)
( PIN7)
( PIN1 or 2)
VOLTAGE (DC) 1.8 5 6
EXTERNAL VOLTAGE (VDC)
Figure 5-2
5.4 Short-Circuit and Over Current Protection
◎Output modules have built-in short circuit and over current protections. The protection activates when the output is short-
circuited or the output current exceeds 115% ± 10% of the rated output current. The output will automatically recover when the
fault condition is removed.
5.5 Over Voltage Protection
◎ Each output module has built-in over voltage protection.
◎ The OVP trigger points vary depending on the different output modules. Please refer to 4.2 NMS-240 Output Module Specification
for more details.
◎ Once OVP is triggered, leave the units off for 10 seconds before recycling AC power to power on the unit.
6
+
+
OUTPUT VOLTAGE (%)
OUTPUT CURRENT (%)
-
-
5.6 Over Temperature Protection (OTP) and T-Alarm
◎ The Front-End has built-in thermal detection circuit. Once the internal temperature exceeds a preset value, there will be a “HIGH”
signal (4.5~5.5V) sent out through T-ALARM for end system to respond. If the internal temperature continues to increase and exceeds
the “safe limit” value, then the output will shut down automatically. Please switch off the AC input, remove all possible causes, and
then leave the unit to cool down to a normal working temperature (approximately 10 minutes ~ 1 hour) before re-power on.
◎ When the internal temperature is within a normal value, the T-Alarm signal will be a “LOW” signal (-0.1~0.5V).
◎. T-Alarm's maximum sourcing current is 10mA
◎ Figure 5-3 shows T-Alarm (CN32 PIN5) and GND-PC (CN32 PIN3 or 4) connection diagram.
T-Alarm Signal Voltage Internal Temperature (U702) Output Status
0~0.5V The internal temperature is normal ON
4.5~5.5V Exceeds the limit of T-Alarm ON
4.5~5.5V Exceeds the "safe limit" OFF
CN32
NMP1K2 NMP650
CN32 CN32
+5V +5V
2 1
2 1 -AUX-P -AUX-P GND-P 2 1
( PIN3 or 4)
TB1 TB1
GND-P GND-P
6 5 6 5
RC1 T-Alarm
L 6 5 L
N N
T-Alarm
( PIN5)
Figure53 -
5.7 Fan-lock Protection
◎ There is a built-in fan-lock protection circuit. The output of all modules will shut off when the DC fan stops operating (fan-lock, loose
connector, or broken wires). Please turn off the AC power and remove the conditions causing fan-lock. If there are no observable
causes for fan-lock, please remove the unit from your system and send back to our local distributor or MEAN WELL for repair.
5.8 Remote Control
◎ There are built-in remote ON/OFF controls for Front-End and individual output modules.
◎ Connection diagram and control logics are shown below.
◎ Figure 5-4 shows RC1 (CN32 PIN6) and GND-P (CN32 PIN3) connection diagram.
5.8.1 Global ON / OFF
Connection Status Output Status
Short (SW ON) ON
Open (SW OFF) OFF
CN32
NMP1K2 NMP650
CN32 CN32
+5V +5V
2 1
2 1 -AUX-P -AUX-P GND-P 2 1
(PIN3)
TB1 TB1
GND-P GND-P
6 5 6 5
RC1 T-Alarm
6 5
N L N L
RC1
SW
(PIN6)
Figure54 -
5.8.2 Local ON/OFF
◎The NMS-240 modules can be turned ON/OFF individually by using the “local ON/OFF” function.
◎Figure 5-5 shows RC2 (CN81 PIN3) and GND (CN81 PIN1 or 2) connection diagram.
Connection Status Output Module Status
Open (SW OFF) ON
Short (SW ON) OFF
NMS-240
CN81
CN81
LED
1 3 5 7 9
1 9
2 4 6810
GND RC2 DC_OK PC +S
VR60
GND VCC2 CS PV -S
2 10
-V
LOAD
RC2
GND SW
+V
( PIN3)
( PIN1 or 2)
Figure55 -
※ The CN32 connection accessory (included in packaging) must be connected when using the local ON/OFF function.
7
+
-
5.9 Output Module Remote Sense
◎ Built-in remote sense circuit that is able to compensate voltage drop up to 0.5V.
◎ When using this function, the sensing wires should either be twisted or shielded to prevent external noise interference (refer to Figure 5-6).
◎ When not using this function, leave the connection open circuit, or connect +S to +V and -S to -V at the output.
◎ Voltage drop across the output wires must be limited to less than 0.5V. Also wires with adequate current rating should be used
between +V, -V and the loads. Please firmly connect the output wires to prevent them from loosing, or the power supply may be
out of order.
CN81
1 3 5 7 9
LED
CN81 2 4 6810
1 9
Sense lines should
be twisted in pairs
VR60
GND RC2 DC_OK PC +S
GND VCC2 CS PV -S -S
-V
( PIN10)
2 10
LOAD
+V
+S
( PIN9)
Figure 5-6 Connection diagram when using remote sense function
51 . 0 Auxiliary Power
◎ Front-End and output modules have auxiliary power for control circuitry and low power peripherals.
※ Front-End: + 5V- Aux- P is 5V/ 2A (NMP1K2) or 5V/ 1.5A (NMP650) auxiliary output, referenced to GND- P.
+5V-AUX-P
CN32
( PIN1 & 2)
NMP1K2 NMP650
CN32 CN32
+5V +5V
2 1 -AUX-P -AUX-P 2 1
2 1
TB1 TB1
GND-P GND-P
GND-P
6 5 6 5
(CN32 - PIN3&4)
RC1 T-Alarm
L 6 5 L
N N
RC1
( PIN6)
Figure 5-7
※ Output module: VCC2 is 5V/ 10mA auxiliary output, referenced to GND.
NMS-240
CN81
CN81
LED
1 3 5 7 9
2 4 6810
1 9
GND RC2 DC_OK PC +S
VR60
GND VCC2 CS PV -S
-V
2 10
LOAD
GND VCC2
( PIN1 or 2) (PIN4)
+V
Figure 5-8
8
+
+
-
-
51 . 1 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).
NMS-240
CN81 CN81
LED
1 3 5 7 9
1 9 2 4 6810
GND RC2 DC_OK PC +S
VR60
GND VCC2 CS PV -S
-V
2 10
GND LOAD
DC_OK
( PIN1 or 2)
( PIN5)
+V
Figure51 - 0
52 .1 Parallel Operation
◎ Up to 4 (NMP650) or 6 (NMP1K2) modules of the same output voltage rating may be connected in parallel.
◎ 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.
◎ 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.
◎ 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.
NMS-240 NMS-240 NMS-240 NMS-240 NMS-240 NMS-240
CN81 CN81 CN81 CN81 CN81 CN81
-V +V -V +V -V +V -V +V -V +V -V +V
VR60 VR60 VR60 VR60 VR60 VR60
LED LED LED LED LED LED
GND (PIN1 or 2)
CS (PIN6)
GND (PIN1 or 2)
CS (PIN6)
+S -S +S -S +S -S +S -S +S -S +S -S
999999 10 10 10 10 10 10
PC PV PC PV PC PV PC PV PC PV PC PV
DC_OK CS DC_OK CS DC_OK CS DC_OK CS DC_OK CS DC_OK CS
RC2 VCC2 RC2 VCC2 RC2 VCC2 RC2 VCC2 RC2 VCC2 RC2 VCC2
GND GND GND GND GND GND GND GND GND GND GND GND
111111 222222
Figure51 - 1
53 .1 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.
9
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6.Assembly
6.1 Assembly Procedures
STEP 1:
◎ For first time assembly, please remove the Front-End from packaging and proceed to STEP 2.
◎ If the NMP unit has been configured and assembled previously, please turn off the unit and remove all input/ output connections.
◎ The power supply unit may remain hot after power off, please leave the unit to cool for at least 5 minutes before assembly.
STEP 2:
◎ Remove 2 screws each from left and right sides. For reconfiguration, please remove screws from top cover (NMP650: 4 screws;
NMP1K2: 6 screws). Before lifting top cover, make sure all screws have been removed.
Figure 6-1. First time assembly
M3*6
M3*. 3 3
Figure 6-2. Reconfiguration - assembled previously
STEP 3:
◎ After removing the top cover, output modules may be installed or removed. Please refer to diagrams below for installation and
removal instructions. For first time assembly, it is recommended to install in order from right to left, starting with slot 4 (NMP650) or
slot 6 (NMP1K2). When installing a module, make sure all 6 pins of the connectors are inserted into the correct sockets. For modules
that are installed in the left most and right most slots, ensure the insulation Mylar films are positioned correctly. For empty slot(s),
blank module(s) (BLANK-NMS240) must be installed to ensure proper airflow throughout the unit.
2
2
1
1
Install: Insert 1 each module in a straight and leveled manner. Remove: Lift 1 output module slightly.
2 All 6 pins must be inserted into the correct sockets. 2 Grab the circled location and lift module
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Mylar film
Mylar film
Note : Mylar films need to fold over the modules
STEP 4:
◎ Once all modules have been installed or reconfigured, place the top cover back and secure with screws as shown below. While
securing the top cover, ensure all modules are held secure by the notches and screws. Please set the electric screw driver's
torque setting to 6kgf-cm.
M3*6
M3*. 3 3
Note: Make sure all modules are slotted into the notches circled in red
STEP 5:
◎ Apply corresponding output module label stickers to the Front-End top cover.
SLOT1 23 4 5 6
C8 N 1
<��3;�
*+��,"������������� ���
SLOT1 SLOT2 SLOT3 SLOT4 SLOT5 SLOT6
+
V
6 (( , ,
-
V
5V 36A 12V 20A 24V 10A 24V 10A 48V 5A 48V 5A
11
STEP 6:
◎ Connect AC power to the NMP unit and test each module to ensure proper operation.The green LED indicator on module should light up.
◎ Measure the output voltage of each module and make sure it is within the specified output voltage tolerance range. If the load requires
a different voltage that is within the specified voltage adjustment range, adjust the voltage by turning the SVR as shown below. Turning
the SVR clockwise will increase the voltage, and turning the SVR counter-clockwise will decrease the voltage. Once the output voltages
of all modules have been tested and adjusted to the desired values, the output configuration is done.
Output Module in Series Connection
Higher output voltage can be acquired by connecting adjacent output modules in series. Example: if a load requires 60V to
power, then two NMS-240-24 can be connected in series for this requirement. First, follow assembly steps STEP 1-STEP 6 and
install the two NMS-240-24 modules in slot 1 and slot 2. Second, adjust the output voltage of each module to 30V via SVR.
Finally, use the FAS-005 series connection accessory to connect the -V terminal of slot 1 to the +V terminal of slot 2. Measure
and verify that the voltage across +V terminal of slot 1 and - V terminal of slot 2 is 60V.
Recommended torque setting for output terminal screws is 6kgf-cm
NOTE:
◎ Total output current should not exceed the current rating of the lowest rated module that is connected in series.
◎ 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.
◎. Series connection accessory: FAS-005
Output Module in Parallel Connection
Higher output current can be acquired by connecting adjacent output moduels in prallel. Example: connecting three NMS-240-
12 in parallel. First, follow assembly steps STEP 1-STEP 6 and install the three NMS-240-12 modules in slot 1, slot 2, and slot
3. Second, measure and adjust the voltage of each modules to be within 0.2V. Finally, use two 3-unit parallel accessory (FAP-
010) to connect the +V and -V terminals of the three modules (left figure). The CS and GND pins of CN81 also need to be
connected together using accessory NMS-240-P3 (right figure), as shown below.
Recommended torque setting for output terminal screws is 6kgf-cm
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If 4, 5 or 6 units need to be connected in parallel, please use the configurations shown below.
2x2x2
3x2x2
3x2x3
NOTE:
◎ Up to 4 (NMP650) or 6 (NMP1K2) modules of the same output voltage rating may be connected in parallel.
◎ Before making the parallel connection, adjust the voltage of each modules individually to the desired voltage, and ensure the
difference in voltages is less than 0.2V.
◎ 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, 2-unit
parallel accessory: FAP-009, 3-unit parallel accessory: FAP-010.
◎ In parallel operation, CS and GND pins of CN81 of all modules need to be connected in parallel. MEAN WELL offers connection
accessories for 2 units (NMS-240-P2), 3 units (NMS-240-P3), 4 units (NMS-240-P4), 5 units (NMS-240-P5), and 6 units (NMS-240-P6).
◎ The overload protection of C module (5V) during current sharing is Hiccup mode.
62 . Assembly Example
NMP1K2-HHCEK#-01
Slots SLOT 1 SLOT 2 SLOT 3 SLOT 4 SLOT 5 SLOT 6
Models
24V @ 10A 24V @ 10A 5V @ 36A 12V @ 20A 48V @ 5A Blank
Parallel
◎◎ ----- ----- ----- -----
a.Remove NMP1K2 from the packaging. Since this is first time assembly, all slots are empty. Remove the 2 screws each from left and
right sides, and remove the top cover.
2
1
b.Install modules to the NMP1K2 Front-End in order from right to left: Blank Module, NMS-240-48, NMS-240-12, NMS-240-5V, and
two NMS-240-24.
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c. Place the top cover and secure with screws.
Note: 1 Screws each from left and right:* M3 3.3
2
Top cove screws:* M3 6
d. Apply the corresponding product model label to the Front-End top cover.
SLOT1 23 4 5 6
C8 N 1
<��3;�
*+��,"������������� ( ( 6 ,=� ��� �
SLOT1 SLOT2 SLOT3 SLOT4 SLOT5 SLOT6
-
V
( ( 6 ,
=
+V
24V 10A 24V 10A 5V 36A 12V 20A 48V 5A
e. Apply AC power to the NMP unit, and measure the output voltages to ensure each module is fucntinoing properly. Also, make sure
the output voltage difference between slot 1 and slot 2 is less than 0.2V.
Use two 2-unit parallel copper plates accessory, FAP-009, to connect the +V and -V terminals of slot 1 and slot 2, and use accessory,
and GND pins of CN81 in parallel.
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Frequently asked questions
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