MEAN WELL NMD-240 is a dual-output power module for NMP650 and NMP1K2 modular power systems. Configuration code D provides two 30 V outputs, each adjustable from 3 to 30 V with a 0–5 A load range and 150 W maximum channel power. The two channels together are limited to 240 W. Each output has its own local ON/OFF, DC OK signal and adjustment; a compatible NMP front end is required.
Product Datasheet
Download MEAN WELL NMD-240 Datasheet (PDF)
The NMD-240 section is on PDF pages 1, 2, 3, 4, 6, 8, 12, 13, 14, 16. Refer to the complete mechanical drawings and notes when planning installation.
Dual-Output Ratings and Combined Load
| Configuration code |
D. |
| V1 rated output voltage |
30 V; independently adjustable from 3 to 30 V using VR61. |
| V1 rated output current, maximum |
5 A; load range 0–5 A. |
| V1 rated output power, maximum |
150 W. |
| V2 rated output voltage |
30 V; independently adjustable from 3 to 30 V using VR71. |
| V2 rated output current, maximum |
5 A; load range 0–5 A. |
| V2 rated output power, maximum |
150 W. |
| Combined output power, maximum |
240 W for V1 + V2; the two 150 W channel limits cannot be used simultaneously. |
| Ripple and noise, maximum |
V1: 250 mVp-p; V2: 250 mVp-p. |
| Voltage tolerance |
V1 and V2: ±2.0% maximum; includes set-up, line and load regulation. |
| Line regulation |
V1 and V2: ±0.5%. |
| Load regulation |
V1 and V2: ±1.0%. |
At every voltage setting, respect each channel's voltage, current and power limits, the 240 W combined limit and the front-end total. Use the separate below-7 V and at-least-7 V current derating curves.
NMP System Integration
| Compatible front ends |
NMP650: four module slots and 650 W maximum total; NMP1K2: six slots and 1200 W maximum total. |
| Mains connection |
The NMP front end accepts 90–264 VAC or 120–370 VDC; AC frequency 47–63 Hz. Connect this output module through the compatible front end, not directly to mains. |
| Cooling and format |
The NMP system uses a 1U low-profile chassis and temperature-controlled fans. Preserve the host airflow and apply both input and temperature derating. |
| Global and local controls |
Global control acts on the complete NMP supply; local controls act on module outputs. The global and local ON/OFF polarities are different. |
The assembled power supply, output modules, mating parts and selected interconnections must match the required configuration. The sum of the connected module loads must remain within the front-end power limit as well as each module and channel limit.
The catalogue lists a five-year warranty for the NMP series. Medical diagnostic equipment, test and measurement, communications and automation are application examples; suitability depends on the complete equipment design.
Front-End Auxiliary Supply and Global Signals
On the NMP front end, CN32 pins 1/2 provide +5V-AUX-P at 1.5 A maximum for NMP650 or 2 A maximum for NMP1K2; pins 3/4 are GND-P. The auxiliary tolerance is ±10% and ripple is 50 mVp-p maximum.
CN32 pin 6 is RC1: short to GND-P for global ON, open for OFF. When global remote control is unused, fit the shorting connector supplied with the NMP power supply, linking pin 6 to pin 3; without that link the supply has no output. This is a front-end accessory, not a separate module auxiliary-output rating.
CN32 pin 5 is the T-Alarm TTL output, referenced to pins 3/4, with 10 mA maximum source current. Normal temperature gives 0–0.5 V. Above the alarm threshold it gives 4.5–5.5 V while output remains on; above the safe-temperature limit the output turns off. The temperature-controlled fan and its alarm function belong to the front end.
Independent Local Controls, Indicators and Protection
| V1 local remote ON/OFF |
CN82 pin 3 (RC2) to pin 1 (GND1 / -V1): open = ON; short = OFF. |
| V2 local remote ON/OFF |
CN82 pin 4 (RC3) to pin 2 (GND2 / -V2): open = ON; short = OFF. |
| V1 DC OK |
CN82 pin 5 relative to pin 1: 4.5–5.5 V when ON, 0–0.5 V when OFF; source 10 mA maximum. |
| V2 DC OK |
CN82 pin 6 relative to pin 2: 4.5–5.5 V when ON, 0–0.5 V when OFF; source 10 mA maximum. |
| Local adjustments and LEDs |
V1: VR61 and LD61; V2: VR71 and LD71. |
| Overload protection |
V1 and V2: 105–125% rated output power; constant-current limiting. |
| Overvoltage protection |
V1 and V2: 31–37 V; output shutdown, re-power to recover. |
| Overtemperature protection |
V1 and V2: output shutdown, automatic recovery after temperature falls. |
NMD-240 uses independent local output adjustment, ON/OFF and DC OK for each channel. The NMS-specific external PV/PC programming, remote-sense, current-sharing and 5 V / 10 mA Vcc2 functions do not apply to this dual-output module.
Timing and Measurement Conditions
| Set-up / rise time |
1500 / 60 ms at full load. |
| Typical hold-up time |
16 ms at 230 VAC and 75% of the specified assembled-system load; 10 ms at 230 VAC and full specified assembled-system load. |
| General test conditions |
230 VAC input, rated load and 25°C ambient unless a parameter states otherwise. |
| Ripple measurement |
20 MHz bandwidth, 12-inch twisted pair, with 0.1 µF and 47 µF capacitors in parallel at the termination. |
| Tolerance definition |
Includes set-up tolerance, line regulation and load regulation. |
The hold-up values apply to the catalogue's reference combinations: NMP650 with one each of C/E/H/K at 650 W maximum, or NMP1K2 with C×1, E×1, H×2 and K×2 at 1200 W maximum. The front-end efficiency and hold-up performance depend on the installed module combination.
Temperature, Input Derating and Environment
| Input-voltage load curve |
At 60 Hz: 70% load at 90 VAC, rising to 100% at 110 VAC; the full-load plateau extends to 264 VAC. Apply this together with the temperature curve. |
| Operating humidity |
20–90% RH, non-condensing. |
| Storage conditions |
-40°C to +85°C; 10–95% RH, non-condensing. |
| Temperature coefficient |
±0.03%/°C from 0°C to +50°C. |
| Vibration |
10–500 Hz, 2 G, 10-minute cycle; 60 minutes each along X, Y and Z. |
For NMD-240 outputs set to at least 7 V, the horizontal-installation current curve permits 100% from -30°C to +50°C at 230 VAC, or from -25°C to +50°C at 115 VAC. For outputs below 7 V, the plotted 100% current range begins at -15°C and ends at +50°C. Both voltage regions derate to 60% at +70°C with 230 VAC, or 50% at +70°C with 115 VAC. Apply the curve to each channel and keep combined power within 240 W.
Above 2000 m, the catalogue requires an ambient-temperature reduction of 5°C per 1000 m for fan-cooled models, or 3.5°C per 1000 m for fanless models. Use the fan-cooled requirement for the NMP installation. This thermal note does not establish an additional maximum operating altitude.
Dimensions, Weight and Output Connections
| Module dimensions, L × W × H |
118.5 × 37.9 × 18 mm, as listed in the specification table; allow the terminal and connector clearances shown on physical page 12. |
| Typical single-module weight |
152 g (0.152 kg). |
| Packing reference |
72 modules / 11.9 kg / 1.04 CUFT; this is the carton quantity and mass. |
| Output terminal order |
From top to bottom in the page 12 front view: +V1 orange, -V1 gray, +V2 orange, -V2 gray. |
| Output conductor range |
20–26 AWG. |
| Wire strip length |
10 mm. |
| Independent channel returns |
GND1 is referenced to -V1; GND2 is referenced to -V2. Use the corresponding reference for each control and status signal. |
CN82 Control Connector
| Module connector |
HRS DF11-10DP-2DS or equivalent. |
| Mating housing |
HRS DF11-10DS or equivalent. |
| Contact series |
HRS DF11-**SC or equivalent, as printed; select the complete contact variant for the intended conductor and connector. |
| Pin 1: GND1 |
V1 signal reference, -V1. |
| Pin 2: GND2 |
V2 signal reference, -V2. |
| Pin 3: RC2 |
V1: open to pin 1 gives ON; short gives OFF. |
| Pin 4: RC3 |
V2: open to pin 2 gives ON; short gives OFF. |
| Pin 5: DC OK1 |
V1 ON: 4.5–5.5 V; OFF: 0–0.5 V; source 10 mA maximum, referenced to pin 1. |
| Pin 6: DC OK2 |
V2 ON: 4.5–5.5 V; OFF: 0–0.5 V; source 10 mA maximum, referenced to pin 2. |
| Pin 7: NC |
No connection. |
| Pin 8: NC |
No connection. |
| Pin 9: NC |
No connection. |
| Pin 10: NC |
No connection. |
The mating housing and contact references identify compatible connection parts; they are not a statement that an additional mating cable or contact set is included with this module.
Configuration and Connection Accessories
| Unused output slot |
BLANK-NMS240 is the catalogue's blank-slot assembly; select it for unused NMP module positions and confirm supply details with MEAN WELL. |
| Front-end CN32 connector |
HRS DF11-6DP-2DS or equivalent; mating housing HRS DF11-6DS or equivalent; contact reference HRS DF11-**SC or equivalent. |
Select the required module configuration with the compatible NMP650 or NMP1K2 front end. The catalogue's configuration examples describe assembled systems and do not mean that every module, blank-slot assembly or connection accessory accompanies this individual module.
Parallel or series connection accessories are supplied by selection through MEAN WELL. Specify the required configuration and obtain its compatible connection arrangement before installation.
Safety and Medical Equipment Integration
The NMD module is integrated into the NMP system covered by the following catalogue safety information. The catalogue lists IEC 60601-1:2005+A1; TUV BS EN/EN 60601-1:2006+A1+A12+A2; ANSI/AAMI ES60601-1:2005+A2; CAN/CSA C22.2 No.60601-1:2014+A2; IEC 62368-1:2014; UL 62368-1, 2nd edition; CSA C22.2 No.62368-1-14, 2nd edition; TUV BS EN/EN 62368-1:2014+A11; and EAC TP TC 004.
For the assembled NMP supply, primary-to-secondary isolation is 2 × MOPP and primary-to-earth isolation is 1 × MOPP. The catalogue gives touch current below 100 µA and earth leakage below 400 µA at 264 VAC, with I/O 4 kVAC, I/FG 2 kVAC and O/FG 0.5 kVAC withstand tests. Insulation resistance is 100 MΩ at 500 VDC, 25°C and 70% RH.
The series is suitable for consideration in BF-type medical applications. These component-level properties do not certify the finished equipment as BF or establish compliance for an assembled medical system; insulation, enclosure, patient connections, leakage and EMC must be assessed in the final equipment.
The NMP catalogue lists EN/BS EN 55032 and 55011 Class B conducted and radiated emissions, EN/BS EN 61000-3-2 Class A harmonics and EN/BS EN 61000-3-3 flicker. Immunity is referenced to EN/BS EN 60601-1-2, EN/BS EN 55035 and SEMI F47. Its test magnitudes include ESD 15 kV air/8 kV contact, RF field 10 V/m, EFT 2 kV, surge 4 kV line-to-FG/2 kV line-to-line, conducted RF 3 V and power-frequency magnetic field 30 A/m; dips include 100% for one period and 30% for 25 periods, with 100% interruption for 250 periods.
The published EMC tests used a 360 × 720 × 1 mm metal plate. The supply is a component for installation in final equipment, whose complete EMC compliance must be reconfirmed.
