EMERSON NFS110 Service Manual

Embedded Power for
Business-Critical Continuity

NFS110 Medical
Series

Single and
quad output

Special Features

• 7.0 x 4.25 x 1.8 inch package

• Medical, dental and
laboratory applications

• Overvoltage and short circuit
protection

• 110 W with 20 CFM

• UL, VDE and CSA safety
approvals

• EN60601-1 and UL2601
medical approvals

• Available RoHS compliant

• 2 year warranty

Total Power: 80 - 110 W
Input Voltage: 90 - 253 Vac

127 - 357 Vdc

# of Outputs: Single, quad

Safety

VDE0805/EN60601-1/
IEC601/IEC1010
File No. 10401-3336-1049
Licence No. 2874

UL2601 File No. E147937

CSA C22.2 No. 125
File No. LR41062C

Rev. 06.10.08

NFS110 Series

1 of 5

Electrical Specifications

Output

Voltage adjustability +5.1 V o/p on multi’s ±3.0%

5.1 V single output ±3.0%
12 V single output 12-14 V
15 V single output 15-18 V
24 V single output 24-30 V

Line regulation LL to HL, FL ±0.1% max.

All outputs on all units

Overshoot/undershoot At turn-on no lead 0%
Temperature coefficient All outputs ±0.02%/°C
Overvoltage protection Multi o/p 5.1 V only 6.25 V ±0.75 V

5.1 V single 6.25 V ±0.75 V
12 V single 15.75 V ±1.0 V
15 V single 22 V ±1.5 V
24 V single 33 V ±2.5 V

Output power limit Primary power Pin max. 160 W

limited Pout min. 110 W

Short circuit protection Burst mode operation

Input

Input voltage range 90-253 Vac

127-357 Vdc

Input frequency range 47-440 Hz

Input surge current 110 Vac. 50 Hz 17 A

230 Vac. 50 Hz 35 A

Safety ground leakage current 132 Vac 50 μA

264 Vac 100 μA

All specifications are typical at nominal input, full load at
25

°C unless otherwise stated

Rev. 06.10.08

NFS110 Series

2 of 5

Embedded Power for
Business-Critical Continuity

Environmental Specifications

Thermal performance Operating, see curve 0° C to +70 °C

(See notes 9, 10) Non-operating -40 °C to +85 °C

0 °C to 50 °C amb. convection cooled 80 W

+50 °C to +70 °C,
amb. convection cooled

Derate 2 W/°C

0 °C to +50 °C, 20 CFM forced air 110 W

+50 °C to +70 °C, 20CFM forced air Derate 2.75 W/°C

Peak, 0 °C to +50 °C, max. 60 seconds 110W

Relative humidity Non-condensing 5% to 95% RH

Altitude Operating 10,000 feet max.

Non-operating 40,000 feet max.

Vibration (See Note 11) 5-500 Hz 2.4 G rms peak

EMC Characteristics

Conducted emissions EN55022, FCC part 15 Level A
Radiated emissions EN55022, FCC part 15 Level A
ESD air EN61000-4-2, level 3 Perf. criteria 1
ESD contact EN61000-4-2, level 4 Perf. criteria 1
Surge EN61000-4-3, level 3 Perf. criteria 1
Fast transients EN61000-4-4, level 3 Perf. criteria 1
Radiated immunity EN61000-4-5, level 3 Perf. criteria 2
Conducted immunity EN61000-4-6, level 3 Perf. criteria 2

General Specifications

Hold-up time 110 Vac @ 80 W 35 ms

110 Vac @ 110 W 17 ms
230 Vac @ 80 W 140 ms
230 Vac @ 110 W 100 ms

Efficiency Multiple outputs 70% typical

+5.1 V single 70% typical
12 V and 15 V singles 72% typical
24 V single 75% typical

Isolation voltage Input/output 4000 Vac

Input/chassis 1500 Vac

Approvals and standards
(see note 12)

VDE0750, IEC60601,
IEC1010, UL2601
CSA C22.2 No. 125

Weight Singles 550 g (19.4 oz)

Multiple outputs 600 g (21.2 oz)

MTBF (@25º C) MIL-HDBK-217E 125,000 hours min.

Rev. 06.10.08

NFS110 Series

3 of 5

Embedded Power for
Business-Critical Continuity

Notes

1 Convection cooled, 80 W maximum.
2 Peak outputs lasting less than 60 seconds with duty cycle less than 10%. Total

peak power must not exceed 110 W.

3 Forced air, 20 CFM at 1 atmosphere, 110 W maximum.
4 Figure is peak-to-peak. Output ripple is measured across a 50 MHz bandwidth

using a 12 inch twisted pair terminated with a 47 μF capacitor.

5 Total regulation is defined at the static output regulation at 25 °C, including

initial tolerance, line voltage within stated limits and output voltages adjusted
to their factory settings. Also for NFS110-7902PJ, for 24 V output stated
regulation I

A

/ IB² 5. This output will maintain ±5.0% regulation if

I

A

² 5 A, where IA= +5.1 V output current and IB= +24 V output current.

6 Single output models have floating outputs which may be referenced as either

positive or negative. Higher voltage supplies, may be adjusted over a wide
output voltage range, as long as the total output power does not exceed 80
Watts (natural convection) or 110 Watts (forced air).

7 Power fail detect not available on single output models.
8 Derating curve is application specific for ambient temperatures > 50 °C, for

optimum reliability no part of the heatsink should exceed 90 °C and no
semiconductor case temperature should exceed 100 °C.

9 Caution: Allow a minimum of 1 second after disconnecting the power when

making thermal measurements.

10 The user should read the PSU installation instructions in conjunction with the

relevant national safety regulations in order to ensure compliance.

11 Three orthogonal axes, random vibration, 10 minute test for each axis.
12 This product is only for inclusion by professional installers within other

equipment and must not be operated as a stand alone product.

13 The ‘J’ suffix indicates that these parts are Pb-free (RoHS 6/6) compliant. TSE

RoHS 5/6 (non Pb-free) compliant versions may be available on special request,
please contact your local sales representative for details.

14 NOTICE: Some models do not support all options. Please contact your local

Emerson Network Power representative or use the on-line model number
search tool at http://www.powerconversion.com to find a suitable alternative.

TRANSIENT RESPONSE

NFS110-7901PJ +5.1 V (7.5-10 A) 150 mV peak,

1 ms recovery

+12 V (2.5-5 A) 100 mV peak,

0.5 ms recovery

-12 V (0.5-1 A) 100 mV peak,

0.5 ms recovery

-5 V (0.5-1 A) 100 mV peak,

0.5 ms recovery

NFS110-7902PJ +5.1 V (7.5-10 A) 150 mV peak,

1 ms recovery

+12 V (2.5-5 A) 100 mV peak,

0.5 ms recovery

-12 V (0.5-1 A) 100 mV peak,

0.5 ms recovery

24 V (1.5-3 A) 300 mV peak,

1 ms recovery

NFS110-7904PJ +5.1 V (7.5-10 A) 150 mV peak,

1 ms recovery

+15 V (2.5-5 A) 100 mV peak,

0.5 ms recovery

-15 V (0.5-1 A) 100 mV peak,

0.5 ms recovery

-5 V (0.5-1 A) 100 mV peak,

0.5 ms recovery

NFS110-7905J +5.1 V (10-20 A) 250 mV peak,

1 ms recovery

NFS110-7912J +12 V (4.5-9 A) 360 mV peak,

1 ms recovery

NFS110-7915J +15 V (3.65-7.3 A) 450 mV peak,

1 ms recovery

NFS110-7924J +24 V (2.25-4.5 A) 720 mV peak,

Ordering Information

Output
Voltage

Output Currents

Ripple

(4)

Tot al

Regulation

(5)

Model Numbers

(13, 14, F)

Max

(1)

Peak

(2)

Fan

(3)

+5.1 V 8 A 20 A 10 A 50 mV ±2.0% NFS110-7901PJ

+12 V 4.5 A 9 A 5 A 120 mV ±3.0%

–12 V 0.5 A 1.5 A 1 A 120 mV ±3.0%

–5 V 0.5 A 1.5 A 1 A 50 mV ±3.0%

+5.1 V (IA) 8 A 20 A 10 A 50 mV ±2.0% NFS110-7902PJ

+24 V (IB)

(6)

3.5 A 4.5 A 4.5 A 240 mV +10/–5.0%

+12 V 4.5 A 9 A 5 A 120 mV ±3.0%

–12 V 0.5 A 1.5 A 1 A 120 mV ±3.0%

+5.1 V 8 A 20 A 10 A 50 mV ±2.0% NFS110-7904PJ

+15 V 4 A 7.5 A 5 A 150 mV ±4.0%

–15 V 0.5 A 1.5 A 1 A 150 mV ±3.0%

–5 V 0.5 A 1.5 A 1 A 50 mV ±3.0%

12 V 7 A 9 A 9 A 120 mV ±2.0% NFS110-7912J

(7,8)

15 V 5 A 7.3 A 7.3 A 150 mV ±2.0% NFS110-7915J

(7,8)

24 V 3.5 A 4.5 A 4.5 A 240 mV ±2.0% NFS110-7924J

(7,8)

Rev. 06.10.08

NFS110 Series

4 of 5

Embedded Power for
Business-Critical Continuity

AC (J1) mating connector

Molex 09-50-3051 or Molex 09-91-0500 mating connector with 2478
or equivalent crimp terminals.

DC (J2) mating connector

Molex 09-50-3131 or Molex 09-91-1300 mating connector with 2478
or equivalent crimp terminals.

ALL DIMENSIONS IN INCHES (mm)

Optional
Power Fail
Detect Circuit
(Key = Pin 2)

Pin 1

6-32 UNC
(4PL)

PIN 1

1.00 0.005
(25.4)

Voltage Adjust

J2

J1

F1

L1

T1

C6

PIN 1

0.156
DIA. HOLE
(4PL)

5A, 250 VAC

0.475

0.010

(12.07)

1.55 0.005
(39.37)

3.35 0.015 (85.09)

1.80 (45.72) MAX

0.050 0.020
(1.27)

4.250

0.020

(107.95)

3.750

0.005

(95.25)

0.250

0.010
(6.35)

0.250

0.010

(6.35)

6.50 0.005 (165.1)

7.00 0.020 (177.8)

T1

Power fail detect signal (Note 8)

50ms ≤ T1 ≤ 200ms
T2 will vary with line and load
T3 ≥ 3ms
Pout: 110W
PFD output is an open collector which
will sink ≤ 40mA in the low state.

N/C = no connection.

Pin Connections

J1 -7901PJ -7902PJ -7904PJ SINGLES

Pin 1 AC Ground AC Ground AC Ground AC Ground

Pin 2 AC Neutral AC Neutral AC Neutral AC Neutral

Pin 3 AC Line AC Line AC Line AC Line

J2

Pin 1 +5.1 V +5.1 V +5.1 V V

out

Pin 2 +5.1 V +5.1 V +5.1 V V

out

Pin 3 +5.1 V +5.1 V +5.1 V V

out

Pin 4 Return Return Return Return

Pin 5 Return Return Return Return

Pin 6 Return Return Return Return

Pin 7 Return Return Return Return

Pin 8 +12 V +12 V +15 V V

out

Pin 9 +12 V +12 V +15 V V

out

Pin 10 PFD PFD PFD N/C

Pin 11 -12 V -12 V -15 V N/C

Pin 12 Removed for Key

Pin 13 -5 V +24 V -5 V N/C

Mechanical Notes

A Metallic or non-metallic stand-offs (maximum diameter 5.4mm) can be used in

all four mounting holes without effecting safety approval.

B The ground pad of the mounting hole near J1, allows system grounding

through a metal stand-off to the system chassis.

C The heat sink is grounded, and allows system grounding by mechanical

connection to the system chassis.

D The supply must be mechanically supported using the PCB mounting holes and

may be additionally supported by the heatsink mounting holes.

E It is always advisable to attach the power supply heat sink to another thermal

dissipator (such as a chassis or finned heatsink etc). The resulting decrease in
heat sink mounted component temperatures will improve power supply
lifetime.

F A standard L-bracket and cover is available for mounting which contains all

screws, connectors and necessary mounting hardware. The kit is available,
order part number “NFS110CJ” .

OPTIONAL POWER FAIL DETECT TIMING DIAGRAM

AC INPUT

4.75V

5V OUTPUT

PFD SIGNAL

0-0.4 MAX

LOW

HIGH

T1

4.75V

3.5V MIN

T3

T2

DERATING CURVE (See Notes 9, 10)

Output Power (Watts)

110W

80W

11W

20 CFM FORCED AIR COOLING

NATURAL

CONVECTION

COOLING

11W MINIMUM LOAD REQUIRED AT 230VAC

0W

0C 10C 20C 30C 40C 50C 60C 70C

55W

40W

Americas

5810 Van Allen Way
Carlsbad, CA 92008
USA
Telephone: [phone]
Facsimile: [phone]

Europe (UK)

Waterfront Business Park
Merry Hill, Dudley
West Midlands, DY5 1LX
United Kingdom
Telephone: [phone]
Facsimile: [phone]

Asia (HK)

14/F, Lu Plaza
2 Wing Yip Street
Kwun Tong, Kowloon
Hong Kong
Telephone: [phone]
Facsimile: [phone]

For global contact, visit:

www.powerconversion.com
technicalsupport@
powerconversion.com

While every precaution has been taken to ensure
accuracy and completeness in this literature, Emerson
Network Power assumes no responsibility, and disclaims
all liability for damages resulting from use of this
information or for any errors or omissions.

Embedded Power for
Business-Critical Continuity

Rev. 06.10.08

NFS110 Series

5 of 5

Emerson Network Power and the Emerson
Network Power logo are trademarks and
service marks of Emerson Electric Co.
©2008 Emerson Electric Co.

EmersonNetworkPower. com

Embedded Computing

Embedded Power

Monitoring

Outside Plant

Power Switching & Controls
Precision Cooling
Racks & Integrated Cabinets

Services

Surge Protection

Emerson Network Power.

The global leader in enabling
business-critical continuity.

AC Power

Connectivity

DC Power