093-58331-109 - BEL POWER SOLUTIONS

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BCD.00247_AB1

 RoHS compliant for all six substances

 High density front-ends 15.2 to 18.3 W/in3

 Wide input voltage range 85 to 264 VAC

 12 V standby voltage, 1A per front-end

 Highly efficient topology reduces operating costs

 I2C interface status and control

 I2C voltage and current limit setting

 Analog output voltage setting

 Overtemperature, output overvoltage, and output

overcurrent protection

 ORing circuits for true redundant operation:

Vo1: ORing FETs; Vo2: ORing Diodes

 Status LEDs: AC OK, DC OK, and

Fan Fail/Overtemperature Fail

The FNP1500/1800 front-ends are power-factor-

corrected (PFC) which (depending on model type)

provide a 12 VDC or 48 VDC (1500 or 1800 watt)

output, and can be used in hot-swap redundant

systems. Their very small dimensions allow

configuration of up to three units in a 1U rack. The

FNP front-ends have a front-mounted AC

receptacle. The highly efficient thermal design with

internal-fan cooling permits their use over wide

temperature ranges and provides very high

reliability.

Status information is provided with front panel

LEDs, logic signals, and via an I2C management

interface. In addition, the I2C bus can enable the

power supply, set high fan speed, adjust the output

voltage, and set the output current limit. The

FNP1500/1800's meet international safety

standards and display the CE-Mark for the

European Low Voltage Directive (LVD).

FNR-3-12G and FNR-3-48G power-shelf solutions

provide rectification, system management, and

power distribution, while maintaining high reliability

and offering flexibility for future expansion. The

power shelves can be configured with up to three

hot-swappable 1500 or 1800-watt AC-DC front-

ends.

 Telecom

 Datacom

 Servers

 Distributed power systems

FNP1500/FNP1800

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BCD.00247_AB

MODEL

INPUT VOLTAGE

VAC

AUTO SELECTED 1

OUTPUT 1

OUTPUT 2

RATED

POWER

W

COMPATIBLE

SHELF 2

V

o1 nom

VDC

I

o1 max

ADC

V

o2 nom

VDC

I

o2 max

ADC

FNP1500-12G3

108 – 264

85 – 105

12

129 @ 11.64V

101.8 @ 11.78A

12

1

1512

1212

FNR-3-12G

FNP1500-48G

105 – 264

85 – 105

48

32.2

25.4

12

1

1512

1212

FNR-3-48G

FNP1800-48G

180 – 264

105 – 180

85 – 105

48

39.2

32.2

25.4

12

1

1812

1512

1212

FNR-3-48G

1 The available output power is automatically adjusted depending on the input voltage.

2 1U standard racks are available from Bel Power Solutions. See the Rack (Power Shelf) section of this data sheet for configurations and

details.

3 Not recommended for new design.

Stress in excess of the absolute maximum ratings may cause performance degradation, adversely affect long-term reliability,

or cause permanent damage to the converter.

PARAMETER

CONDITIONS / DESCRIPTION

MIN

MAX

UNIT

Input Voltage

Continuous

Transient, 60 ms max.

264

300

VAC

Operating Ambient Temperature

V

i min-

V

i max,

I

o nom, cooling by internal fan

@ 100 % load

@ 50 % load

0

50

70

°C

Storage Temperature

Non-Operating

-40

85

°C

Specification is valid for input voltage, load, and temperature ranges, unless otherwise stated.

PARAMETER

CONDITIONS / DESCRIPTION

MIN

NOM

MAX

UNIT

Input Voltage

85

230

264

VAC

Input Frequency

47

50/60

63

Hz

Turn-On Input Voltage

Ramping up

79

85

VAC

Turn-Off Input Voltage

Ramping down

70

78

VAC

Inrush Current Limitation

115/230 VAC acc. ETS 300 132-1

< 100 ms

50

Apk

Hold-Up Time

After last AC line peak ,

V

i = 230 VAC,

P

o nom

20

ms

Power Factor

V

i nom,

I

o nom

0.95

W/VA

Efficiency

V

i = 230 VAC,

I

o nom,

T

C = 25 °C

89 1

90

%

Max Input Current

20

Arms

Input Connector

16A – 20 A / 250 VAC; according to IEC320 C19

1 87% for FNP1500-12

FNP1500/FNP1800

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BCD.00247_AB

Specification is valid for input voltage, load, and temperature ranges, unless otherwise stated.

PARAMETER

CONDITIONS / DESCRIPTION

MIN

NOM

MAX

UNITS

Nominal Output Voltage

I

o = 64.5 A

12

VDC

Output Voltage Set Point Accuracy

V

i = 230 VAC,

I

o1 = 65.5 A,

T

C = 25 °C

(Factory setting)

11.93

-0.42

12

12.05

+0.42

VDC

%

V

o1 nom

Output Voltage Trimming

Adjustable via I2C (

V

o1 set)

Adjustable via Margin pin (R input)

7

6.2

12

13 1

V

o1 set

VDC

Nominal Current Output 1

I

o1 nom @

V

i =108 VAC – 264 VAC,

Po

1.5 kW

I

o1 nom @

V

i = 85 VAC – 105 VAC,

Po

1.2 kW

129.0

101.8

129.0

ADC

Current Limit Output 1

I

o1 max @

V

i = 108 VAC – 264 VAC droop hiccup

I

o1 max @

V

i = 85 VAC – 105 VAC droop hiccup

147.4

120.2

ADC

Nominal Current Output 2

I

o2 nom @ Vi = 85 VAC – 265 VAC,

P

o 12 W

1.0

ADC

Current Limit Output 2

I

o2 max @

V

i = 85 VAC – 265 VAC

1.5

ADC

Static Line Regulation Output 1

V

i min -

V

i max, 50 %

I

o nom, Ta = 25 °C

-0.5

0.5

%

V

o nom

Static Load Regulation Output 1

(Droop Characteristic)

V

i = 230 V, 5 - 100 %

I

o nom

Full load to no load [0..129 A] at

V

o set = 12V

dVo1 over the setting range [7 to 13V]

11.64

-0.36

- 5.58

12

12.36

+0.36

mV/A

VDC

Static Load Regulation Output 2

(Droop Characteristic)

Full load to no load @ Vi = 85 VAC – 265 VAC

0.4

VDC

Dynamic Load Regulation

Load change 50 % <─> 100 %

Io nom

, dIo/dt =1A/s

Voltage deviation (droop + over- or undershoot)

-2

2

%

V

o nom

Max. recovery time to within 1% of

V

o1 nom

400

s

Current Share

Difference in current between two units for

V

o1 above

10 % load.

12.9

ADC

Start-Up Time

Time required for output within regulation after initial

application of AC-input (

V

i nom,

I

o nom)

after removal of inhibit (

V

i nom,

I

o nom)

100

1.5

s

ms

Output Voltage Ripple and Noise

(Filter 10nf/10µf)

V

i nom,

I

o nom, 20 MHz bandwidth

V

o1

V

o2

120

mVpp

Remote Sense

Total compensation for cable losses

500

mV

FNP1500/FNP1800

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BCD.00247_AB

Specification is valid for input voltage, load, and temperature ranges, unless otherwise stated.

PARAMETER

CONDITIONS / DESCRIPTION

MIN

NOM

MAX

UNITS

Nominal output voltage Vo1

I

o = 16.1 A

48

VDC

Nominal output voltage Vo2

I

o = 0.5 A

12

VDC

Output voltage set point accuracy

V

i = 230 VAC,

I

o1 =16.1 A,

T

C = 25 °C

(47.8 - 48.2 VDC)

-0.5

+0.5

%

V

o1 nom

Output voltage trimming

(via I2C or with external resistor)

Adjustable (44.16 to 51.84 VDC)

-8

+8

%

V

o1 nom

Nominal current

output 1

FNP1500-48G

I

o1 nom @

V

i =105 VAC – 264 VAC,

Po

1.5 kW

I

o1 nom @

V

i = 85 VAC – 105 VAC,

Po

1.2 kW

32.2

25.4

ADC

FNP1800-48G

I

o1 nom @

V

i =180 VAC – 264 VAC,

Po

1.8 kW

I

o1 nom @

V

i =105 VAC – 180 VAC,

Po

1.5 kW

I

o1 nom @

V

i = 85 VAC – 105 VAC,

Po

1.2 kW

39.2

32.2

25.4

39.2

ADC

Current limit output 1

FNP1500-48G

I

o1 max @

V

i = 105 VAC – 264 VAC droop hiccup

I

o1 max @

V

i = 85 VAC – 105 VAC droop hiccup

36.8

30

ADC

FNP1800-48G

I

o1 max @

V

i = 180 VAC – 264 VAC droop hiccup

I

o1 max @

V

i = 105 VAC – 180 VAC droop hiccup

I

o1 max @

V

i = 85 VAC – 105 VAC droop hiccup

43.8

36.8

30

ADC

Nominal current output 2

I

o2 nom @ Vi = 85 VAC – 264 VAC,

P

o 12 W

1.0

ADC

Current limit output 2

I

o2 max @

V

i = 85 VAC – 264 VAC

1.5

ADC

Static line regulation output 1

V

i min -

V

i max, 50 %

I

o nom

-0.5

0.5

%

V

o nom

Static load regulation

output 1

(droop characteristic)

FNP1500-48G

V

i = 230 V, 5-100 %

I

o nom

V

o : full load (32.2 ADC) to no load

46.54

90.1

48

49.44

mV/A

VDC

FNP1800-48G

V

i = 230 V, 5-100 %

I

o nom

V

o : full load (32.2 ADC) to no load

45.91

90.1

48

49.44

mV/A

VDC

Static load regulation

output 2 (droop characteristic)

V

i = 230 V, 5-100 %

I

o nom

V

o : full load (32.2 ADC) to no load

0.4

VDC

Dynamic load

regulation

Load change 50 % <--> 100 %

Io nom

, dIo/dt =1 A/s

Voltage deviation (droop + over- or undershoot)

%

V

o nom

FNP1500-48G

-5

5

%

V

o nom

FNP1800-48G

-5.7

5.7

%

V

o nom

All models

Max. recovery time to within 1 % of

V

o1 nom

400

s

Current Share

Difference in current between two units for

V

o1 above

10 % load.

FNP1500-48G

3.2

ADC

FNP1800-48G

3.9

ADC

Start-up time

Time required for output within regulation

after initial application of AC-input (

V

i nom,

I

o nom)

after removal of inhibit (

V

i nom,

I

o nom)

100

1.5

s

ms

Output voltage ripple and noise

(Filter 10 nF/10 µF)

V

i nom,

I

o nom, 20 MHz bandwidth

V

o1

V

o2

480

120

mVpp

Remote sense

Total compensation for cable losses

500

mV

PARAMETER

CONDITIONS/DESCRIPTION

MIN

NOM

MAX

UNIT

Input fuse

Not user accessible

25A, fast blow

Inrush current limitation

With NTCs

Output

No-load -, short circuit - and overload proof

Overvoltage protection latching1

Tracking

Absolute for 48V models

Absolute for 12V models

115

122

59.5

16.85

%

V

o nom

V

Overtemperature protection

Automatic power shutdown at

T

C

95

°C

1 Remove input voltage to reset.

FNP1500/FNP1800

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BCD.00247_AB

Specification is valid for input voltage, load, and temperature ranges, unless otherwise stated.

PARAMETER

CONDITIONS / DESCRIPTION

Status Indication

LEDs: DC OK (green), AC OK (green); fan fail and overtemperature (amber)

I2C Digital Bus

Monitors alarm functions and sets parameters

PS Present Pin

Contact closure to logic ground ( internal pull-down resistor of 1 kΩ)

PS Remote Shutdown / Inhibit Pin

TTL compatible signal, inhibited when open contact, high or at TTL logic “1”.

Signal referenced to logic return (LRTN)

Power Supply OK (I2C)1

AC OK & DC OK & no overcurrent & no overtemperature & fans working

DC Current Fail (I2C)1

Overcurrent on

I

o1

AC Fail / Power Down Warning

(I2C & OC)2

Provides a warning that the input power has failed at least 5 ms before the output falls

out of regulation (<90% Vo1 set).

Open collector signal with 20 mA pull-down capability, referenced to logic return (LRTN).

AC fail will go high or open during power fail condition and will go low when input is within the operating

range.

A Power Fail warning will turn off the green AC OK LED.

DC fail / Output Voltage Fault

(I2C & OC)2

Internal undervoltage and overvoltage supervision of

V

o1.

Open collector signal with 20 mA pull-down capability, referenced to logic return (LRTN).

DC fail will go high or open if

V

o1 is < 90% or > 110% of

V

o1 set, measured in front of the ORing FETs.

A green LED on the front panel indicates normal operation.

The LED will flash if in parallel operation

V

o1 is OK, but the unit is disabled.

Temperature Warning (I2C & OC)2

I2C critical temperature warning: Indicates that the operating temperature has reached [Tshut-down – 10K]

I2C & OC overtemperature warning: Indicates if the unit is in overtemperature shutdown.

Open collector signal with 20 mA pull-down capability, referenced to logic return (LRTN).

The OC-output will go low 100 ms before an overtemperature condition shuts down the unit.

An amber LED on the front panel indicates overtemperature or fan fail.

DC Voltage Monitoring (I2C)1

Monitors the voltage

V

o1 at the output connector.

Accuracy ± 0.45 V over setting range, temperature and load.

DC Current Monitoring (I2C)1

Monitors the output current

I

o1 : Accuracy ± 0.4A over the load range.

DC Voltage Trimming

(I2C or external resistor)1

Output voltage trimming

V

o1: ± 8 % of

V

o set

Setting accuracy over I2C: ± 50mV at Vo nom, ± 150 mV over setting range

Fan speed control (I2C)1

Two fan speed levels automatically set depending on the internal temperature.

The fan speed can be set to full speed or automatic control.

Fan OK (I2C & OC)2

Indicates if the fans are operating or have failed.

Synch. Startup Pin

Overcurrent signal which can be used for synchronous startup of units in parallel or to recover from an

overload condition. (See application note).

1 Detailed I2C information is available from the model’s I2C Manual found on the Bel Power Solutions web site.

2 Provided over the I2C interface and as an open collector signal on the output connector (OC).

PARAMETER

CONDITIONS / DESCRIPTION

MIN

NOM

MAX

UNIT

Altitude

Operating

Non-Operating

10 k

40 k

ASL Ft.

Relative Humidity, Non-Condensing

Operating

10

90

% RH

Storage

5

95

% RH

Temperature Coefficient

0 °C to 70 °C (after 15 min warm-up)

0.02

%/K

Shock

IEC/EN 60068-2-27, 11 ms

40

gpk

Sinusoidal Vibration

IEC/EN 60068-2-6

2-8 Hz

8-200 Hz

200-500 Hz

7.5

2

4

mil

gpk

Random Vibration

10-2000 Hz

6.15

grms

MTBF

Calculated per Bellcore (SR-332, Issue 1):

GB 25 °C

GB 25 °C (FNP1500-12G)

Demonstrated

230

TBD

250

kh

FNP1500/FNP1800

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BCD.00247_AB

Maximum electric strength testing is performed in the factory according to EN 550116, IEC/EN 60950, and UL 60950.

Input-to-output electric strength tests should not be repeated in the field. Bel Power Solutions will not honor any warranty

claims resulting from electric strength field tests.

PARAMETER

CONDITIONS / DESCRIPTION

MIN

NOM

MAX

UNIT

Agency Approvals

UL60950, (UL) CSA 60950 (cUL),

EN 60950(TÜV), CE Mark for LVD

Insulation Safety Rating

Input to case

Input to output

Output to case

Basic

Reinforced

Functional

Electric Strength Test Voltage

Input to case

Input to output

Output to case

Output 1 to output 2

2121

4242 1

500

100

VDC

1 Subassemblies are pre-tested with 4.2 kVDC in accordance with EN50116 and IEC/EN60950.

PARAMETER

DESCRIPTION

CRITERION

Electrostatic Discharge

IEC/EN 61000-4-2, level 4

Performance criterion B

Electromagnetic Field

IEC/EN 61000-4-3, level 3

Performance criterion A

Electrical Fast Transients/Burst

IEC/EN 61000-4-4, level 3

Performance criterion B

Surge

IEC/EN 61000-4-5, level 3

Performance criterion B

Voltage Dips and Interruptions

IEC/EN 61000-4-11

Performance criterion B or better

RF Conducted Immunity

IEC/EN 61000-4-6

10 VAC, AM 80 %, 1 kHz

Performance criterion A

Emissions Conducted

CISPR 22/EN 55022/EN 61204

Class B

Emissions Radiated

CISPR 22/EN 55022/EN 61204

Class A

Harmonics

IEC/EN 61000-3-2

Class B

Voltage Fluctuation and Flicker

IEC/EN 61000-3-3

Pass

Voltage Sag

SEMI F47-0200 (High Line 230V)

Pass

OUTPUT CONNECTOR

DESCRIPTION

LOCATION

TYPE

LOW LEVEL

HIGH LEVEL

VMAX

IMAX

Overtemperature / Fan Fail

U1

OC-output, protected by 16 V Zener diode and a

10 Ω resistor in series, referenced to logic GND

< 0.4 V @ 20 mA

Pull up

15 V

20 mA

AC Fail / Power down warning

U2

OC-output, protected by 16 V Zener diode and a

10 Ω resistor in series, referenced to logic GND

< 0.4 V @ 20 mA

Pull up

15 V

20 mA

Power Supply Present

U3

Resistor (1 kΩ) connected to logic GND

Open

Pull up

10 V

10 mA

DC Fail / Output voltage fault

U4

OC-output, protected by 16 V Zener diode and a

10 Ω resistor in series, referenced to logic GND

< 0.4 V @ 20 mA

Pull up

15 V

20 mA

Internal ground

U5

Internal ground (Vo1– line before the output filter).

Do not connect the internal grounds in systems

with several units.

ADDR0, I2C address bus

T1

DIP switch or wire to internal ground,

Internally pull up to 5V (10 kΩ).

Switch closed

Switch open

5V

ADDR1, I2C address bus

T2

DIP switch or wire to internal ground,

Internally pull up to 5V (10 kΩ).

Switch closed

Switch open

5V

ADDR2, I2C address bus

T3

DIP switch or wire to internal ground,

Internally pull up to 5V (10 kΩ).

Switch closed

Switch open

5V

ADDR3, I2C address bus

T4

DIP switch or wire to internal ground,

Internally pull up to 5V (10 kΩ).

Switch closed

Switch open

5V

ADDR4, I2C address bus

T5

DIP switch or wire to internal ground,

Internally pull up to 5V (10 kΩ).

Switch closed

Switch open

5V

FNP1500/FNP1800

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BCD.00247_AB

DATA, I2C data line

S1

I2C compatible signal

referenced to logic GND

5 V or 3.3 V logic

CLOCK, I2C clock line

S2

I2C compatible signal

referenced to logic GND

5 V or 3.3 V logic

V

o2 + output

S3

Auxiliary power pin, insulated from main output

V

o2 – output

S4

Auxiliary ground pin, insulated from main output

Logic ground

S5

Internally connected over 10 Ω to Auxiliary GND.

Wire separately form Auxiliary - and main output

GND to minimize noise on signals and I2C.

Leave open if not used.

Output inhibit

R1

PS active when pulled low (DC-DC stage off when

left open) Referenced to logic GND

< 0.8 V

> 2.0 V

10 V

3.5 mA

V sense +

R2

Open or connected to

V

o1+ at the load

(Internally connected to

V

o1+ over 100 Ω)

dU < 3 Vpp

30 mA

V sense -

R3

Open or connected to

V

o1- at the load

(Internally connected to

V

o1- over 100 Ω)

dU < 3 Vpp

30 mA

12V model

Output margin

48V models

R4

Open or connected over resistor to internal ground.

Do not connect the margin pins in

systems with several units.

3 VDC

R4

Open or connected to internal ground

(+8 %

V

o1) or

V

sense+ (-8 %

V

o1)

Do not connect the margin pins in

systems with several units.

60 VDC

12V model

Synch. startup

48V models

R5

Open or connected to synch startup circuit,

referenced to Vo1 - at the output connector

12V

3mA

R5

Open or connected to synch startup circuit,

referenced to Vo1 - at the output connector

12V

2mA

V

o1 + output

12V model

P2, P4, P6,

P8, P10, P12

Main output + pins

V

o1 – output

12V model

P1, P3, P5,

P7, P9, P11

Main output – pins

V

o1 + output

48V models

P2, P4, P6

Main output + pins

V

o1 – output

48V models

P1, P3, P5

Main output – pins

CONDITION

POWER FAIL

(AC OK)

OUTPUT GOOD

(DC OK)

FAN FAIL AND

OVER - TEMPERATURE

Normal Operation

Green

OFF

Power Supply is inhibited

Green

OFF

Amber

Input AC is low

OFF

Amber

Input AC is low or missing

OFF

Amber/OFF

Over-temperature

Green

OFF

Amber

Output overload (In regulation)

Green

OFF

Output Overloaded (Out of Regulation)

Green

OFF

Fan Fault (No overtemperature shutdown)

Green

Amber

Fan Fault (With overtemperature shutdown)

Green

OFF

Amber

Power Supply Failed

OFF

OFF/ Amber

AC OK

DC OK

Fan fail / OT

Enable

Switch

FNP1500/FNP1800

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BCD.00247_AB

Mechanical Data (H x W x D):

5.6” (141.2mm) x 1.6” (40.5mm) x 11” (279.4mm)

FNP1500/1800 12V Model Output Connector Descriptions

Rear View

Female Connector: FCI (51732-026 LF)

Mates with:

90° output connector type: Part No. FCI (manufacturer): 51762-11202000AA LF

180° output connector type: Part No. FCI (manufacturer): 51742-11202000AA LF

Locate information on availability of FCI connectors at http://www.stkcheck.com/evs/fcielectronics/fcisearch.asp

Connector drawings available at: http://portal.fciconnect.com/portal/page/portal/FcicntPublic/DocSrchCustDraw

IEC AC power cord with C19 connector VDE 16A: Interpower Components Ltd. 70009110250

IEC AC power cord with C19 connector UL 20A: Interpower Components Ltd. 70025110250

FNP1500/FNP1800

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BCD.00247_AB

Mechanical Data (H x W x D):

5.6” (141.2mm) x 1.6” (40.5mm) x 11” (279.4mm)

FNP1500/1800 48V Model Output Connector Descriptions

Rear View

Female Connector: FCI (51732-020 LF)

Mates with:

90° output connector type: Part No. FCI (manufacturer): 51762-10602000AA LF;

Bel Power Solutions Part No.: ZES258-G

180° output connector type: Part No. FCI (manufacturer): 51742-10602000AA LF

Locate information on availability of FCI connectors at http://www.stkcheck.com/evs/fcielectronics/fcisearch.asp

Connector drawings available at: http://portal.fciconnect.com/portal/page/portal/FcicntPublic/DocSrchCustDraw

IEC AC power cord with C19 connector VDE 16A: Interpower Components Ltd. 70009110250

IEC AC power cord with C19 connector UL 20A: Interpower Components Ltd. 70025110250

FNP1500/FNP1800

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BCD.00247_AB

For parallel use in minimal configuration systems, only the inhibit pins must be shorted to logic GND. All other pins can be

left open. The power supplies will share the output current automatically (droop current share).

For parallel applications without I2C bus, but the use of all other features, it is recommended to connect all logic GND’s on a

backplane together, to connect all Vo2 -, all V o2 + and to leave the internal GND’s open.

The sense wires can be left open or connected to a common load point, the synch-start pin can be left open or connected to

a synch-start circuit, the inhibit pins can be connected together or used individually. All I2C signals (T1-T5, S1, and S2) can

be left open.

Use of a small foil capacitor > 3µF directly at the power outputs of each unit is recommended in order to prevent voltage

drops at the hot plug. For additional information on paralleling see the following Rack (Power Shelf) section.

To achieve best cooling results sufficient airflow through the unit must be ensured. Do not block or obstruct the airflow at

the rear of the unit by placing large components directly at the output connector.

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Each rack (power shelf) is 1U high with backplane and designed for up to three front-end models in parallel or in n+1 operation.

Each power shelf has:

 Massive copper bus bars for low-loss current distribution.

 Output terminals with two M4-screws on each power tab.

 Two fast-on contacts for system earthing.

 Address coding over five pole DIP switch on each unit, 37-pin D-Sub connector with I2C-lines, monitoring signals and

support functions.

 Provides a start-up synchronization circuit and EMV filters.

FNR-3-12G and FNR-3-48G Power Shelf Front View

Overall Mechanical Dimensions (W x H x D): 17.7” (449.6 mm) x 1.7” (43.1 mm) x 13” (330.2 mm)

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LOCATION

DESCRIPTION

A

5-Bit DIP switch for I2C addressing of PSU 1

B

Earth connection

C

Earth connection

D

Earth connection

E

Output 1 minus

F

Output 1 plus

G

5-Bit DIP switch for I2C addressing of PSU 2

H

37-pin SUB-D connector, controlling and auxiliary power (output 2)

I

5-Bit DIP switch for I2C addressing of PSU 3

OUTPUT CONNECTOR DESCRIPTION

LOCATION

TYPE

LOW LEVEL

HIGH LEVEL

V MAX

I MAX

Overtemperature / Fan Fail PSU1

1

OC-output, protected by 16 V Zener diode

and a 10 Ω resistor in series, referenced to logic GND

<0.4 V @ 20 mA

Pull up

15 V

20 mA

Power Supply Present PSU 1

2

Resistor (1 kΩ) connected to logic GND

Open

Pull up

10 V

10 mA

Power Supply Present PSU 2

3

Resistor (1 kΩ) connected to logic GND

Open

Pull up

10 V

10 mA

Open

4

Overtemperature / Fan Fail PSU 3

5

OC-output, protected by 16 V Zener diode

and a 10 Ω resistor in series, referenced to logic GND

<0.4 V @ 20 mA

Pull up

15 V

20 mA

AC Fail / Power down warning PSU 3

6

OC-output, protected by 16 V Zener diode

and a 10 Ω resistor in series, referenced to logic GND

<0.4 V @ 20 mA

Pull up

15 V

20 mA

Power Supply Present PSU 3

7

Resistor (1 kΩ) connected to logic GND

Open

Pull up

10 V

10 mA

DC Fail / Output voltage fault PSU 3

8

OC-output, protected by 16 V Zener diode

and a 10 Ω resistor in series, referenced to logic GND

<0.4 V @ 20 mA

Pull up

15 V

20 mA

Overtemperature / Fan Fail PSU 2

9

OC-output, protected by 16 V Zener diode

and a 10 Ω resistor in series, referenced to logic GND

<0.4 V @ 20 mA

Pull up

15 V

20 mA

Synch._Start_A

10

Sync_start_A , Active high

The signals of several racks can be connected

together in such a way that all supplies will be

inhibited until the last supply has recovered from its

overcurrent condition, referenced to logic GND

<7V off

< 9V

15V

10mA

Open

11

A

B

C

D

E

F

G

H

I

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Output inhibit

PSU 1-3

12

Active low (DC-DC stage off when pin is open or on

high potential)

Referenced to logic GND

<0.8 V

>2.0 V

10 V

3.5 mA

V sense +

13

Open or connected to

V

o1+ at the load

Internally (PSU) connected to

V

o1+ over 100 Ω

dU < 3 Vpp

30 mA

V sense -

14

Open or connected to

V

o1- at the load

Internally (PSU) connected to

V

o1- over 100 Ω

dU < 3 Vpp

30 mA

Open

15

NC

16

NC

17

NC

18

NC

19

AC Fail / Power-down warning PSU 1

20

OC-output, protected by 16 V Zener diode

and a 10 Ω resistor in series, referenced to logic GND

<0.4 V @ 20 mA

Pull up

15 V

20 mA

DC Fail / Output voltage fault PSU 1

21

OC-output, protected by 16 V Zener diode

and a 10 Ω resistor in series, referenced to logic GND

<0.4 V @ 20 mA

Pull up

15 V

20 mA

AC Fail / Power-down warning PSU 2

22

OC-output, protected by 16 V Zener diode

and a 10 Ω resistor in series, referenced to logic GND

<0.4 V @ 20 mA

Pull up

15 V

20 mA

DC Fail / Output voltage fault PSU 2

23

OC-output, protected by 16 V Zener diode

and a 10 Ω resistor in series, referenced to logic GND

<0.4 V @ 20 mA

Pull up

15 V

20 mA

DATA, I2C data line

24

I2C compatible signal

referenced to logic GND

5 V or 3.3 V logic

CLOCK, I2C clock line

25

I2C compatible signal

referenced to logic GND

5 V or 3.3 V logic

Auxiliary power +12 V

(Output 2)

26

Vo2+ Aux output, insulated from main output

Auxiliary power ground

(Output 2)

27

Vo2- Aux output, insulated from main output

Logic Gnd

28

Internally connected over 10 Ω to Vo2-, Auxiliary

GND. Wire separately from auxiliary and main output

GND to minimize noise and avoid voltage drops on

signal- and I2C return. Leave open if not used.

Output margin PSU 1

29

Open or connected to

V

sense-

V

sense- (+8 %

V

o1) or

V

sense+ (-8 %

V

o1)

60V

Output margin PSU 2

30

Open or connected to

V

sense-

V

sense- (+8 %

V

o1) or

V

sense+ (-8 %

V

o1)

60V

Output margin PSU 3

31

Open or connected to

V

sense-

V

sense- (+8 %

V

o1) or

V

sense+ (-8 %

V

o1)

60V

NC

32

NC

33

NC

34

NC

35

NC

36

NC

37

Because of hiccup overcurrent protection, when a supply reaches an overcurrent limit, the output voltage will immediately

turn OFF and after a delay turn ON again. In parallel use, all power supplies have to start synchronized because of the

internal hiccup behavior. Otherwise, the supply which has reached overcurrent first will go to hiccup; this will overload the

other supplies, which then will also go to hiccup. When the first supply has recovered from hiccup (hiccup dead time), the

others remain in hiccup. This will immediately drive the first one into hiccup once again. This means that without a start-up

circuit, a system with several power supplies can never recover from an overload condition or start-up into full load.

The following additional circuit, required to reach synchronized startup, is already implemented inside the

FNR-3-12G and FNR-3-48G shelves.

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The following connection between the shelves is required to achieve a parallel operation. The synch-start circuits inside the

shelves inhibit all power supplies until the last one has recovered from its overcurrent condition and then synchronize the

restart of the outputs.

DESCRIPTION

LOCATION, DEFINITION

TYPE

LOW LEVEL

HIGH LEVEL

V MAX

I MAX

Auxiliary power +12 V

(Output 2)

26

Vo2+, Aux output, insulated from main output

Logic ground

28

Logic_GND ,Internally connected over 10 Ω to

Vo2-, ( Auxiliary power ground (Output 2))

Output inhibit_A

PSU 1-3

12

Inhibit_A ,Active low (DC-DC stage off)

Referenced to Logic_GND

<0.8 V

>2.0 V

10 V

3.5 mA

Synch. Startup 1

PSU 1-3

R5

(at PSU)

The synch_start pin is connected to the

overcurrent signal of the PSU1-3. In the case of

an overcurrent shutdown, this signal goes high.

Referenced to Vo1-

<7V off

> 9V

15V

10mA

Synch. Startup_A

Rack FNR-3-12G &

Rack FNR-3-48G 1-N

Pin on the D-Sub connector on the

backplane

10

Sync_start_A , Active high

The signals of several racks can be connected

together in such a way that all supplies will be

inhibited until the last supply has recovered

from its

overcurrent condition.

Referenced to Logic_GND

NOTE: The Sync-Start pins can be wired together only if the power supplies are connected with a minimal voltage drop on power ground

as achieved on a backplane with massive copper bus bars. If there is a less ideal connection, it is recommended to use an opto-coupler for

each unit (IC1, D3, D2).

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BCD.00247_AB

Center Angular Brackets are set in the middle for shelf mounting:

Center Angular Bracket sets can be ordered: Bel Power Solutions part no.: HZZ01222

Note: Each Center Angular Bracket set contains 2 brackets and 8 screws.

Filler for covering empty shelf slots:

Filler can be ordered: Bel Power Solutions part no.: XAK.00043.0

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BCD.00247_AB

Plastic cover set for the bus bars:

Plastic cover set can be ordered: Bel Power Solutions part no.: XEB.00031.0

Note1: Available upon special request.

Note2: Each plastic cover set contains 2 pieces.

The handle has been designed to allow easy plug-in and -out in a rack system. The handle (lever) fits into a counter piece

(fulcrum) which is fixed to the bottom of the rack. During the plug, the fulcrum holds the unit down and guides it towards the

output connector. The Bel Power Solutions part number of the fulcrum and its associated mounting accessories is:

HZZ01223.

Individual fulcrum sets can be also ordered: Bel Power Solutions part no.: HZZ01223.

Note: Each HZZ01223 set contain 2 fulcrums, 2 supports, and mounting accessories.

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BCD.00247_AB

I2C Management Software: All FNP front-ends can be controlled via Bel Power Solutions GUI-driven I2C Management

software and an I2C-to-USB interface (P/N HZZ02002G). An I2C Programming Manual describes the complete range of

parameters that can be programmed to the FNP1500/1800 front-ends. This manual is available by searching on "FNP1500"

at www.belpowersolutions.com.

NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support systems,

equipment used in hazardous environments, or nuclear control systems.

TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending

on the date manufactured. Specifications are subject to change without notice.

I2C <to>USB

Interface