FEB 12, 2007 revised to FEB 26, 2007

Page 4 of 13

www.power-one.com

FNP600/850/1000 AC-DC Front-Ends

& FNR-5-12/FNR-5-48 Power Shelves Data Sheet

Control and Monitoring

Parameter

Conditions/Description

Min.

Nom.

Max.

Units

DC OK

TTL open-collector signal with active

20-mA pull-down. Represents percent

of output voltage where signal is OK.

Below this voltage, a signal high

condition indicates an output which is

out of tolerance. Green DC OK LED on

front panel indicates normal operation.

1

90

110

%

Input Power Fail Warning

TTL open-collector signal with active

20-mA pull-down. High indicates an

input power fail. Power Fail Warning

will turn OFF green AC OK LED.

Represents the time after warning

signal before Vout drops to 95% due to

loss of input power.

1

5

ms

Power Supply Present

Signal

Resistance of connection to logic

ground which allows user to determine

if power supply is present.

1

10

Ω

FNP600-12:

Main output only. Difference in current

between two supplies at >10% load

value.

5

FNP850-12:

7

FNP600-48:

2

Current Share

FNP1000-48:

2

A

Remote Sense

Total voltage compensation for cable

losses with respect to the main output.

0.5

V

Output Enable

Open circuit or logic high from ENA pin

to Vo1 RTN shuts OFF Vo1; Vaux and

fan are operational. Logic low (2 mA

sink capability) or jumper will turn ON

Vo1 within 100 ms. Open circuit

voltage on enable pin is 3.3 VDC.

Externally applied voltage to the enable

pin should NOT exceed 7 VDC. Signal

is referred to as Logic Return (LRTN).

I

Static

Includes static information such as: part number and revision level, output rating, serial number, date code,

and manufacturing location.

Status

(Logic 1 or 0)

Power Supply OK.

AC Input OK.

DC Output OK.

Power Supply Seated.

Overtemperature.

Overcurrent.

Fan OK.

Real-Time Monitoring

Output voltage (main output) 0.1V LSD.

Output current (main output) 0.1A LSD.

Time in service.

Control Signals

Enable for main output.

Output voltage to: (0.01V resolution on 12V supplies;

0.05V resolution on all 48V supplies).

Fan speed level.