FNP1500/1800 Front-Ends
& FNR-3 Power Shelf Data Sheet
SUB-D Output Connector Pinout and Signal Specification
Output Connector
Description
Overtemperature /
Fan Fail PSU1
Power Supply Present
PSU 1
Power Supply Present
PSU 2
Open
Overtemperature /
Fan Fail PSU 3
AC Fail /
Power down warning PSU 3
Power Supply Present
PSU 3
DC Fail /
Output voltage fault PSU 3
Overtemperature /
Fan Fail PSU 2
Pin
Location
1
2
3
4
5
6
7
8
9
Type
OC-output, protected by 16 V Zener diode
and a 10
Ω
resistor in series, referenced to logic GND
Resistor (1 k
Ω
) connected to logic GND
Resistor (1 k
Ω
) connected to logic GND
Low level
High level
<0.4 V @ 20 mA
Pull up
Open
Pull up
Open
Pull up
<0.4 V @ 20 mA
Pull up
<0.4 V @ 20 mA
Pull up
Open
Pull up
<0.4 V @ 20 mA
Pull up
<0.4 V @ 20 mA
Pull up
<7V off
< 9V
V max
I max
15 V
20 mA
10 V
10 mA
10 V
10 mA
15 V
20 mA
15 V
20 mA
10 V
10 mA
15 V
20 mA
15 V
20 mA
15V
10mA
OC-output, protected by 16 V Zener diode
and a 10
Ω
resistor in series, referenced to logic GND
OC-output, protected by 16 V Zener diode
and a 10
Ω
resistor in series, referenced to logic GND
Resistor (1 k
Ω
) connected to logic GND
OC-output, protected by 16 V Zener diode
and a 10
Ω
resistor in series, referenced to logic GND
OC-output, protected by 16 V Zener diode
and a 10
Ω
resistor in series, referenced to logic GND
Sync_start_A , Active high
Synch._Start_A
10
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
Active low (DC-DC stage off when pin is open or on
high potential)
Referenced to logic GND
Open or connected to
V
o1
+ at the load
Internally (PSU) connected to
V
o1
+ over 100
Ω
Open or connected to
V
o1
- at the load
Internally (PSU) connected to
V
o1
- over 100
Ω
Open
Output inhibit
PSU 1-3
V sense +
V sense -
Open
NC
NC
NC
NC
AC Fail/
Power-down warning PSU 1
DC Fail/
Output voltage fault PSU 1
AC Fail/
Power-down warning PSU 2
DC Fail/
Output voltage fault PSU 2
DATA, I C data line
2
11
12
13
14
15
16
17
18
19
20
21
22
23
24
OC-output, protected by 16 V Zener diode
and a 10
Ω
resistor in series, referenced to logic GND
OC-output, protected by 16 V Zener diode
and a 10
Ω
resistor in series, referenced to logic GND
OC-output, protected by 16 V Zener diode
and a 10
Ω
resistor in series, referenced to logic GND
OC-output, protected by 16 V Zener diode
and a 10
Ω
resistor in series, referenced to logic GND
I C compatible signal
referenced to logic GND
2
<0.8 V
>2.0 V
10 V
3.5 mA
dU < 3 V
pp
30 mA
dU < 3 V
pp
30 mA
<0.4 V @ 20 mA
Pull up
<0.4 V @ 20 mA
Pull up
<0.4 V @ 20 mA
Pull up
<0.4 V @ 20 mA
Pull up
5 V or 3.3 V logic
15 V
20 mA
15 V
20 mA
15 V
20 mA
15 V
20 mA
MCD10074 Rev. 1.2, 15-Apr-10
Page 12 of 17
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