Fan power interface
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Before you begin
Before connecting any power cables be sure that all circuit breakers which are located
in the external Battery Distribution and Fuse Bay (BDFB) and/or on a Power
Distribution Panel (PDP) are in the
OFF position.
Important! The fan power cables should be connected later (see section “Switching
on and testing supply voltage” (p. 5-3)).
Connector data
The fan power connector which is located on the fan unit is a 9-pin SUB-D male
connector.
Table 4-4 Pin assignment (fan power cable)
Point on Connector Signal Name Color
1 –48 VDC, feed A blue
2nc
3 DC RTN (return), feed A red
4nc
5 –48 VDC, feed B blue
6nc
7 DC RTN (return), feed B red
8 DC common return for feed A+B red
9 GND yellow/green
Cable data
Preferably stranded 20 AWG (0.51 mm
2
) wires with proper insulation should be used.
The total length of the wires between the unit power and the fan power connector must
be less than 2 meters.
Cable connection
The fan power cable must be connected as shown in the figure below.
Figure 4-11 Fan power connector
1
6
5
9
System cabling
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365-312-802R7.2
Issue 4, June 2007
Alcatel-Lucent - Proprietary
See notice on first page
4-13
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