SCore Live
SCore Live 23Date printed: 28.02.11
3.5 Primary Power Supply A943.0304
The 200 W primary power supply unit is auto-ranging (100...240 VAC,
50...60 Hz) with integrated power factor correction. A status output signal is
available on the 15-pin D-type front panel socket. The fan unit’s supply can
be taken from this socket as well.
FAN/STATUS Connector (15-pin D-type, female, UNC 4-40 thread)
Pin Signal Pin Signal
1 +24 VDC (fan supply, 650 mA max.) 9 GND
2 reserved - do not connect! 10 n.c.
3 GND 11 n.c.
4 * Relay NO (normally open) 12 reserved - do not connect!
5 ** Fan supply OK (active low) 13 ** Fan in (active low)
6 * Relay COMMON 14 reserved - do not connect!
7 GND 15 n.c.
8 Relay NC (normally closed)
* Contacts closed if everything is ok
** Status signals, foreseen for fan supervision
3.6 Air Deector/Filter Unit A949.0599
If the power dissipation of an SCore Live frame is between 50 and 100 W,
air deflector/filter units must be used on top of and below the frame. For a
frame dissipating more power, a fan unit (see below) must be used at the
bottom of the frame, combined with an air deflector/filter unit on its top. If
space is available, a second air deflector/filter unit may be used below the fan
unit, increasing the air intake cross-section and thus improving the cooling
efficiency.
For more information on cooling and guidelines for power dissipation estima-
tion refer to chapter 1.2.2, paragraph ‘thermal considerations’.
3.7 Fan Unit A949.0597
In cases where the power dissipation of an SCore Live frame exceeds 100 W,
active cooling is imperative. If no cooling system for the whole rack is used,
this 1U fan unit is required underneath the frame. Seven fans draw air in from
the front (filtered) and from the bottom (unfiltered) and blow it out upward.
The bottom is open and allows installing an additional air deflector/filter unit
underneath the fan unit as described above, increasing the air intake cross-
section. In most cases, however, closing the fan unit’s bottom with a piece of
metal sheet is sufficient.
1
8
15
9
Solder/Crimp
View (or
Socket View)
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