Kingfisher Plus+ Hardware Manual
The BP-x-PLUS backplane provides switchable 12VAUX output for powering extra circuits
(e.g. an external radio) with its voltage derived directly from the BP-x-PLUS input and
therefore not regulated. The output is in ON-state by default and can be controlled by the
Toolbox PLUS+ software or user logic (implementation pending).
The status of BP-x-PLUS power rails is indicated by corresponding LED indicators shown on
the figure below.
BP-x-PLUS LED Indicators
5V-rail status (top row of LEDs):
• Green (left) LED — 5 V
DC
power is normal.
• Red (right) LED — 5 V
DC
level is out of range due to overload or circuit fault.
12VAUX-rail status (bottom row of LEDs):
• Green (left) LED — 12 V
DC
AUX power is turned ON and is normal.
• Red (right) LED — 12 V
DC
AUX level is out of range due to overload or circuit fault.
• Both LEDs OFF — 12 V
DC
AUX power is turned OFF.
The BP-x-PLUS backplanes offer the following protection features:
• Input is protected from overvoltage and reverse polarity (crowbar protection level set to
18 V
DC
), and from overcurrent (a polyfuse rated at 6 A @ 25 °C).
• 5 V
DC
output is protected from overload (5 A maximum output current).
• 12 V AUX output is protected from overload (2 A maximum output current).
Hardware Manual Version 7.16
http://www.servelec-semaphore.com/
Page 24
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