User's Manual

Selex ES S.p.A.
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by Selex ES S.p.A. in writing
57
8.1.5 Switch module – SWITCH
The Switch module realizes a "solid state" switch (MOSFET) device for the distribution of the
power necessary for the proper working of all the modules of the ECOS-D RBS. In particular
its primary task is to distribute the 13.2 Vdc nominal voltage (Master voltage) and 7 Vdc
nominal voltage (Slave voltage).
The 7 Vdc Slave voltage is used by all the other modules to power their logic. It is generated
by the switch module for direct conversion from the 13.2 Vdc Master voltage.
The switch module provides:
 ON / OFF of all the modules on the same RBS
 Protection against Extra Current (short circuit or overload > 22 A ± 5%)
 Protection against Extra voltage (maximum input voltage equal to 30 Vdc ± 5%)
 Protection against voltages outside the guaranteed operating range [10.8  15.6 Vdc].
 Protection against reverse polarity input voltage.
 Protection against over temperature inside the module itself (≥ 100 ° C ± 1%).
The front panel is provided with bi-color leds to help in troubleshooting the system. The table below
describes the meaning of the leds:
LED
Color
Label
Description
1
Green
Vin OK
Normally operating
Red
Vin fail
Input voltage out of range
2
Green
Vout ok
RBS internal voltage levels are correct
Red
Vout fail
RBS internal voltage failure
3
Green
Control bus busy
Activity on the control bus
Red
Control bus fail
control bus among the modules is in failure
Red blink
Control bus fail
Bad message received
4
Green
Upload
Firmware upload in progress
Red
Upload fail
Firmware upload failed