Alphatron ALPHA BNWAS Installatie- en bedieningshandleiding - Pagina 5
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ALPHA BNWAS
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INTRODUCTION :
The ALPHA BNWAS Bridge Navigational Watch Alarm System is flexible in
use and complies to the latest International regulations (Approved
according to IMO Resolution 128(75)). This BNWAS system is applicable
on all sea-going vessels.
The ALPHA BNWAS has an internal buzzer and at the same time a relay
for an audio alarm at the bridge. Also there are 2 relays contacts to call
the officer and to call the crew.
Between the "call officer" and the "call crew" stage the time is adjustable
from 90 to 180 seconds. This adjustment can be made by a 16-position
switch which is located next to the big chip on the print.
Normally this switch will be in the default zero position (90 sec.) This time
may be adjusted to the maximum time of 180 seconds when the watch
alarm is placed on for example a large passenger vessel.
The status of the relays and buzzer are visualized by the three red LED's
on the top of the front panel. When the watch alarm is malfunctioning or
the power supply is not connected, the watch alarm will generate an
alarm message on your monitoring system by opening the malfunction
contact.
All LED's except for those of the "call officer" and "call crew" are dimmable
in five stages which can be performed by holding the reset button for
more than 1 second. The reset button is tamper proof because the time
system will only recover on the rising edge of the internal and external
reset input. The run led will flash when the watch time is running and is
also available on the Alarm Buzzer or Remote Reset Button. The BNWAS
control unit is provided with an emergency call function, this mode can be
activated when immediate help is needed on the bridge.
The ALPHA BNWAS is Lloyd's register approved.
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