BRIDGE NAVIGATION WATCH ALARM SYSTEM
Bridge Navigation Watch Alarm System is used to monitor bridge activity and detect the officer of the watch disability which could lead to marine accidents. If, for any reason, the officer of the watch becomes incapable of performing the officer of the watch duties and would not confirm his presence at appropriate time periods the system will automatically start the alerting procedure (in accordance with “Annex 11. Resolution MSC.128 (75) Performance standards for a bridge navigational watch alarm system”).
New regulations from IMO’s Maritime Safety Committee (MSC) will require carriage of a Bridge Navigational Watch Alarm System (BNWAS) complying with IMO performance standards. For existing ships, the equipment should be installed in connection with the first survey after the following deadlines:
· Existing passenger ships and ships over 3000 GT: 1 July 2012.
· Existing ships over 500 GT: 1 July 2013.
· Existing ships over 150 GT: 1 July 2014.
New ships over 150 GT and all new passenger ships constructed after 1 July 2011 shall be equipped with a Bridge Navigational Watch Alarm System
EWAS 3.1 FEATURES:
· Easy to install
· Based on microcontrollers and modern technology
· Two separate 24vdc power supplies or battery backup
· Dormant period selection 3-12 minutes password protected
· Emergency call facility
· Manual/Auto activation mode
· Time display with timer bar graph
· Activation of the system protected by password
· Minimum 2 independent reset buttons (IP67)
· NMEA input from Track Control System,
· NMEA output to VDR
· System fault binary signal to external alarm system
· Visual and acoustic alarm (selectable tone)
· Up to 4 officers on duty selection
· LCD display backlight with dimmer
· Reset function from external bridge devices
· Reset button circuit supervision
· Reset buttons ilumination dimmable
EWAS 3.1 OPTIONS:
· Ability to connect a PIR movement sensors
· Additional officer’s cabin alarm panels duty selectable
· Guard port secure functionality
· Battery back-up module with integrated charger
· Additional alarm horns as general alarm signalization
EWAS 3.1 TECHNICAL SPECIFICATION:
|
POWER SUPPLY MAIN |
24VDC |
|
POWER SUPPLY EMERGENCY |
24VDC OR BATTERY (provides 1 hour of operation) |
|
POWER CONSUMPTION |
MAX. 1A |
|
NMEA INPUT |
1 x RS485 |
|
NMEA OUTPUT |
1 x RS485 |
|
BINARY OPTOCOUPLER INPUTS |
4 |
|
FREE CONTACT OUTPUTS |
5 x NO |
|
BINARY RESET INPUT |
2 x NO |
|
BINARY ALARM OUTPUT |
1 x NO/NC |
|
PANEL DIMENSIONS |
140x140x45 CONSOLE FLUSH MOUNT |
|
MAIN UNIT DIMENSIONS |
204x84x30 MOUNTED ON 35mm DIN RAIL |
|
OPTIONAL BOX VERSION |
300x200x180 MOUNTED ON THE WALL |
|
APPROVALS |
MSC.128(75) , IEC 62616, IEC 60945 PRS pending, GL pending |
EWAS 3.1 - GENERAL CONFIGURATION DIAGRAM
EWAS 3.1 OPERATIONAL MODES:
· OFF: System is not active, no timer running.
· MANUAL: Requires password to activate EWAS. Timer starts immediately. Dormant time period can be selected between 3-12 minutes. Reset function from Reset Buttons, PIRs (if connected) or any bridge equipment connected to confirm OOW availability.
· AUTO: Requires password to activate EWAS. Timer starts after signal from Track Control System or Autopilot. Dormant time period can be selected between 3-12 minutes. Reset function from Reset Buttons, PIRs (if connected) or any bridge equipment connected to confirm OOW availability.
· EMERGENCY CALL: When EWAS is active, in emergency situation OOW can immediately activate second and third alarm stage to perform general ship alarm
· GUARD SECURE: EWAS can work as standard burglar alarm in Guard Secure Mode. System activate alarm when any person presence is detected. (Motion Sensors are necessary to be connected)
EWAS 3.1 ALARM STAGES
VISUAL INDICATION STAGE: Reset Buttons are flashing red and LED Display in Control Panel is flashing
1ST STAGE AUDIBLE: Control panel located on the bridge generates audible signal. Signal tone can be selected during commissioning or service.
2ND STAGE AUDIBLE: Alarm panel located in Captain’s Cabin generates audible signal and red light is flashing. If EWAS is optionally equipped with Officer’s Alarm Panels, also selected Back-Up Officer Panel generates audible alarm.
3RD STAGE REMOTE: EWAS activates general alarm audible in all accommodation ship area. System can be equipped with additional alarm horns connected as general alarm signalization.