Navitron NT990BNWAS
Approved for compliance with IMO Resolution MSC.128(75) the Navitron NT990BNWAS is available as a basic system to operate proprietary alarm units etc. or, as an expanded system complete with selector units and individual cabin and /or crew call sounders. The resultant alarm system provides a regulation safety monitor requiring regular acknowledgement (Reset) by the duty watch personnel at time intervals between 3 and 12 minutes.
Once activated, completion of the specified timeout period (3 – 12 mins) will automatically generate a Bridge visual alarm (15 secs) followed by a Bridge audible alarm (15 secs) which is tone and volume adjustable during installation. Alarm cancellation and commencement of a new timing period will occur whenever the BNWAS ‘Reset’ button is operated on the main unit or other Wheelhouse/ Bridge located Reset units.
Failure to ‘Reset’ the system during the 30 second Bridge visual/ audible alarm period will result in automatic ‘Officer Call’ alarm activation which, if not acknowledged within a maximum period of 3 minutes will automatically be followed by the generation of ‘Crew Call’ alarms. In the event of a sudden crisis situation requiring immediate Officer assistance, the NT990BNWAS also features an ‘Emergency Call’ facility which may be operated at any stage of the timing cycles. Further built in security and error management provisions include ‘Tamper’ and ‘Power Fail’ alarm indications fully commensurate with MSC.128(75). The NT990BNWAS is available in basic and expanded system forms to suit vessels of all types and tonnages and can be operated from 115 / 230VAC (DB2) and 24Vdc (DB 1) ships main power supplies as required.
Standard supply:
- NT990BNWAS Control/Display Unit
- NT990BNWAS Distribution unit, Type DB1 (24Vdc power supplies only), or
- NT990BNWAS Distribution unit, Type DB2 (115/230VAC 50/60Hz (primary) power supplies and 24Vdc backup)
Optional supply:
- BNWAS RST Remote reset units
- WAS OSS 2nd Stage selector switch
- WAS BVA Bridge visual alarm
- WAS MCA 2nd Stage Master’s cabin sounder unit
- WAS CA 2nd Stage Officer cabin sounder unit
- BNWAS ADU 3rd Stage alarm distribution unit
- WAS AU1AC / AU2AC / AU1DC / AU2DC 3rd Stage AC/DC Sounder units
Specification:
| Power Supply: | |
| BNWAS / 1: Primary Emergency |
24Vdc (18-36Vdc) 24Vdc (18-36Vdc) |
| BNWAS / 2: Primary Backup Emergency |
115/230VAC 50/60Hz 24Vdc (18-36Vdc) 24Vdc (18-36Vdc) |
| Power consumption: | 2.5W to 3.8W (max illumination) + 1W per Remote Reset |
| Auto (Remote) Activation: NMEA sentence $XXHTD Analogue Voltage 11-40Vdc |
4800 or 38400 baud Installation selectable switchline polarity |
| Operator Controls: | |
| Time (Keyswitch security protected): | 3 to 12 minutes selectable in 1 min increments |
| Work Mode (Keyswitch security protected): | Selectable ‘ON’, ‘OFF’ or ‘AUTO’ Mode |
| Illumination (Keypad): | Variable Red LED Backlight |
| Reset (Pushbutton): | Cancels all alarms and resets timing cycles |
| Emergency Call (Protected pushbutton): | Summons immediate officer assistance |
| Reset (Remote Unit) (Pushbutton): | Cancels alarms / Restarts timing / Adjusts Remote unit illumination level |
| Alarm Outputs & Status Displays: | |
| Bridge Visual: | LED + volt free N/O contact rated 5A @ 30Vdc/220VAC |
| Period: | 15 secs |
| Bridge Audible: | LED + volt free N/O contact rated 5A @ 30Vdc/220VAC |
| Period: | 15 secs |
| Adjustment: |
Tone & Volume installation adjustable
|
| Officer Call: | LED + volt free N/O contact rated 5A @ 30Vdc/220VAC |
| Period: | 90-180 secs |
| Adjustment: | 90, 120, 150, 180 secs installation adjustable |
| Crew Call: | LED + volt free N/O contact rated 5A @ 30Vdc/220VAC |
| Period: | Until Reset |
| AC Power Fail (BNWAS 2) DC Power Fail Computer Fail Tamper |
Status LED (Volt free N/O contact rated 5A @ 30Vdc/220 VAC for ext. console malfunction alarm) |
| Complete Power Fail: | Volt free S/P C/O contact to external Fail Alarm |
| Operating Temperature: | -15 to +55°C |
| Compass Safe Distance: NT990BNWAS Control/Display Unit NT990BNWAS Distribution unit BNWAS RST Remote reset unit WAS OSS Selector switch WAS BVA Bridge visual alarm WAS MCA Cabin sounder unit BNWAS ADU Alarm distribution unit WAS AC/DC Sounder unit |
0.2 m 0.2 m 0.2 m 0.1 m 0.1 m 0.1 m 0.25 m 0.1 m |
| Dimensions: NT990BNWAS Control/Display Unit NT990BNWAS Distribution unit 1 NT990BNWAS Distribution unit 2 BNWAS RST Remote reset unit WAS OSS Selector switch WAS BVA Bridge visual alarm WAS MCA Cabin sounder unit BNWAS ADU Alarm distribution unit 100 dB WAS AU Sounder unit 112 dB WAS AU Sounder unit |
144 × 144 × 47 mm 222 × 146 × 55 mm 275 × 175 × 65 mm 58 × 64 × 35 mm 95 × 145 × 49 mm Ø93 × 65 mm 90 × 115 × 55 mm 300 × 150 × 120 mm 86 × 86 × 64.5 mm 130 × 130 × 133.5 mm |
| Weight: NT990BNWAS Control/Display Unit NT990BNWAS Distribution unit 1 NT990BNWAS Distribution unit 2 BNWAS RST Remote reset unit WAS OSS Selector switch WAS BVA Bridge visual alarm WAS MCA Cabin sounder unit BNWAS ADU Alarm distribution unit 100 dB WAS AU Sounder unit 112 dB WAS AU Sounder unit |
1 kg 0.85 kg 1.5 kg 0.2 kg 0.5 kg 0.15 kg 0.5 kg 3.1 kg 0.25 kg 0.75 kg |
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