The SM Electrics MSCCM 210.24.0.0 (MSC-WAS-2011) Connecting Module is the central interface component of the “le guardian 2025” Bridge Navigational Watch Alarm System (BNWAS). It serves as the brain and hub for the entire BNWAS, managing the connection, power, and communication among all watch alarm peripherals (like reset buttons, cabin alarms, and buzzers) and interfacing the system with the vessel’s VDR (Voyage Data Recorder) or other bridge systems. Essentially, it’s the module that ensures the watch alarm system functions as a cohesive unit.
Technical Specification
General:
- Role: Central processing and connection unit for the “le guardian 2025” BNWAS.
- Function: Monitors all BNWAS alarm devices and reset facilities, manages alarm stages, and provides interfaces to other ship systems.
- Compliance: MED (Marine Equipment Directive) Type Approved and Wheel Marked (e.g., Certificate No.: DNV-GL MEDB000034A). Complies with IMO Resolution MSC.128(75), IEC 62616, IEC 60945, and IEC 61162-1/2.
Electrical:
- Power Supply: 24 VDC nominal (likely operates within a range like 19.2 VDC to 28.8 VDC).
- Main/Backup Supply Monitoring: Provides indication for main supply failure and backup supply failure.
Inputs & Outputs:
- Periphery Connections: Designed to connect all peripheral equipment of the BNWAS, including:
- Watch Alarm Reset Units (WAR series)
- Officer’s Cabin Alarm Panels (WAP series)
- Extension Buzzers (WAB series)
- Motion Sensor Kits (WMS series)
- Emergency Call buttons (manual release and alarm transfer inputs, typically dry contact or NMEA).
- NMEA Interface:
- Bi-directional serial interface: For communication with external systems.
- VDR Link: Connects to Voyage Data Recorder (VDR) to transmit relevant operating states (e.g., alarm acknowledgements, system status).
- BAM/CAM Interface: Can transfer alarms from or receive commands from Bridge Alert Management (BAM) / Central Alarm Management (CAM) systems.
- NMEA Commands: Capable of receiving external NMEA commands for reset, start/stop, and emergency call.
- Alarm Transfer Outputs: Likely includes relay outputs for transferring alarms to different locations (e.g., Captain’s cabin, Public Areas, designated backup OOW cabins).
- Automatic Start Inputs: Can receive automatic start signals from autopilot (dry contact or NMEA).
Physical & Environmental:
- Mounting: Designed for TS 35 terminal rail (DIN-rail) mounting, facilitating installation within bridge consoles or electrical cabinets.
- Dimensions: Compact (specific dimensions for this module are not explicitly detailed in publicly available brochures, but as a DIN-rail module, it would be designed for efficient space usage).
- Operating Temperature: -15°C to +55°C.
- Storage Temperature: -20°C to +70°C.
- Humidity: 0-95% non-condensing.
- Enclosure Rating: (Not explicitly stated for the module itself, but designed for the internal environment of a marine console).
Features:
- Compact Design: Small form factor for easy integration.
- Robustness: Built for the demanding marine environment.
- Ease of Installation: Designed for straightforward connection to peripheral equipment.
- Software Selector: May include internal software selectors for configuring alarm stages and backup OOW cabin selections.
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