Product Short Description
Product Brief Introduction
Rack-mounted signal interface board core of Kongsberg marine DGU8800B/E distributed control platform, used as bridge control panel signal exchange card, realizes real-time data interaction between local operation panel and ship distributed control network, supports hot-swap maintenance without vessel system shutdown.
Description
Complete Technical Specifications
- Electrical Technical Parameters
- Operating Power Supply: 24 VDC, power consumption 12 W
- Signal Channel Capacity: 32-way digital input, 16-way digital output, 8-channel analog signal conversion
- Communication Bus: Kongsberg proprietary CAN marine bus, 500 kbps transmission rate
- Signal Isolation: Each channel 2500 VAC optical isolation to suppress ground loop interference
- Environmental Index
- Operating Temperature: -10 °C ~ +65 °C marine cabinet range
- Vibration Resistance: DNV marine equipment vibration standard certified
- Humidity Tolerance: 10% ~ 90% RH non-condensing
- Physical Structure Data
- Standard VME rack card size: 6U vertical board
- Net Weight: 0.78 kg
Core Function Features
- Real-time bridge operation button, indicator light signal acquisition and forwarding processing
- On-board signal filtering circuit to eliminate marine power grid harmonic interference
- Hot-swap live replacement function, automatic bus reconnection after card insertion
- Integrated alarm signal priority sorting logic for bridge emergency alert display
- Built-in channel self-test function, single-channel fault independent alarm without affecting overall board operation
Working Principle
Collects digital button operation signals and analog potentiometer set value signals from bridge control panels through front terminal connectors, optical isolation circuit filters interference signals and transmits to on-board MCU chip. MCU packages signals into Kongsberg CAN bus protocol frames and uploads to distributed main controller; simultaneously receives network control commands to drive panel indicator lights and feedback digital output signals, independent isolation design ensures single channel failure will not short-circuit entire bus network.
Material Composition & Structural Characteristics
- Circuit Substrate: High-reliability marine FR4 PCB with conformal anti-corrosion coating
- Connector Parts: Gold-plated VME backplane bus connector + front panel spring terminal blocks
- Bracket: Cold-rolled steel anti-rust coated rack fixing bracket
- Internal Layout: Independent analog signal zone, digital signal zone and power supply zone separated by shielding copper bars
Installation Requirements
- Install into dedicated DGU8800 series 6U VME marine control cabinet slot, lock with front panel fixing screws
- Cabinet must be equipped with marine air conditioning cooling system to avoid over-temperature
- Panel signal wiring uses shielded twisted pair wire, shielding layer single-point grounded at cabinet ground bar
- Keep away from high-power inverter and starter cabinet slots, minimum 2 rack slot isolation distance
Application Scenarios
- Merchant ship bridge main engine telegraph control panel signal interface
- Offshore vessel dynamic positioning bridge operation panel signal conversion unit
- Yacht, ferry central monitoring console data exchange card
- Offshore supply vessel deck machinery local control panel communication interface
Operation & Usage Precautions
- Hot-swap operation must follow Kongsberg official procedure: turn off board power switch first then extract card
- Prevent conductive metal scraps from falling into rack slot during maintenance, which will cause backplane short circuit
- Do not remove conformal anti-corrosion coating on PCB surface, coating damage will lead to salt fog corrosion failure
- Annual calibration of analog channel signal accuracy required, deviation exceeding ±0.5% needs circuit trimming
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