KONGSBERG RCU502I 421768

Core Technical Performance Parameters

• Processor Architecture: Dual hot standby redundant 32-bit industrial CPU, automatic seamless failover without control interruption
• Communication Interfaces: 8× Ethernet RJ45 marine grade ports, dual redundant CAN bus, serial RS485 fieldbus
• Supported I/O Expansion: Compatible with Kongsberg RDIOR400, RMP201-8 series remote I/O modules
• Operating Supply Voltage: 24 V DC marine standard, tolerance 18–32 V DC
• Power Consumption: Max 45 W full load
• Operating Temperature: -25 °C to +70 °C continuous operation
• Environmental Compliance: IEC 60945 marine standard, DNV, ABS, BV marine vessel type approval
• Anti-Vibration Standard: IEC 60068-2-6, 10–2000 Hz continuous vibration resistance
• Protection Grade: IP30 module housing, install inside sealed marine control cabinet
• Overall Dimensions: 350 mm Length × 160 mm Width × 90 mm Depth
• Net Weight: 1.27 kg
• Storage Temperature: -40 °C to +85 °C
• Fault Diagnosis Channel: Per-channel hardware health monitoring, network link loss detection, CPU heartbeat status output

Function & Feature Highlights

1. Hot standby dual CPU redundancy, single processor failure triggers automatic switchover within 10 ms without control signal loss
2. Built-in comprehensive self-diagnosis system, continuously monitor CPU, power supply, communication bus and expansion I/O module health
3. Deterministic real-time signal processing, millisecond-level response for machinery safety shutdown logic
4. Distributed architecture reduces central cabinet wiring quantity, simplifies marine vessel cabling layout
5. Salt fog corrosion resistant PCB with conformal anti-corrosion coating for offshore harsh atmosphere
6. Support alarm monitoring, machinery control, power management, ballast tank level regulation integrated logic execution
7. Type approved for Zone 2 hazardous marine offshore gas processing areas
8. Front panel LED indicator array for power, network link, CPU active status and fault alarm visualization

Working Principle

1. RCU502I communicates with field RDIOR/RMP I/O modules via internal fieldbus to acquire vessel sensor data (temperature, pressure, liquid level, valve feedback, switch status).
2. Dual CPU synchronously runs identical control logic program; primary CPU executes output control, standby CPU maintains real-time data mirror.
3. Redundant Ethernet bus transmits processed real-time data to vessel central operator stations, receives operator setpoint commands for local control adjustment.
4. When primary CPU or communication channel fails, standby CPU instantly takes over all control tasks without signal interruption, sends fault diagnostic codes to central alarm system.
5. Independent safety logic channel executes emergency shutdown (ESD) trigger signal processing for fire & gas detection, machinery overload protection.

Material & Structural Composition

• Main Housing: Cold rolled steel sheet with marine anti-salt spray epoxy coating, anti-vibration reinforced frame
• PCB Board: High TG marine grade FR4 substrate, full silicone conformal anti-corrosion coating
• CPU Core Components: Industrial wide temperature range grade memory chips, anti-electromagnetic interference crystal oscillator
• Connector Terminals: Nickel-plated copper terminal blocks, anti-corrosion stainless steel locking screws
• Heat Dissipation: Passive ribbed aluminum heat sink, no fan design to avoid fan failure risk
• Front Panel: Impact resistant polycarbonate transparent viewing window for LED status observation

Installation Requirements

1. Standard 19-inch marine cabinet horizontal rack mounting, fixed via four M8 mounting bolts
2. Maintain minimum 30 mm vertical ventilation gap between stacked modules for passive heat dissipation
3. Install inside IP54 sealed marine control cabinet with dehumidification device to prevent salt fog condensation
4. All communication cables adopt marine grade shielded double twisted pair cable, single-point cabinet grounding
5. Avoid installation adjacent to high-power frequency drives, main engine starter panels to reduce electromagnetic interference
6. Cabinet internal ambient humidity must be controlled below 75% RH without condensation

Application Scenarios

• Ocean-going cargo ship K-Chief vessel alarm & monitoring system
• Offshore oil & gas platform machinery safety K-Safe ESD shutdown system
• FPSO floating production storage unit tank level and pump distributed control
• Yacht and passenger vessel power management and auxiliary machinery automation
• Marine offshore wind turbine platform monitoring control

Operation & Maintenance Precautions

1. Module power supply must adopt marine grade 24 V DC redundant power supply, avoid unstable grid voltage fluctuation
2. Do not remove module front panel during live power operation; internal circuit exposed will cause salt fog short circuit failure
3. Conduct annual inspection of conformal coating integrity; re-coat if coating peeling or corrosion spots appear
4. All network cable connectors must be sealed with marine grade waterproof rubber gaskets to prevent salt crystal deposition
5. Firmware upgrade must be completed during vessel port stop shutdown state; online upgrade may cause logic control interruption
6. Do not stack heavy objects on cabinet rack above RCU502I module, avoid mechanical deformation of PCB circuit board