Rolls-Royce SLIO-02

Core Technical Specifications

• Power Supply: 24VDC marine SELV stabilized power (20–28VDC operating range)
• I/O Channel Configuration: 16×isolated digital input, 8×digital output, 4×4–20mA analog input, 2×PWM pulse output
• Communication Bus: Dual redundant CAN CCN Controller Communication Network, CAN 2.0B protocol
• Marine Certification: DNV-GL Type Approval, CE, UL industrial certification
• Isolation Voltage: 1000VAC channel-to-backplane galvanic isolation
• Pulse Frequency Input Range: 0–10kHz engine RPM pulse signal acquisition
• Operating Temperature: -20°C ~ +60°C marine cabinet internal
• Environmental Tolerance: Salt fog resistance per IEC 60068-2-11, vibration 1–150Hz 0.7g
• Humidity: 5%–95% RH non-condensing marine engine room environment
• Dimension: 120mm (L) × 100mm (W) × 75mm (D)
• Net Weight: 0.5kg

Function Features

1. Dual redundant CAN bus communication interface, automatic bus switchover when single communication channel fault occurs
2. Hardened circuit design resisting engine room vibration, salt fog and electromagnetic interference from ship power system
3. Multi-type signal compatibility: digital contact, NAMUR sensor, 4–20mA analog, frequency pulse, PWM control output
4. On-board real-time engine parameter data buffer storage for post-fault voyage data recording
5. Built-in self-diagnosis function for wiring open-circuit, short-circuit and internal circuit failure
6. K-Link software tool support for remote firmware upgrade, real-time data trend monitoring and fault log export
7. Modular expandable distributed architecture, multiple SLIO-02 nodes deployed along entire ship propulsion system

Working Principle

Material Composition

• Outer Housing: Black ABS marine flame retardant plastic shell with anti-salt fog coating
• PCB: Heavy copper anti-corrosion FR4 board with transparent acrylic conformal coating against salt mist corrosion
• Communication Chips: Industrial-grade CAN transceiver with ESD surge protection
• Terminal Components: Nickel-plated copper spring terminals resisting marine salt oxidation
• Internal Components: Shock-absorbing rubber pad fixed microprocessors to resist hull vibration

Structural Characteristics

1. Compact rectangular DIN rail mounting housing, suitable for narrow marine control cabinet installation
2. Front double-row pluggable terminal blocks, color-coded for digital input, analog input, power and communication wiring
3. Dual CAN bus DB9 communication connectors on front panel for redundant bus connection
4. Front panel LED indicator set: power, CAN bus A/B communication, module running, I/O channel fault
5. Integrated bottom rubber anti-vibration mat to reduce vibration transmission from DIN rail

Installation Requirements

1. Mount on standard 35mm DIN rail inside sealed marine control cabinet with air dehumidification equipment
2. All signal and communication wiring use marine-grade shielded twisted pair cable, shield single-point chassis grounded
3. Maintain ≥30mm clearance between SLIO-02 and frequency converters, engine starter contactors to reduce EMI
4. Dual CAN bus wiring must adopt separate cable trunking to avoid simultaneous cable damage
5. Cabinet temperature must not exceed 55°C under continuous full-load engine operation

Application Scenarios

• Merchant ship propulsion control: Main engine RPM monitoring, propeller pitch servo control
• Offshore drilling platform diesel generator monitoring & auxiliary valve control
• Naval vessel auxiliary machinery: Cooling water pump, fuel supply valve interlock control
• Marine LNG carrier gas detection system signal collection & alarm output
• Ship steering gear distributed monitoring and proportional valve drive control

Operation Precautions

1. Do not install module outside sealed cabinet; direct salt fog exposure will cause rapid circuit corrosion
2. Perform annual DNV-GL compliance inspection, clean terminal block salt deposit every 6 months
3. Avoid connecting unfiltered engine pulse signals directly to frequency input channels without signal isolation
4. If single CAN bus communication fault alarm activates, inspect shield cable integrity and connector pin oxidation
5. Do not disassemble plastic housing at sea; internal circuit maintenance requires shore-based professional workshop
6. Storage spare modules must be placed in constant temperature low-humidity anti-salt fog storage cabinet