Product Short Description
Product Brief Introduction
Field remote distributed I/O module under Kongsberg marine automation system, deployed at vessel machinery room, pump room and offshore platform field equipment side, collects on-site sensor signals and executes local actuator output control, reducing long-distance signal wiring loss and interference risk.
Description
Complete Technical Specifications
- Electrical Signal Parameters
- Power Input: 24 VDC isolated power supply
- Configurable Signal Channels: 8 universal multiplex channels per module
- Supported Signal Types: 24 VDC digital switch, 4–20 mA analog loop, 0–10 V voltage signal
- Communication Interfaces: PROFIBUS DP, Modbus RTU dual redundant fieldbus
- Channel Isolation: 1500 V galvanic isolation per channel
- Environmental Adaptability
- Operating Temperature: -25 °C ~ +70 °C for machinery room high-temperature environment
- Protection Grade: IP30 cabinet installation standard
- Salt Fog Test: 300 hours neutral salt spray pass
- Physical Size & Weight
- DIN rail mounting module size: 140 mm × 115 mm × 42 mm
- Net Weight: 0.35 kg
Core Function Features
- Single-channel software configurable as input or output via engineering software
- On-site signal digital filtering to eliminate machinery room vibration electrical noise
- Bus communication fault automatic local hold function to maintain last control output state
- Overvoltage, reverse wiring automatic protection circuit to avoid module burnout during field wiring error
- Remote channel calibration function via bus without on-site module disassembly
Working Principle
Multiplex analog/digital signal acquisition circuit scans 8 field channels in fixed cycle, converts analog current/voltage signals into digital data and transmits to central control rack through PROFIBUS bus. Receives central controller output commands to drive on-site solenoid valves, indicator lights and auxiliary contactors; when bus communication disconnects, internal hold circuit locks output state to prevent sudden equipment stop or dangerous action.
Material Composition & Structural Characteristics
- Housing: ABS flame retardant anti-corrosion plastic shell
- Internal PCB: Coated anti-moisture conformal coating
- Wiring Terminals: Screw-type corrosion-resistant copper terminals with anti-loosening spring washers
Installation Requirements
- Mount on standard 35 mm DIN rail inside machinery room local IP30 electrical junction box
- Junction box must be sealed with rubber gaskets to block oil mist and water vapor ingress
- Field sensor signal cables separated from high-power motor power lines, wiring duct isolation
Application Scenarios
- Vessel main engine machinery room temperature, pressure remote signal collection
- Offshore platform water injection pump, oil transfer valve local control I/O unit
- Ship ballast tank liquid level sensor distributed signal acquisition
- Coastal workboat deck hydraulic valve group remote output control module
Operation & Usage Precautions
- Field wiring must strictly distinguish positive and negative polarities; reverse wiring will trigger overcurrent protection and temporary module lockout
- Regularly clean junction box internal oil mist accumulation every 6 months to avoid terminal corrosion
- Do not install module within 1 meter of large diesel engine exhaust pipe to avoid long-term over-temperature operation
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