KONGSBERG RAI-16 8100148 Remote Analog Input Module

KONGSBERG RAI-16 8100148 Remote Analog Input Module
I. Product Brief Description
The K-Chief ship automation system from Kongsberg, along with its remote analog signal acquisition module, has the material number 8100148 (the mainstream hardware version is Rev.D2/E1). It belongs to the Norcontrol distributed I/O unit. It is specifically designed to collect analog signals from various temperature, pressure, level, and flow sensors in the ship’s engine room. These signals are transmitted via the CAN bus to the system’s main control unit. It features robust design capable of withstanding vibrations, moisture resistance, and electromagnetic compatibility in harsh marine environments. It is the core acquisition card for the engine room monitoring and alarm system.

Key Technical Parameters Table
Parameter Item Technical Indicator
Analog Input Channels 16 single-ended channels, which can be configured as 8 differential channels via software
Supported Input Signals 4-20mA, 0-20mA current; 0-5V/0-10V DC voltage; Pt100/Pt1000 thermal resistance temperature measurement
A/D Sampling Resolution 16-bit high-precision analog-to-digital conversion
Measurement Accuracy ±0.1% FS (Full Scale)
Channel Isolation Isolation between channels, between channels and the bus, and between the power supply
Power Supply DC24V (Allowable range 19.2~28.8VDC)
Communication Bus CANopen high-speed fieldbus (Redundant CAN bus link)
Additional Function Channel 1 pulse counting channel (5~500Hz)
Sensor Excitation Power Supply Maximum 100mA for single channel, total module current limit of 350mA, overload protection + alarm indication
Operating Environment Temperature -20℃ ~ +70℃
Storage and Transportation Temperature -40℃ ~ +85℃
Protection Grade IP20 (Installed in control cabinet)
Overall Machine Weight Approximately 2.0kg
Installation Method Installation by screwing into the cabinet / Optional DIN rail installation
Terminal Connection Plug-in spring terminals, compatible with 2.5mm² cables
Marine Certification DNV, LR, BV major classification society ship equipment certification, CE certification
Overall Dimensions 144mm×42mm×110mm

Core Product Performance
Multi-signal compatibility acquisition
One-stop adaptation for the most common industrial current and voltage signals as well as the mainstream platinum resistance temperature sensors of ships. Channel parameters can be freely configured through software and the signal type can be switched without hardware modification.
Complete local calculation and alarm logic
The module is locally equipped with limit judgment, over-limit alarm, trend caching, and millisecond-level timestamp marking. The collected data is pre-processed before being uploaded to the main controller, reducing the computing load of the upper-level controller.
Full hardware self-diagnosis mechanism
Continuous monitoring: sensor disconnection, overload of excitation power supply, CAN bus failure, channel short circuit / open circuit. Fault information is uploaded to the monitoring interface in real time and local indicator lights are indicated.
Adaptation to harsh ship environments
The entire machine has an aluminum alloy casing and the circuit board is coated with three protection layers, capable of withstanding ship body vibration and shaking, high humidity, salt spray, and electromagnetic interference in the engine room, and can operate continuously without interruption for 24 hours a year.
Redundant communication guarantee
Dual-channel CAN bus redundancy design. When one bus is disconnected, data transmission is not interrupted, meeting the requirements for uninterrupted monitoring of the ship safety system.
Data recording and traceability
Storage of real-time process trends and alarm event logs, facilitating troubleshooting of ship compartments and equipment operation traceability.

Application Areas
Various ocean-going cargo ships, container ships, oil tankers, engine room monitoring and alarm systems (UMS – Unmanned Machinery Space);
Process parameter collection for offshore drilling platforms, FPSO (Floating Production Storage and Offloading) facilities;
Ship power stations: monitoring of generator water temperature, oil pressure, exhaust temperature, cooling water pressure;
Liquid level monitoring of compartments: fuel tank, fresh water tank, ballast tank liquid level signal collection;
Monitoring of auxiliary machinery such as pumps, air compressors, refrigeration units;
Port shore-based automation, offshore industrial measurement and control systems.