Description
Below is a concise product introduction for the STN ATLAS LYNGSØE MARINE IOM-402 (Input/Output Module), compiled from available information.
STN ATLAS LYNGSØE MARINE – IOM-402 INPUT/OUTPUT MODULE
1. Overview / What it is
The IOM-402 is a modular Input/Output (I/O) module designed and manufactured by STN ATLAS under the Lyngsøe Marine product line. It serves as a core interface board within shipboard automation and control systems, bridging field-level sensors/actuators with the central control unit (often referred to as the industrial automation feedback circuit or steering/engine control system).
It is specifically associated with Rolls-Royce Marine’s Tenfjord steering gear control system, where it performs functions including:
- Valve position monitoring/feedback
- Precise and reliable steering operation control
- General-purpose digital and/or analog I/O for marine automation loops
STN ATLAS LYNGSOE MARINE IOM402 INPUT -OUTPUT MODULE 271.149.244
2. Key Functions
| Function | Detail |
|---|---|
| Input channels | Digital and/or analog input channels for collecting signals from sensors, switches, transmitters (e.g., 4–20 mA, 0–10 V) |
| Output channels | Driver/relay/analog output channels for controlling valves, actuators, alarms, indicator lamps |
| Signal conditioning | High-precision analog signal acquisition; user-configurable input ranges and scaling |
| Communication | Interface to the host control system via serial links (e.g., RS-232/RS-485 or proprietary bus); typically integrates into the Gamma platform or similar ship automation architecture |
| Monitoring & diagnostics | Built-in fault detection, channel status indication, and self-diagnostic capabilities |
3. Typical Application Areas
- Ship steering gear control (Tenfjord and similar hydraulic/electro-hydraulic steering systems)
- Engine room automation – valve position feedback, pump control, alarm monitoring
- Marine engine control & safety systems
- Bridge console / ECR (Engine Control Room) I/O expansion
4. Design & Environmental Ratings
| Parameter | Typical Value |
|---|---|
| Installation | Control-cabinet modular mounting (DIN-rail or backplane) |
| Protection class | IP65 or higher (suitable for harsh marine environments) |
| Temperature range | Wide operating range designed for engine room / bridge conditions (exact range per datasheet) |
| Vibration & corrosion resistance | Designed to withstand marine vibration, humidity, salt spray |
| Weight | Approx. 0.4 – 0.51 kg (typical for this module family) |
5. Associated / Complementary Modules (Lyngsøe Marine “402” family)
The IOM-402 is part of a family of “402-series” modules that work together:
| Module | Type | Function |
|---|---|---|
| AEM 402 | Analog Input Module | Multi-channel analog signal acquisition (e.g., 4–20 mA, 0–10 V) |
| DEM 401 | Digital Input Module (32 ch) | Switch/sensor signal collection |
| DRM 401 | Relay Output Module | Actuator/alarm driving |
| MXM 402 | Multiplexer Module | Signal multiplexing for multi-sensor consolidation |
| BAP 402 | Engine Safety System | Engine protection logic |
| BAT 416B / 426B | Fire Alarm | Fire detection interface |
This modular architecture allows system integrators to build custom I/O configurations tailored to a vessel’s automation needs.
6. Part / Catalog Number
Commonly referenced as:
- IOM 402
- 271.149.244 (STN ATLAS catalog/part number as listed in supplier catalogs)
7. Who uses it
- Shipyards (newbuild steering/engine room outfitting)
- Naval architects & marine system integrators
- Ship operators for retrofit/spare parts (steering gear control, automation upgrades)
- Typically found on vessels equipped with Rolls-Royce Marine steering systems, Kongsberg, and other marine automation platforms that use the Gamma or compatible bus architecture.
Summary in one line
The STN ATLAS Lyngsøe Marine IOM-402 is a rugged, marine-grade Input/Output module built for ship steering gear control and engine room automation—providing precise sensor acquisition and actuator control with high reliability in harsh sea environments, and designed to integrate seamlessly into Rolls-Royce Marine Tenfjord steering systems and the broader Gamma automation platform.
If you need the full datasheet (pinout, electrical specs, communication protocol, wiring diagrams), I recommend contacting an authorized STN ATLAS / Lyngsøe Marine distributor or checking the part number 271.149.244 in their official catalog.
