Description

The KONGSBERG RMP201-8 is a high-performance Remote Multiplexer (RMP) module within Kongsberg Maritime’s acclaimed K-DP and K-Chief distributed control systems, designed for mission-critical marine and offshore applications. This ruggedized 8-channel digital input module serves as a fundamental interface between field devices and the central control system, enabling real-time monitoring of discrete signals such as switch positions, alarm contacts, and equipment statuses across vessels and offshore platforms. Engineered for extreme operational reliability, the KONGSBERG RMP201-8 forms a key node in Kongsberg’s redundant CAN-based network architecture, ensuring continuous data acquisition even in harsh maritime environments characterized by vibration, humidity, and electromagnetic interference. Its modular design simplifies integration into existing Kongsberg control topologies while supporting hot-swapping for zero-downtime maintenance.

As part of Kongsberg’s RMP200 series, the KONGSBERG RMP201-8 provides galvanic isolation per channel, preventing ground loops and signal degradation while enhancing system-wide safety. The module excels in converting raw field signals into standardized data packets for processing by K-Chief or K-DP controllers, directly supporting vital functions like machinery automation, safety system triggers, and condition-based maintenance. The KONGSBERG RMP201-8 embodies the brand’s commitment to maritime resilience, featuring corrosion-resistant construction and compliance with stringent DNV-GL, IEC, and SOLAS standards essential for vessel operations.

KONGSBERG RMP201-8

Technical Specifications

Parameter Name	Parameter Value
Product Model	KONGSBERG RMP201-8
Manufacturer	Kongsberg Maritime
Product Type	Digital Input Module (Remote I/O)
Number of Channels	8
Input Type	Dry Contact / Wet Contact (24V DC)
Input Voltage Range	0–30V DC
Isolation	500V AC channel-to-channel & channel-to-bus
Power Supply	24V DC ±10% (via RMP backbone)
Power Consumption	1.5W (typical)
Communication Protocol	CAN bus (SAE J1939)
Operating Temperature	-25°C to +70°C
Humidity Tolerance	0–95% RH (non-condensing)
Vibration Resistance	5–100 Hz, 2g amplitude
Certifications	DNV-GL, IEC 60945, SOLAS

Main Features and Advantages

The KONGSBERG RMP201-8 delivers exceptional robustness and diagnostic capabilities tailored for maritime operations. Its channel-level galvanic isolation eliminates cross-talk and ground potential differences, ensuring signal integrity in electrically noisy engine rooms or thruster compartments. Each channel incorporates LED status indication for real-time monitoring of input state and module health, enabling rapid fault localization during troubleshooting. The module’s CAN bus interface supports redundant network configurations, automatically rerouting data if a primary path fails – a critical feature for propulsion control or dynamic positioning systems where uninterrupted operation is non-negotiable.

Configuration flexibility stands out as another key advantage: The KONGSBERG RMP201-8 accepts both dry contacts (passive inputs) and wet DC inputs (24V sourced) without hardware changes, simplifying spare part management. Its IP20-rated enclosure protects against particulate intrusion while compact dimensions optimize control cabinet space. Advanced diagnostics include continuous monitoring of field wiring integrity, detecting open circuits or short circuits before they escalate to operational failures. Backed by Kongsberg’s proprietary software tools, the KONGSBERG RMP201-8 enables predictive maintenance through trend analysis of channel performance data.

Application Field

The KONGSBERG RMP201-8 is indispensable in marine automation scenarios demanding fail-safe signal acquisition. On LNG carriers and cruise ships, it monitors tank level switches, emergency stop buttons, and fire detection system triggers, feeding data to the central safety system (K-Safety). For offshore drilling rigs, the module interfaces with blowout preventer (BOP) status sensors and hydraulic unit position indicators, where reliability directly impacts environmental safety. Dynamic Positioning (DP) vessels utilize the KONGSBERG RMP201-8 to track thruster feedback signals and azimuth controller positions, enabling precise station-keeping during subsea operations.

Naval applications leverage this module for monitoring watertight door statuses, ballast valve positions, and machinery alarms, integrating with K-Chief 600 systems for centralized damage control. In merchant shipping, it supervises generator circuit breakers, bilge pump run-status, and auxiliary engine parameters. The KONGSBERG RMP201-8 also excels in harsh environments like ice-class vessels and polar supply ships, where temperature extremes and vibration necessitate its ruggedized design. Its SIL-2 compliant architecture makes it suitable for safety-critical functions across these sectors.

KONGSBERG RMP201-8

Related Products

KONGSBERG RMP201-16: 16-channel digital input module – Higher density alternative to the RMP201-8.

KONGSBERG RMP202-8: 8-channel digital output module – Complementary module for control command execution.

KONGSBERG RMP211-8: 8-channel analog input module – For 4–20mA/0–10V process signal acquisition.

KONGSBERG RMP207-4: 4-channel relay output module – High-current switching capability.

KONGSBERG RMP205: Communication gateway – Connects RMP networks to K-Chief 600/K-DP controllers.

KONGSBERG RMP220: Power supply module – Provides backbone voltage for RMP201 series modules.

KONGSBERG MPR-100: Remote I/O cabinet – Standard enclosure for mounting RMP201-8 modules.

Installation and Maintenance

Pre-installation preparation: Verify compatibility with the host system (K-Chief/K-DP version) and confirm network addressing conflicts. Ensure the mounting rack or cabinet (e.g., MPR-100) has adequate space, ventilation, and grounding provisions. Inspect the KONGSBERG RMP201-8 for shipping damage and validate firmware revisions using Kongsberg’s Marine Electronics Toolkit (MET). Prepare shielded, twisted-pair cables for CAN bus connections and use marine-grade tinned copper wires for field terminations.

Maintenance recommendations: Perform quarterly visual inspections for corrosion or loose terminals. Monitor channel diagnostics via K-Chief operator stations to identify intermittent faults. During dry-docking, clean terminal blocks with electrical contact cleaner and verify isolation resistance (>100MΩ at 500V DC). Always keep spare KONGSBERG RMP201-8 modules on board, stored in climate-controlled conditions. For replacements, de-energize the RMP backbone power supply first, though module electronics support hot-swapping. Log all maintenance actions in the vessel’s PMS (Planned Maintenance System).