Kongsberg RCU602

Technical Dossier

Product Details And Specifications

KONGSBERG RCU Series Technical Notes

The Evolution of RCU Series Architecture

The RCU series originated as a modular remote operator station concept within Kongsberg's maritime automation division. Early-generation units (RCU100–RCU300 range) used proprietary serial bus communication protocols and were designed for standalone panel integration aboard vessels and in onshore control rooms. These units relied on RS-422 and RS-485 physical layers with Kongsberg-specific framing, limiting interoperability with third-party SCADA systems.

Mid-generation RCU modules (RCU400–RCU500 range) introduced dual-redundant communication paths and began supporting Modbus RTU as a secondary protocol, enabling integration with third-party DCS platforms. Hardware architecture shifted to surface-mount PCB construction, improving vibration tolerance for marine applications.

The RCU600 generation — which includes the RCU602 — represents the mature phase of the series. These units feature enhanced EMC shielding, wider operating temperature ranges (-20°C to +70°C), and support for both legacy serial and Ethernet-based supervisory links. The RCU602 specifically is a dual-channel remote control unit used for joystick and lever input processing in dynamic positioning (DP) and thruster control systems. As of 2026, the RCU600 series is in the mature/end-of-active-production phase; Kongsberg has transitioned new projects to the K-Thrust and K-Pos next-generation platforms. However, the installed base of RCU600-series hardware remains extensive, and long-term maintenance support is a primary operational requirement for fleet operators and plant managers.

RCU Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced models within the KONGSBERG RCU product family. Units are categorized by primary function:

Remote Control & Operator Interface Units

• RCU602: Dual-channel remote control unit for DP joystick and thruster lever input processing
• RCU601: Single-channel remote control unit, panel-mount operator interface for vessel automation
• RCU603: Triple-redundant remote control unit for safety-rated DP Class 3 installations
• RCU604: Remote control unit with integrated display interface for K-Chief 600 systems
• RCU500: Mid-generation remote control unit with Modbus RTU secondary protocol support
• RCU502: Dual-output remote control unit for twin-engine vessel thruster configurations

I/O and Signal Conditioning Modules

• RCU410: Analog input module, 8-channel, 4–20 mA, for sensor signal aggregation
• RCU411: Analog output module, 4-channel, 0–10 V, for actuator drive signals
• RCU420: Digital input module, 16-channel, 24 VDC, for discrete status monitoring
• RCU421: Digital output module, 16-channel, relay contact, for alarm and interlock outputs
• RCU430: Combined AI/DI module, 8+8 channel, for compact panel installations

Communication and Bus Adapter Modules

• RCU310: Serial communication adapter, RS-422/RS-485, for legacy Kongsberg bus integration
• RCU311: Dual-port serial adapter with protocol conversion for Modbus RTU bridging
• RCU320: Ethernet gateway module for supervisory SCADA link over TCP/IP

Power Supply Modules

• RCU201: 24 VDC regulated power supply module, 5 A, for RCU backplane distribution
• RCU202: Redundant power supply module with automatic switchover for continuous operation

Quality Control for the RCU Series Range

KONGSBERG RCU series modules incorporate proprietary backplane bus architectures and multi-layer PCB designs that require specialized test procedures beyond standard bench power-on verification. DriveKNMS applies the following test protocol to all RCU series units processed through its facility:

• Backplane Bus Integrity Test: Each module is seated in a Kongsberg-compatible test rack and subjected to full bus communication cycling to verify address recognition, data throughput, and error-free frame transmission.
• Channel-Level Functional Verification: For I/O modules, each individual channel is exercised across its full input/output range. Analog channels are verified at 0%, 25%, 50%, 75%, and 100% of rated span. Digital channels are cycled through open and closed states with contact resistance measurement.
• Communication Protocol Validation: Serial and Ethernet communication modules are tested against a reference Kongsberg controller to confirm correct protocol handshake, baud rate negotiation, and data integrity under simulated load.
• Thermal Cycling: Units intended for marine or offshore deployment are subjected to thermal cycling between -10°C and +60°C to identify latent solder joint or component failures.
• Visual and Component Inspection: All PCBs are inspected under magnification for corrosion, capacitor bulge, trace damage, and non-original component substitution prior to functional testing.