Description
Product Overview
The KONGSBERG RCU500 is a Remote Controller Unit designed for distributed control and automation applications. It combines processing, serial communication, Ethernet, CAN, Profibus, and SPBus interfaces in a single industrial controller platform.
The RCU500 uses a PowerPC 8245 processor running at 400 MHz, with 32 MB SDRAM and 16 MB Flash memory. Its interface structure allows it to communicate with multiple field devices and control-system components, making it suitable for demanding marine and industrial automation environments. Kongsberg’s product documentation identifies Article Number 602265 specifically as the RCU500.
The unit is particularly associated with Kongsberg control and automation systems where distributed processing and multiple communication interfaces are required. RCU500 units are also listed in marine dynamic-positioning system equipment inventories.

Key Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | KONGSBERG |
| Model | RCU500 |
| Article Number | 602265 |
| Product Type | Remote Controller Unit |
| CPU | PowerPC 8245 |
| CPU Speed | 400 MHz |
| SDRAM | 32 MB |
| Flash Memory | 16 MB |
| Input Voltage | 24 VDC ±20% |
| Supply Range | 10–28.8 VDC |
| Maximum Power Consumption | 20 W |
| Ethernet | 2 × 10/100 Mbps |
| CAN Bus | 2 × CAN, up to 1 Mbps |
| Profibus | 2 × Profibus, up to 12 Mbps |
| SPBus | 1 × RS-485 SPBus |
| Serial Interfaces | 12 × RS-232/422/485 |
| Isolated Serial Interfaces | 4 × RS-232/422/485 |
| Digital Inputs | 4 × DI |
| Digital Outputs | 4 × DO |
| Protection Rating | IP20 |
| Operating Temperature | 0°C to 70°C |
| Storage Temperature | -25°C to 70°C |
| Operating Humidity | Up to 98% RH |
| Dimensions | 355 × 158 × 87 mm |
| Weight | 1.35 kg |
| SPBus Isolation | 500 V, optocoupler |
| eBay Condition | Used |
| Seller Note | “In good condition” |
The technical values above are taken primarily from Kongsberg’s RCU500 product documentation.
Communication and Control Interfaces
One of the useful features of the RCU500 is its combination of several communication standards.
The controller provides two 10/100 Mbps Ethernet interfaces, two CAN interfaces, two Profibus interfaces, and one SPBus connection. The serial interface section includes twelve RS-232/422/485 channels plus four isolated serial channels. This gives the RCU500 considerable flexibility when it is connected to different control-system components or distributed equipment.
The SPBus uses RS-485 physical communication with multidrop capability and optocoupler isolation. The official documentation specifies a maximum SPBus frequency of 2 MHz.
Typical Applications
The RCU500 is suited to industrial and marine automation systems where a compact controller needs to handle several communication interfaces at the same time.
Typical application areas include:
- Marine automation systems
- Dynamic positioning-related control systems
- Distributed control architectures
- Shipboard monitoring and control
- Industrial process-control equipment
- Multi-interface automation systems
- Remote I/O and controller communication
The RCU500 is also listed among equipment used in Kongsberg marine dynamic-positioning system configurations.
Installation and Replacement Notes
When replacing an existing RCU500, the article number alone should not be the only item checked. RCU500 units can appear with different hardware revisions, and other RCU500 article numbers such as 603108 are also found in Kongsberg system inventories.
Before installation:
- Record the complete part/article number from the existing controller.
- Check the hardware revision and connector arrangement.
- Confirm the required 24 VDC supply.
- Inspect Ethernet, CAN, Profibus, serial, and SPBus connections.
- Verify the system configuration and controller software requirements.
- Check the cabinet temperature and ventilation conditions.
- Restore the original communication and I/O configuration.
- After startup, verify controller status LEDs and communication with connected equipment.
Do not substitute another RCU-series controller solely because it has a similar appearance or name. The interface configuration and system firmware can differ between models.
Maintenance and Troubleshooting
Keep the RCU500 installed in a clean, dry cabinet with adequate ventilation. Because the unit is rated IP20, it should be protected from direct exposure to water, condensation, conductive dust, and other contaminants.
For troubleshooting, start with the power supply and status indicators before replacing the controller. If communication is lost on only one network, inspect that network’s cable, connector, termination, and configuration first. If several interfaces fail simultaneously, check the controller’s power supply and overall system status.
For a replacement unit, it is also good practice to record the existing configuration before removing the original controller. This makes it easier to restore communication parameters and reduce commissioning time.
Condition
The referenced eBay listing identifies this RCU500 602265 as Used, with the seller note “In good condition.” It should therefore be described as a used unit rather than new or new surplus.
Buyers should compare the label, article number, hardware revision, connectors, and physical configuration with their existing Kongsberg system before ordering.
Short eBay Title
KONGSBERG RCU500 602265 | Remote Controller Unit
中文简短标题
KONGSBERG RCU500 602265 | 远程控制器单元
