The Kongsberg RDi-32-xe is a high-density Remote Digital Input module engineered for use within integrated automation systems, particularly in marine and offshore environments. It serves as a critical interface for collecting status signals from various field devices—such as switches, limit sensors, and relay contacts—and transmitting that data to a central processing unit. Designed for durability and precision, the RDi-32-xe ensures reliable signal processing even in conditions with high vibration and electromagnetic interference.

 

Technical Datasheet

• Product Name: Kongsberg RDi-32-xe Remote Digital Input Module
• Model Keyword: RDi-32-xe
• Input Channels: 32 Digital Inputs (Isolated)
• Input Voltage: 24V DC (Nominal)
• Scanning Frequency: 1 ms to 10 ms (Configurable)
• Communication Interface: Dual Redundant CAN bus / Ethernet (System dependent)
• Dimensions: 165mm x 110mm x 45mm
• Weight: 0.65 kg
• Country of Origin: Norway
• Protection Class: IP20
• Operating Temperature: -15°C to +70°C

Application Areas

The RDi-32-xe is a versatile module used extensively in high-stakes monitoring environments. Key applications include:

• Engine Monitoring Systems: Collecting status data from temperature switches, oil pressure sensors, and fuel levels.
• Hull & Cargo Monitoring: Monitoring watertight doors, bilge levels, and valve positions across the vessel.
• Power Management Systems (PMS): Interfacing with circuit breaker auxiliary contacts and generator status signals.
• Safety Systems: Integrating fire damper status and emergency stop button feedback into the main control logic.

 

Operating Instructions

1. Mounting: Install the module onto a standard TS35 DIN rail within a protected enclosure or control cabinet. Ensure sufficient ventilation space is provided around the module to maintain optimal operating temperatures.
2. Field Wiring: Connect digital input cables to the terminal blocks. The RDi-32-xe supports both dry contact and powered signal inputs; ensure the common ground or return line is correctly connected according to the system wiring diagram.
3. Network Integration: Connect the module to the automation network using shielded cables. For redundant systems, utilize both communication ports to ensure continuous data flow in the event of a cable failure.
4. Addressing: Configure the module’s unique ID using the hardware switches or the system’s software configuration tool. The central controller must recognize the specific address to map the 32 input points correctly.
5. Status Check: Monitor the onboard LEDs. A steady “Run” or “Power” LED indicates the unit is operational, while individual channel LEDs blink or stay lit to indicate the real-time status of each digital input.

 

Q&A: Frequently Asked Questions

Does the RDi-32-xe support signal filtering? Yes, the module includes programmable digital filters for each input channel. This helps eliminate “chatter” or noise from mechanical switches, ensuring that only valid state changes are reported to the controller.

What happens if communication with the main controller is lost? The RDi-32-xe is designed to maintain its last known state and will attempt to re-establish the connection automatically. The central system will typically trigger a “Communication Failure” alarm if the module goes offline.

Are the inputs galvanicly isolated? Yes, the inputs are isolated from the internal logic and communication circuits. This protects the module and the wider network from ground loops and external electrical surges.

Can this module be used in hazardous areas? While the RDi-32-xe is built to marine standards, it should be installed within a suitable IP-rated or Ex-rated enclosure if it is to be located in a Zone 1 or Zone 2 hazardous environment.

 

Similar Model Recommendations

• Kongsberg RDO-16-xe (Remote Digital Output Module)
• Kongsberg RAI-16-xe (Remote Analog Input Module)
• Kongsberg RDI-16 (16-Channel Standard Module)
• Kongsberg MPC-32 Multi-Purpose Controller
• Kongsberg RIO-32 Remote I/O Unit