The Kongsberg RDi-32A is a high-density remote analog input module designed for integration within sophisticated vessel management and engine control systems. This module provides a reliable interface for collecting a wide range of analog signals from field sensors, converting them into digital data for processing across the automation network.

 

Product Overview

Built to withstand the rigorous conditions of maritime and offshore environments, the RDi-32A offers 32 individual channels for analog data acquisition. It is specifically engineered to work with the Kongsberg series of controllers, ensuring high-speed data sampling and exceptional signal accuracy. The module’s distributed nature allows for installation closer to the sensors, significantly reducing cabling costs and minimizing potential signal interference.

Technical Datasheet

General Specifications

• Product Name: Kongsberg RDi-32A
• Module Type: Remote Analog Input Module
• Input Channels: 32 Channels
• Input Signal Types: 4-20mA, 0-10V, and RTD (depending on configuration)
• Resolution: 16-bit A/D conversion
• Communication Interface: Redundant Fieldbus / Ethernet
• Isolation: Galvanic isolation between field and logic
• Operating Temperature: -15°C to +70°C
• Humidity: Up to 96% non-condensing
• Dimensions: 160mm x 125mm x 60mm
• Weight: 1.10 kg
• Country of Origin: Norway

 

Application Fields

• Vessel Management Systems (VMS): Monitoring tank levels, pressures, and temperatures across the ship.
• Engine Monitoring: Tracking exhaust gas temperatures, oil pressures, and cooling water status.
• Cargo Control: Precise data acquisition for LNG/LPG cargo handling and monitoring.
• Ballast Water Systems: Automating the monitoring of pumps and valves based on real-time analog feedback.

 

Product Instructions

• Installation: Secure the module to a standard rail inside an IP-rated cabinet. Ensure the earthing terminal is properly connected to the ship’s common ground to prevent electrical noise.
• Wiring: Connect sensor leads to the terminal blocks according to the pin-out diagram. For long-distance cable runs, the use of shielded cables is mandatory to maintain data integrity.
• Configuration: Use the system software to define the input range (e.g., 4-20mA) for each channel. The Kongsberg RDi-32A supports software-based scaling and filtering.
• Status Monitoring: Observe the front-panel LEDs for diagnostic information. A steady green light indicates normal operation, while amber or red lights indicate communication errors or hardware faults.

 

Q&A: Frequently Asked Questions

• Q: Can the RDi-32A handle different types of signals simultaneously?
  • A: Yes, the 32 channels can often be grouped or individually configured to handle various standard analog signals like current or voltage.
• Q: Is the module protected against power surges?
  • A: The unit includes built-in surge protection and galvanic isolation to protect the internal circuitry from spikes originating in the field wiring.
• Q: Does it require a specific power supply?
  • A: It is designed to operate on a standard 24V DC marine power supply, typically allowing for a wide voltage tolerance range.
• Q: What happens if the communication line is severed?
  • A: The module supports redundant communication ports. If one line fails, it automatically switches to the backup line without interrupting the data flow.

 

Recommended Similar Models

• Kongsberg RDi-16A (16-Channel Version)
• Kongsberg RDo-16 (Remote Digital Output Module)
• Kongsberg AIM-7 Analog Input Interface
• Kongsberg RIO-211 Marine I/O Unit
• Kongsberg K-Chief 600 Distributed I/O Node