KONGSBERG RDI-32 Remote Digital Input Module

Product Description

RDI-32 is Kongsberg high-density remote digital input module for marine distributed automation DPU (Distributed Processing Unit) system. It provides 32 channels digital discrete signal acquisition, used to collect dry contact or active 24VDC/AC switch status from ship field devices. Powered by 18–32VDC, it communicates with main controller via redundant CAN bus, supports signal time stamping, self-diagnosis and alarm functions. Adopts marine-grade hardware design, compliant with IEC 60945 and IACS E10 marine standards, with strong resistance to vibration, humidity and salt fog, DIN rail mounting for cabinet installation. There are two variants: RDi-32xe for dry contact input, RDi-32Axe for active AC/DC signals.

Key Functions

• 32-channel digital discrete input, each channel equipped with LED status indicator
• Redundant CANopen fieldbus communication, ensures reliable data transmission
• Signal time stamping, event logging and alarm block function
• Built-in comprehensive self-check, watchdog monitoring and fault diagnosis
• Support remote parameter configuration, no on-board jumpers or trim pots
• Overload protection for sensor excitation power, reverse power polarity protection
• Marine anti-vibration, anti-humidity and salt-fog resistant design

Application Scenarios

• Ship bridge alarm monitoring system, BWMS bridge watch monitoring
• Vessel engine room monitoring and auxiliary machinery status collection
• Offshore platform automation and safety monitoring system
• Ballast control, cargo monitoring and fire/gas detection signal acquisition
• Kongsberg marine DPU distributed remote I/O cabinets

FAQ

Q1: What are the two versions of RDI-32?
A1: RDi-32xe for dry contact switch input; RDi-32Axe for active 24VDC or 50–70Hz AC input signals.

Q2: What communication bus does it use?
A2: Redundant CANopen 4.0 high-speed fieldbus.

Q3: What is the power supply range?
A3: 18VDC to 32VDC, typical 24V marine power supply.

Q4: What are common faults?
A4: Loss of CAN communication, individual channel no status change, module power failure, watchdog alarm.