Description

Rolls-Royce RRDIO15 Marine Digital I/O Alarm Module Product Introduction
Brand: Rolls-Royce (Rolls-Royce Marine)
Model: RRDIO15
Product Name: Marine Digital I/O Alarm Module
Overall dimensions: 112 mm × 75 mm × 32 mm
Net weight: 0.20 kg
Place of origin: Germany
Operating temperature range: -20 °C to +60 °C
Storage temperature range: -40 °C to +85 °C
Nominal supply voltage: 24 VDC, allowable input range 18-30 VDC
Typical operating current: 0.12 A

RRDIO15

Maximum power consumption: 2.9 W
Main advantages and functional descriptions:
This marine-oriented I/O module provides multi-channel digital input and relay-type digital output channels for collecting binary signals such as equipment running status, trip feedback and safety interlock conditions. Dual CAN-bus communication ports (CAN1, CAN2) support field-bus data exchange with Rolls-Royce main marine controllers, transmitting alarm events, diagnostic messages and real-time status information to upper monitoring system. On-board logic processing executes local alarm judgment without fully relying on central controller resources, guaranteeing basic alarm response even under partial communication disturbance. Hardware supports galvanic isolation between field signal circuits and internal logic circuits, defending against ground loop interference, surge pulse and marine-environment electromagnetic noise. Built-in self-diagnosis continuously detects power supply anomaly, channel circuit faults and internal hardware failures, and reports corresponding fault codes through bus communication. LED indicator lights on module surface display power-on status, channel activity and communication running condition for fast on-site inspection. Compact DIN-rail mounting structure saves marine control cabinet space and supports quick installation and replacement. Its prominent advantages include strict marine-grade hardware design resisting vibration, dampness and salt-fog atmosphere on ships and offshore platforms; lightweight small-size layout adapting to limited cabinet space on-board; distributed local signal processing lowering central controller load; reliable CAN-bus redundant communication interface; complete channel-level fault diagnosis simplifying marine maintenance work. It serves as front-end signal acquisition unit of ship automation system, connecting field safety sensors and actuators with main control system, realizing equipment condition monitoring, fault alarm and local interlock control for marine auxiliary machinery and safety-related subsystems.

RRDIO15

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