Description
NTRLO2A: Product Overview
The module operates within the network infrastructure layer of industrial automation systems, serving as a bridge between Ethernet-based control systems (e.g., ABB 800xA DCS, AC500 PLCs) and remote field devices or subsystems. Its primary role is to overcome the distance limitations of copper Ethernet cabling by converting electrical signals to optical signals for transmission over fiber optic cables, then regenerating the signal at the destination to restore signal strength and eliminate noise.
Core functionality includes automatic negotiation of data rates (10/100/1000 Mbps), signal amplification to compensate for attenuation over long distances, and electrical isolation between copper and fiber segments to protect against ground loops and transient surges. It handles IEEE 802.3-compliant Ethernet frames, supporting protocols such as PROFINET RT, EtherNet/IP, and Modbus TCP/IP without protocol-specific configuration.
The module belongs to the ABB NetWorks Series, a platform designed for industrial communication reliability. This series emphasizes modularity (supporting various media types), wide environmental tolerance, and seamless integration with ABB’s automation ecosystem. Benefits include reduced network downtime through robust signal regeneration, simplified installation with DIN-rail mounting, and compatibility with existing ABB control architectures.
ABB SDCS-CON4-COAT
NTRLO2A: Technical Specifications
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Model Number: NTRLO2A
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Manufacturer: ABB Ltd.
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Product Type: Industrial Ethernet Fiber Optic Repeater
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Power Supply: 24V DC (18–36V DC range, ±10%)
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Data Rate: 10/100/1000 Mbps (auto-negotiating)
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Fiber Type: Multi-mode (MMF, 62.5/125μm or 50/125μm); Single-mode (SMF, 9/125μm)
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Wavelength: 850nm (MMF), 1310nm (SMF)
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Transmission Distance: Up to 2km (MMF), up to 20km (SMF)
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Copper Ports: 2x RJ45 (10/100/1000BASE-T, IEEE 802.3)
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Fiber Ports: 2x SC duplex (MMF/SMF selectable via switch)
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Operating Temperature: -40°C to +70°C
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Protection Rating: IP20 (enclosure)
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Certifications: CE, UL (cULus Listed), RoHS, FCC Part 15 Class A
Core Features & Customer Value
The fiber optic interface provides inherent electromagnetic interference (EMI) immunity, which is critical in environments with high electrical noise, such as steel mills or mining operations. For engineers, this eliminates signal degradation caused by nearby motors or drives, ensuring reliable communication with remote I/O racks or cameras. The extended transmission distance (up to 20km with SMF) enables connectivity across large facilities like oil refineries or power plants, where centralized control rooms are distant from field equipment.
Automatic data rate negotiation simplifies deployment, as the module adapts to the speed of connected devices without manual configuration. This reduces setup time during system commissioning or retrofits. The 24V DC power input aligns with standard industrial power distribution, allowing integration with existing DC power supplies in control cabinets.
Electrical isolation between copper and fiber segments protects sensitive control systems from ground potential differences, a common issue in geographically dispersed installations. For maintenance teams, the module’s LED indicators (power, link status, activity) provide immediate visual feedback for troubleshooting, minimizing diagnostic effort.
ABB SDCS-CON4-COAT
Typical Applications
In oil and gas pipelines, the module extends Ethernet connectivity from a central control room to remote pumping stations located kilometers away, transmitting sensor data (pressure, flow) and control commands reliably over SMF fibers. At a steel mill, it connects overhead cranes (equipped with PLCs) to the main DCS via MMF fibers, resisting EMI from电弧炉 (electric arc furnaces).
For water treatment plants, it bridges the gap between the central SCADA system and distributed remote terminal units (RTUs) at distant reservoirs, ensuring continuous monitoring of water quality parameters. In mining, it links underground communication nodes to surface control centers, using SMF fibers to penetrate deep shafts while maintaining signal integrity.
