Description

ABB NTCF22

ABB NTCF22 is a high-performance bi-directional optical-electrical conversion and communication termination unit for process automation. It belongs to the ABB Bailey Symphony Harmony INFI 90 and S+HR control system family. Its core role is to serve as the key component for optical/electrical signal conversion and link termination in the INFI‑Net high-speed redundant industrial network. It integrates five core capabilities: long-distance anti-interference transmission, lossless signal conversion, hot-swap compatibility, comprehensive diagnostics, and deep ecosystem adaptation. As a critical component for seamless interconnection between fiber-optic backbones and electrical interface modules in legacy DCS upgrades and new large-scale process control systems, it is widely used in continuous process industries such as power, petrochemical, metallurgy, paper, and cement. It is compatible with the INFI 90 Distributed Control System (DCS) and S+HR architecture, providing stable and interference-resistant communication channels for high-speed data exchange across cabinets and plants.

The core task of the unit is to implement bi-directional optical-electrical conversion for the INFI‑Net network: converting electrical signals output from the controller side into long-distance transmissible optical signals for transmission over fiber links; simultaneously receiving optical signals from the fiber, converting them back into system-recognizable electrical signals, and connecting them to CI-series communication interface modules and the main controller, enabling distributed data acquisition and control command issuance across the entire DCS network. It features link isolation and electromagnetic compatibility design, which effectively block common-mode interference and high-frequency inverter noise on the communication link. It is equipped with link status monitoring and fault alarm functions, which can detect optical power and link connectivity in real time and report abnormal status via the system bus, facilitating early troubleshooting of potential issues such as fiber breakage and interface contamination. It is deeply compatible with the ABB INFI 90 ecosystem and can be seamlessly integrated into INFI‑Net ring networks/buses, Symphony Harmony control cabinets, and S+HR expansion systems. It supports direct connection with prefabricated fiber cables and complies with IEC industrial communication standards, ensuring long-term stable operation in complex industrial environments with high temperature, high humidity, and strong vibration.

It adopts a compact industrial card-type modular design, installed on a standard INFI 90 cabinet base. The plug-in structure allows quick installation, replacement, and maintenance. It is equipped with clear LED status indicators that intuitively display power, optical transmit/receive, link communication, and fault status, enabling preliminary fault location without specialized tools. The housing is made of industrial-grade shielding material with excellent resistance to electromagnetic interference, dust, and moisture, suitable for harsh industrial environments. It supports online hot-swapping (in compliance with system safety procedures); replacing the unit does not affect the normal operation of other nodes on the same network, meeting the strict requirements of continuous process industries for minimum downtime.

1. Technical Specifications

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• Power Specifications: Industrial standard 24 VDC power supply with over-voltage, reverse-polarity, and overload protection; low power consumption suitable for long-term continuous operation; electrical isolation between the power circuit and signal/fiber circuit to suppress power-side interference from intruding into the communication link.

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• Optical-Electrical Conversion & Transmission: Bi-directional optical-electrical conversion, compatible with INFI‑Net dedicated fiber interfaces (mainly multi-mode, supporting corresponding wavelengths); optical power output/reception conforms to INFI 90 system specifications, supporting kilometer-level transmission distance (typically several kilometers for multi-mode fiber); signal transmission rate matches INFI‑Net high-speed network standards with no additional transmission delay; optical power threshold monitoring with automatic alarm when the value is below or above the threshold.

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• Communication & Compatibility: Native compatibility with INFI‑Net network protocol; seamless cooperation with various communication modules (such as CI series), operator stations, and engineer stations in the INFI 90 system; supports direct connection with prefabricated fiber cables to reduce on-site splicing work; compatible with S+HR system expansion architecture, applicable for communication link upgrade of legacy INFI 90 systems.

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• Environmental & Protection: Operating temperature range: 0°C to +60°C, storage temperature: -40°C to +85°C; industrial-grade electromagnetic interference immunity (EMI/EMS complies with IEC 61000); vibration and shock resistance meet industrial cabinet installation requirements; card-type sealed design with protection grade suitable for cabinet installation environment.
• Physical Specifications: Standard INFI 90 card size for dense arrangement in cabinets; weight approx. 2.1 kg; integrated standard mounting latches with no additional fasteners required.

2. Features

• Precise Bi-directional Optical-Electrical Conversion: Professional optical transceiver components ensure signal integrity and no packet loss during electrical/optical and optical/electrical conversion, maintaining data integrity even after long-distance transmission and solving electromagnetic interference issues in long-distance industrial communication.

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• Comprehensive Link Diagnostics: Real-time monitoring of optical power, power status, and link connectivity; local alarm via LED indicators in case of abnormality, and fault information reported to the DCS operator station through the system bus, supporting predictive maintenance.

• Hot-Swap & Fast Maintenance: Supports online hot-swapping without system shutdown (subject to system configuration permission); intuitive LED status indicators greatly shorten on-site troubleshooting time; prefabricated fiber interface eliminates on-site splicing and improves deployment efficiency.

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• Strong Anti-Interference & Electrical Isolation: Triple isolation of power, electrical signals, and fiber links effectively suppresses common-mode voltage and electromagnetic noise in industrial sites, preventing interference from affecting communication stability.
• Seamless Ecosystem Compatibility: Designed specifically for INFI 90 / Symphony Harmony and S+HR systems; accesses existing networks without additional gateways, making it an ideal component for fiber-optic upgrading of legacy DCS communication links.

3. Applications & Case Examples

• DCS Networks in Large Thermal / Nuclear Power Plants: Used in unit DCS for terminating INFI‑Net fiber links across main buildings and auxiliary control buildings, connecting regional control cabinets to the main control room, enabling high-speed data exchange for boiler, turbine, and electrical systems. Its anti-interference performance ensures stable communication in environments with high-voltage inverters and large motors.

• Petrochemical Complex Units: Applied in atmospheric and vacuum distillation, catalytic cracking, and other units in refineries for fiber communication between DCS cabinets, solving wired communication challenges in large-span, highly corrosive plant environments and supporting interlock control and data sharing between units.

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• Legacy DCS Upgrade & Retrofit: Upgrades original copper communication links to fiber links for aged INFI 90 systems. NTCF22 realizes optical-electrical conversion, improving communication speed and anti-interference capability, extending system life cycle and reducing maintenance costs.
• Paper / Cement Production Lines: Used for long-distance communication between workshops and main control rooms, avoiding dust and strong vibration on-site from affecting communication links, ensuring continuous control and real-time data monitoring of production lines.

4. Product Advantages

• Industrial-Grade Optical-Electrical Conversion: Conversion algorithm optimized for INFI‑Net maintains signal quality over long distances and solves anti-interference pain points in industrial long-distance communication.
• Comprehensive Diagnostics & Efficient O&M: Real-time link status monitoring + local/remote alarms and hot-swap design significantly reduce unplanned downtime.
• Plug-and-Play, Low Retrofit Cost: Accesses INFI 90 system directly without extra gateways or complex configuration, providing an economical solution for legacy system fiber-optic retrofits.
• Robust & Environmentally Resistant: Industrial-grade components and isolation design enable long-term stable operation in high-temperature, high-humidity, and strong electromagnetic interference environments.