ABB DNP21-FBP Communication Function Module

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• 1. Product Overview

  The ABB DNP21-FBP Communication Function Module is a high-performance module for data communication in industrial automation and power systems. It supports the DNP3 (Distributed Network Protocol) for reliable information exchange between devices and higher-level systems. The module can be integrated into ABB protection relays, control devices, or remote terminal units (RTUs) to provide high-speed, stable communication interfaces for SCADA, DCS, or remote monitoring systems.

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  2. Technical Specifications

  Parameter	Specification
  Model	DNP21-FBP
  Type	Communication Function Module
  Supported Protocol	DNP3 (Serial / TCP/IP)
  Communication Interfaces	RS-232 / RS-485 / Ethernet (depending on configuration)
  Data Rate	9600 bps – 115.2 kbps (serial), 100 Mbps (Ethernet)
  Network Topology	Point-to-point, master/slave, multi-master/multi-slave (configurable)
  Supply Voltage	24 V DC
  Power Consumption	≤ 5 W
  Operating Temperature	-25 ℃ ~ +70 ℃
  Mounting	DIN rail or panel mounting
  Protection Rating	IP20
  Status Indicators	LEDs for power, communication, and fault
  Dimensions	120 × 80 × 50 mm (approx.)
  Functions	Data acquisition, transmission, protocol conversion, remote control, event logging

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  3. Key Features and Benefits

  • Reliable communication using DNP3 standard protocol

  • Flexible configuration with serial and Ethernet interfaces

  • High compatibility with ABB protection relays, PLCs, DCS, and SCADA systems

  • Clear LED indicators for power, communication, and fault status

  • Modular design with DIN rail or panel mounting for easy installation and maintenance

  • Supports remote monitoring, control, and event logging for smart grid and automation systems

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  4. Typical Applications

  • Power system remote communication and SCADA interfaces

  • Distribution automation and relay data transfer

  • Industrial automation system communication interface

  • Smart grid and remote monitoring systems

  • Control systems in water treatment, metallurgical, mining, and petrochemical industries

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  5. Installation & Usage Notes

  • Ensure a 24 V DC power supply is used to prevent overvoltage or undervoltage damage

  • Properly connect serial, Ethernet, and power lines according to the manual to avoid communication failure

  • Configure DNP3 protocol settings to match the SCADA or control system for correct data transfer

  • Install in environments free from high humidity, high temperature, dust, and strong electromagnetic interference

  • Regularly check LED indicators and terminal connections to maintain stable long-term communication

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The structure and details of the product：

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