Note; All products on this site are special products, the market price has been fluctuating, the specific customer service offer shall prevail, because the product is a new product, the picture is not a real shot, please confirm with customer service before placing an order model and product, price and other details, the site used, new are for sale, please contact customer service communication. GFD233A PEC80-LIN LIN Board (Order No.: 3BHE022294R0103) is a core control module in the ABB UNITROL series excitation systems, mainly used for the precise control and real-time monitoring of synchronous generator excitation systems. By regulating the generator rotor excitation current, it ensures the stability of the generator terminal voltage, optimizes reactive power distribution, and enhances the stability and reliability of power system operation. It is suitable for various power generation scenarios such as thermal power, hydropower and gas turbine power generation, and can be seamlessly integrated into the ABB PEC80 controller and related DCS systems. Equipped with high-performance control algorithms, a comprehensive protection mechanism and flexible communication capabilities, it can operate stably for a long time in harsh industrial environments, and is a key device in the field of modern power automation.
Parameters and Hardware Configuration
Basic Parameters
Model: GFD233A (functional model), 3BHE022294R0103 (general part number);
Product Name: PEC80-LIN LIN Board;
Corresponding System: ABB UNITROL excitation system, compatible with PEC80 controller;
Processor: Equipped with a high-performance microprocessor integrated with multi-channel A/D converters, supporting high-speed data acquisition and real-time operation;
Power Input: Normally 220VAC or 110VDC, adapted to industrial standard power supply environments;
Operating Temperature: -25℃~+70℃, meeting the temperature requirements of harsh industrial sites.
Core Hardware Composition
Control Core: Adopts advanced microprocessing chips with multi-task processing capabilities, which can rapidly execute excitation control algorithms, logic judgment and fault diagnosis programs with a millisecond-level response time, ensuring the real-time performance of excitation regulation.Signal Acquisition Module: Capable of collecting key analog signals including generator terminal voltage, stator current, excitation voltage and excitation current. The signals are sent to the processor after shaping, filtering, sampling and holding, providing accurate data support for control decision-making.PEC80-LIN LIN Board: Served as a communication expansion board, it is responsible for LIN bus communication between the module, PEC80 controller and other peripherals, supporting data interaction and instruction transmission to realize efficient linkage between the control layer and field device layer. It is also compatible with ABB proprietary communication protocols and industry universal protocols.Protection Circuit: Integrates multiple hardware protection circuits against overcurrent, overvoltage, undervoltage, overtemperature and excitation winding short circuit. Combined with the software protection mechanism, it can quickly cut off the excitation circuit or send out an alarm signal when a fault occurs, avoiding equipment damage and system crash.
Main Functional Features
Precise Excitation Control: Equipped with an advanced PID control algorithm and adaptive regulation technology, it can dynamically adjust excitation parameters according to the generator's operating conditions and automatically maintain the stability of the generator terminal voltage. It responds rapidly to grid load fluctuations, fault disturbances and other scenarios, suppresses voltage deviations, and improves the transient and steady-state stability of the system. It also supports multiple control modes including manual/auto switching, constant voltage, constant reactive power and constant power factor, adapting to different operational requirements.
Comprehensive Protection Mechanism: In addition to hardware protection, it is equipped with software-level fault diagnosis and location functions, which can real-time monitor the operating status of the module itself and the excitation system, record fault data and upload it to the upper computer, support fault early warning and predictive maintenance, and reduce the risk of shutdown. The protection functions cover excitation overcurrent, underexcitation limitation, overexcitation limitation, V/Hz limitation, etc., fully covering common fault types of the excitation system.
Flexible Communication Capability: LIN bus communication is realized via the GF D233 PEC80-LIN LIN board, and it also supports general industrial protocols such as Modbus and Profibus. It enables data interaction with SCADA systems, DCS systems and upper computers, supports remote monitoring, parameter configuration and program upgrade, facilitating the centralized management and automatic control of power systems.
High-Reliability Design: The module adopts industrial-grade components and has undergone rigorous anti-interference, anti-vibration and aging tests, with dustproof, moistureproof and anti-electromagnetic interference capabilities. Redundant design is optional to ensure stable operation even under extreme working conditions. It features a long Mean Time Between Failures (MTBF) and reduces operation and maintenance costs.
Application Scenarios and System Compatibility
Application Fields: Widely applied to the excitation systems of synchronous generators in various power stations including thermal power, hydropower, nuclear power and new energy power stations. It is also suitable for industrial captive power plants, distributed energy systems and grid peak-shaving power stations, facilitating the efficient and stable operation of generators.
System Compatibility: Realizes seamless integration with ABB PEC80 controllers, Symphony Plus DCS systems and other equipment, and is also adaptable to third-party monitoring systems. It supports interconnection and intercommunication with PLC, HMI and other devices, meeting the integration requirements of different automation systems.
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