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ABB PCD232A 3BHE022293R0101 Product Technical File
I. Product Description
This module belongs to the ABB Unitrol 6000 series generator excitation control system. It is the core main control CPU module of the excitation regulator, integrating signal acquisition, AVR voltage regulation, reactive power control, system logic interlock, fault protection, and multi-link communication functions. It collects the voltage, current, and rotor excitation parameters at the collector end, calculates and outputs the thyristor trigger instructions. It works in conjunction with the GFD233A optical communication module and the KUC711AE power rectification unit to achieve stable regulation of the generator terminal voltage and reactive power, supporting a dual-channel redundant architecture. It is mainly used for replacing various station excitation control cabinets.
Key Technical Parameters
Order Model: PCD232A, Material Code: 3BHE022293R0101
Control Power Supply: DC24V Industrial DC Control Power Supply
Communication Interface: Fiber Optic High-Speed Bus, RS232, RS485, PROFIBUS-DP
Sampling Accuracy: Voltage and Current Analog Quantity Sampling Accuracy 0.2 Class
Operating Environment Temperature: 0℃～+55℃
Storage Temperature: -40℃～+85℃
Relative Humidity: 5%～95% RH, No Condensation
Protection Grade: IP20, Installed Only in Control Cabinet
Installation Method: Standard Rack Slot Installation, Supports Online Hot Swap
Panel Configuration: Power, Operation, Fault, Communication Status LED Indicators
Hardware Configuration: Large-capacity Flash Memory, Supports Fault Recording, Parameter Power-off Saving
Overall Net Weight: 0.235kg
Insulation Grade: Strong and Weak Electrical Isolation with 2000VAC Voltage Rating
Supports Dual-Channel Redundant Fault-Tolerant Operation, Automatic Fault-Free Switching
Product Performance
Built-in High-Precision AVR Voltage Regulation Algorithm, Capable of Constant Voltage, Constant Reactive Power, and Constant Power Factor Adjustment Modes, Suitable for Grid-Connected Operation Requirements
Integrated Over-Excitation, Under-Excitation, Over-Current, Loss of Magnetism, Low Frequency, Over-Pressure, System Disturbance, and Other Complete Excitation System Protection Logic
Supports Dual-Channel Hardware Redundancy Configuration, Can Switch to the Standby Channel in Millisecond Time When the Main Channel Fails, Avoiding Excitation System and Shutdown
Can Real-Time Collect Excitation Power Unit， On-site Switching Quantity， and Analog Quantity Signals， Upload Operating Data and Fault Events to the Power Plant DCS System
Supports Local Panel Debugging， Remote Parameter Setting on the Upper Computer， Fault Waveform Recording Storage， Facilitating Fault Traceability and Parameter Optimization
Compatible with Multiple Communication Protocols， Achieves Control Cabinet Internal Multi-Master Ring Network Networking Through the Fiber Module， Strong Anti-High Voltage Strong Electromagnetic Interference Resistance
Has System Self-Check， Channel Breakdown， Synchronization Signal Abnormality， Power Unit Fault Diagnosis and Local Sound and Light Alarm Upload Functions
Application Domains
Thermal Power Plants： Unitrol 6000 Series Static Excitation System Main Control Unit for Steam Turbine Generators
Hydroelectric Power Plants： Excitation Voltage Regulation， Reactive Power Stability Control Core Controller for Hydroelectric Generators
Gas， Biomass， and Waste-to-Energy Self-Provided Power Station Synchronous Generator Excitation Regulation Control
Metallurgy， Chemicals， Cement Industry Self-Provided Power Plant Generator Excitation System Renovation and Spare Parts Replacement
Pumped Storage Power Station， Distributed Large Grid-Connected Generator Excitation Dual-Channel Redundant Control System
List of Similar Series Models
PCD232A 3BHE022293R0101： Standard Version Excitation Main Control CPU Module
PCD235A： Excitation System I/O Expansion Main Control Module
PCD231A： Early Economical Single-Channel Excitation Control Module
PCD234A： High-End Large-Capacity Redundant Excitation Main Control Module
GFD233A： Compatible Fiber Redundant Communication Module
KUC711AE Series： Compatible Thyristor Power Rectification Unit
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