Description
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BrandABB
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ModelPCD235B1101
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Product NamePEC80‑CIO Central Input‑Output Module
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Place of OriginSwitzerland
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HS Code8537101190
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Dimensions373 mm × 73.5 mm × 142 mm
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Weight0.98 kg
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Operating Temperature-25℃ to +70℃
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Storage Temperature-40℃ to +85℃
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Part Number3BHE032025R0101
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Warranty12 month
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Product StatusNew and original
ABB PCD235B1101, 3BHE032025R0101
Core control board based on the AC800PEC platform for ABB UNITROL 5000 / 6000 generator excitation systems.
Product Positioning
Synchronous generator static excitation main controller, implemented with high-speed CPU and FPGA co-processing hardware.
Key Functions
Delivers Automatic Voltage Regulator (AVR) and Field Current Regulator (FCR) closed-loop control, enabling bumpless mode transition between automatic and manual excitation control.
Supports constant reactive power and constant power factor regulation; integrates Power System Stabilizer (PSS) to suppress grid power oscillations.
Embedded full-set limiting and protection functions: Over-Excitation Limiter (OEL), Under-Excitation Limiter (UEL), V/Hz limiter, stator current limit, PT fuse failure monitoring, loss-of-excitation protection and excitation overcurrent protection.
High-speed optical fiber links provide synchronous communication to power rectifier assemblies, with a control cycle below 1 ms.
On-board analog input acquisition for generator voltage, current and excitation circuit measurements.
Stores event records and fault history; redundant hardware setup permits bumpless channel switchover during fault conditions.
Interfaces via Modbus-TCP and Profibus-DP for integration with plant supervisory controls and local HMI panels.
Executes unit start-stop sequence logic, onboard diagnostic test sequences and soft field-flashing operations.
Advantages of ABB PCD235B1101, 3BHE032025R0101
Adopts high-performance CPU-FPGA heterogeneous co-processing architecture. With a control cycle below 1 ms, it achieves high-accuracy excitation regulation for synchronous generators.
Full hot-standby redundancy is supported. Bumpless channel switchover occurs during hardware failures to optimize system uptime for key power-generation assets.
Integrated complete limiters and protection complying with major grid specifications. The standard-based PSS suppresses grid oscillations and enhances overall power-system stability.
High-speed fiber-optic interfaces realize deterministic synchronization with power rectifier units, offering superior electromagnetic noise immunity for demanding plant operating conditions.
Comprehensive on-board analog measurement together with full event and fault logging provides abundant diagnostic information, streamlining commissioning, field troubleshooting and post-incident root-cause investigation.
Multi-protocol connectivity including Modbus-TCP and Profibus-DP allows smooth interfacing with plant DCS, SCADA supervisory systems and local HMI units.
Pre-validated excitation control algorithms minimize on-site parameter tuning effort and accelerate commissioning for hydro, thermal and gas-turbine generator applications.
Well-proven hardware for UNITROL 5000 / 6000 static excitation systems. It features long operational lifespan, extensive worldwide installed base and complete ABB lifecycle maintenance services.
