ABB PCD235A101 3BHE032025R0101 Exciter Control Module in stock
ABB PCD235A101 (3BHE032025R0101) is a high-performance exciter control module for ABB AC800PEC and UNITROL generator excitation systems. It collects generator voltage and current signals, executes excitation regulation algorithms and delivers pulse control signals for the power bridge.
This module integrates multi-channel I/O and multiple industrial communication interfaces, with built-in comprehensive fault diagnosis and event recording. It is discontinued legacy spare part, widely used for maintenance replacement of power plant excitation control cabinets.
Main Specifications
| Item | Parameter |
| [1] Brand | ABB |
| [2] Model | PCD235A101 3BHE032025R0101 |
| [3] Product Type | Exciter Control Module |
| [4] Series | AC800PEC / UNITROL Excitation System |
| [5] Communication | Modbus TCP, PROFIBUS DP, Backplane bus |
| [6] Function Algorithm | AVR automatic voltage regulation, excitation limit control |
| [7] Mounting | Rack-mounted inside excitation cabinet |
| [8] Enclosure Rating | IP20 |
| [9] Operating Temp | 0℃ ~ +60℃ |
| [10] Power Supply | 24VDC |
Core Functions
| Function | Description |
| [1] Generator Excitation Regulation | Real-time adjust excitation pulse to stabilize generator terminal voltage. |
| [2] Multi-Protection Logic | Overexcitation, underexcitation and current limiting protection for generator safety. |
| [3] Multi-protocol Communication | Exchange data via Modbus TCP and PROFIBUS DP with upper control system. |
| [4] Signal Sampling & Processing | Collect generator voltage/current analog signals for closed-loop calculation. |
| [5] Fault Event Recording | Record operating parameters and fault logs for post-event analysis. |
Application Scenarios
| Industry | Usage |
| [1] Thermal Power Plant | Synchronous generator excitation control for coal-fired power generating units. |
| [2] Hydropower Station | Hydro generator voltage regulation and excitation protection control system. |
| [3] Combined Cycle Power | Gas turbine generator excitation and grid connection control system. |
| [4] Legacy System Maintenance | Spare replacement for aging ABB UNITROL / AC800PEC excitation racks. |
FAQ
| Question | Answer |
| [1] What is ABB PCD235A101 3BHE032025R0101? | It is exciter control module for ABB AC800PEC and UNITROL generator excitation systems. |
| [2] What is its core function? | Real-time automatic voltage regulation and excitation protection for synchronous generators. |
| [3] What communication protocols are supported? | Modbus TCP, PROFIBUS DP and rack backplane bus communication. |
| [4] Is it obsolete spare part? | Yes, it is legacy spare for maintenance of old UNITROL excitation control cabinets. |
