Brief Product Description

ABB PCD230A, part number 3BHE022291R0101, also named PEC80-CCM, is a core communication, I/O and measurement interface module for ABB AC800PEC platform and UNITROL 6000 / UNITROL 6800 generator excitation system. It acts as the data bridge between excitation main controller, power rectifier unit, local I/O and upper DCS/SCADA system. It collects generator voltage, current, field signals, performs signal conditioning and protocol conversion, supports multi-channel high-speed real-time data interaction. This is an obsolete legacy spare part, no new original production, only surplus and fully refurbished tested modules available for existing power plant excitation cabinet maintenance and replacement.

Product Number: 3BHE022291R0101

Catalogue Description: PC D230A: PEC80-CCM

Detailed description: PC D230A: PEC80-CCM

Product net depth: 142mm

Product clear height: 373mm

Net weight of the product: 1.53kg

Product net width: 73.5mm

Product application type :Undefined

Core Product Functions

• PEC80-CCM communication control & measurement module for UNITROL 6000/6800 excitation system
• Real-time acquisition of generator stator voltage, stator current, field current and pulse feedback signals
• Multi-port Ethernet switch, support Modbus RTU, Profibus DP, RS232 communication interface for DCS interconnection
• Local digital & analog I/O signal processing, isolation and fault diagnosis
• Transmit excitation running status, alarm, fault codes to HMI and upper monitoring system
• Receive remote AVR adjustment commands, synchronize control data with excitation main processor
• Hot-swap capable, plug-in rack installation inside excitation cubicle
• Wide 24VDC redundant power supply input (9~36VDC), low power consumption

• Conformal coated PCB, anti-interference design for high EMI excitation cabinet environment

Application Scenarios

• Thermal power, hydropower station UNITROL 6000 / UNITROL 6800 generator excitation cabinet
• Synchronous generator AVR automatic voltage regulation closed-loop control system
• AC800PEC high-speed control platform for rotating machinery control
• Power plant excitation retrofit, overhaul and spare parts replacement project

• Data interaction between excitation system and plant DCS, SCADA, relay protection system

FAQ (Frequently Asked Questions)

• Q: Communication failure after replacing PCD230A 3BHE022291R0101?
  A: Check 24V power supply, backplane connector, Ethernet cable, Profibus address, firmware version matching, excitation configuration download consistency.
• Q: Can PCD230A be used for Unitrol 5000 excitation system?
  A: No, it is exclusive for Unitrol 6000/6800 AC800PEC platform, incompatible with Unitrol 5000 hardware (UAA326A04 series).
• Q: What is the difference between PCD230A and PCD231?
  A: PCD231 is upgraded version with more I/O channels and enhanced communication bandwidth, not fully pin-to-pin compatible with PCD230A.
• Q: Is ABB PCD230A 3BHE022291R0101 available for new excitation projects?
  A: End-of-life legacy component, no new original production. Recommend latest Unitrol 7000 excitation system. Only surplus/refurbished tested spares for existing units.
• Q: Common failure modes?
  A: Ethernet port damage, communication chip aging, electrolytic capacitor failure, signal sampling circuit drift, backplane gold finger oxidation, surge damage from thyristor switching.

Related Model: ABB UFC760BE143 3BHE004573R0143

ABB UFC760BE143 (3BHE004573R0143) is a matching pulse trigger and power interface board for Unitrol 6000 excitation system. It receives firing pulse commands from PCD230A, drives thyristor rectifier bridge, collects power unit temperature and fault feedback. It is the core power interface board cooperating with PCD230A to complete generator excitation regulation. Also EOL, only refurbished spare parts for Unitrol 6000 cabinet maintenance.