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PCD 235A 3BHE032025R0101 ‌控制模块

ABB PCD235A101(3BHE032025R0101)控制模块 它是 ABB Unitrol 励磁系统的核心 CIO 控制板(AC800PEC 平台)

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ABB PCD235A101(3BHE032025R0101)控制模块

  它是 ABB Unitrol 励磁系统的核心 CIO 控制板(AC800PEC 平台),用于发电机励磁调节 + I/O 接口 + 通信 + 安全联锁,是电厂励磁的 “神经中枢”。

PCD235A101 3BHE032025R0101. (1).jpg


一、型号与身份

  • 型号PCD235A101
  • 订货号3BHE032025R0101
  • 别名:PEC80‑CIO‑FU、励磁 CIO 板、励磁控制模块
  • 品牌 / 平台ABB / AC800PEC(Unitrol 励磁系统)
  • 用途10MW–1000MW 同步发电机励磁控制(火电 / 水电)

二、核心功能(四大合一)

  1. 励磁主控:AVR 电压调节、无功控制、PID 闭环、励磁限制与保护。
  2. I/O 枢纽:板载模拟 / 数字量,采集发电机电压 / 电流 / 温度,输出励磁触发与报警。
  3. 通信网关:连 DCS/PLC、上位机、励磁功率单元(PCD231)。
  4. 安全联锁:过励 / 欠励 / 失磁 / 过流保护、灭磁开关控制、故障诊断。

三、硬件规格

  • 处理器:AC800PEC 架构(FPGA+DSP),冗余设计。
  • 供电24VDC 冗余双输入,背板供电。
  • I/O(板载)
    • 模拟输入:8 路(0–10V/4–20mA)
    • 模拟输出:4 路(0–10V/4–20mA)
    • 数字输入:16 路(24VDC)
    • 数字输出:8 路(继电器 / 晶体管)
  • 通信接口
    • 以太网:2×10/100Mbps(Modbus TCP)
    • 串口:RS‑232/RS‑485(Modbus RTU)
    • 现场总线:Profibus‑DP、AF100
  • 环境‑25℃~+70℃,三防涂层,IP20
  • 尺寸 / 重量:约330×158×30mm / 0.35kg

四、与相近型号对比(ABB 励磁系列)

  • PCD235A101(3BHE032025R0101)励磁 CIO 主控 + I/O + 通信,全功能,Unitrol 核心。
  • PCD230励磁专用 CPU,侧重 AVR / 同步 / 保护,I/O 较少。
  • UFC921A101(3BHE024855R0101)传动 / 励磁通信主控,侧重 DCS 接口与功率单元控制。

五、典型应用

  • 火电 / 水电 / 核电发电机励磁系统(Unitrol 5000/6000)。
  • ABB AC800PEC 变频传动 + 励磁一体化控制
  • 电厂 DCS(800xA)与励磁系统接口与数据交换


ABB PCD235A101 (3BHE032025R0101) control module

It is the core CIO control board (AC800PEC platform) of ABB Unitrol excitation system, used for generator excitation regulation+I/O interface+communication+safety interlocking, and is the "nerve center" of power plant excitation.


PCD235A101 3BHE032025R0101. (1).jpg


1、 Model and Identity

Model: PCD235A101

Order number: 3BHE032025R0101

Alias: PEC80-CIO-FU, Excitation CIO Board, Excitation Control Module

Brand/Platform: ABB/AC800PEC (Unitrol Excitation System)

Purpose: Excitation control of 10MW-1000MW synchronous generators (thermal power/hydropower)

2、 Core functions (four in one)

Excitation main control: AVR voltage regulation, reactive power control, PID closed-loop, excitation limitation and protection.

I/O hub: onboard analog/digital quantity, collects generator voltage/current/temperature, outputs excitation trigger and alarm.

Communication gateway: connects DCS/PLC, upper computer, and excitation power unit (PCD231).

Safety interlock: over excitation/under excitation/demagnetization/overcurrent protection, demagnetization switch control, fault diagnosis.

3、 Hardware specifications

Processor: AC800PEC architecture (FPGA+DSP), redundant design.

Power supply: 24VDC redundant dual input, backplane power supply.

I/O (onboard):

Analog input: 8 channels (0-10V/4-20mA)

Analog output: 4 channels (0-10V/4-20mA)

Digital input: 16 channels (24VDC)

Digital output: 8 channels (relay/transistor)

Communication interface:

Ethernet: 2 × 10/100Mbps (Modbus TCP)

Serial port: RS-232/RS-485 (Modbus RTU)

Fieldbus: Profibus DP, AF100

Environment: -25 ℃~+70 ℃, with a three proof coating, IP20

Size/Weight: Approximately 330 × 158 × 30mm/0.35kg

4、 Comparison with similar models (ABB excitation series)

PCD235A101 (3BHE032025R0101): Excitation CIO main control+I/O+communication, fully functional, Unitrol core.

PCD230: Excitation dedicated CPU, focusing on AVR/synchronization/protection, with less I/O.

UFC921A101 (3BHE024855R0101): Transmission/excitation communication main control, focusing on DCS interface and power unit control.

5、 Typical applications

Excitation system for thermal/hydroelectric/nuclear power generators (Unitrol 5000/6000).

ABB AC800PEC variable frequency drive+excitation integrated control.

Interface and data exchange between power plant DCS (800xA) and excitation system.


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PP885 3BSE069276R1
DSDP140B
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