ABB PCD235A101 3BHE032025R0101 Combined Input Output Module

Technical Specifications

Model: PCD235A101

Part Number: 3BHE032025R0101

Brand: ABB

Product Type: Combined input‑output module

Matching System: ABB AC800PEC control platform, UNITROL6000 generator excitation system

Power Supply: Dual redundant 24VDC power input, 20‑28VDC

Power Consumption: Max 2A

Analog Input: 3 channels, ±10V or ±20mA

Analog Output: 3 channels, ±10V

Digital Input: 12 channels, 24V / 48V compatible

Relay Output: 16 relay output channels

Temperature Interface: 3 channels for PT100 or PTC sensor

Communication Interface: RS‑485, optical fiber link interface

Installation Method: Standard rack plug‑in installation

Operating Temperature: -25℃ ~ +70℃, non‑condensing

Protection Class: IP20

Weight: 1.53kg

Dimension: 373mm × 142mm × 73.5mm

Compatible System: ABB AC800PEC, UNITROL6000 series excitation system

Core Function: Collect analog, digital and temperature signals of excitation system, output control and relay signals, support system redundant configuration, complete signal interaction for generator excitation closed‑loop regulation.

Product Details

The PCD235A101 3BHE032025R0101 is high‑performance combined input‑output module for ABB AC800PEC and UNITROL6000 excitation system.

This PCD235A101 module integrates rich analog, digital, relay and temperature measurement I/O resources, supports dual‑module redundant operation for excitation system.

It collects generator voltage, current, switch status and equipment temperature signals, outputs control drive signals for excitation regulator through internal backplane and optical link.

Dual redundant power supply design improves operation stability, optical fiber link ensures high‑speed and anti‑interference data transmission inside excitation cabinet.

Front‑panel LED indicators display power‑on status, channel state and communication link running condition.

Built‑in independent watchdog and hardware self‑diagnosis function can detect channel over‑range, signal loss and module hardware failure, fault alarm signals can be uploaded to upper monitoring system.

Industrial‑grade circuit design adapts to harsh electromagnetic environment of power plant cabinet.

Adopt standard rack plug‑in installation. Widely applied in thermal power and hydropower large‑generator excitation projects.

It is important spare hardware for UNITROL6000 system renovation, signal channel debugging and defective PCD235A101 module replacement.