别名：3BHE032025R0101（物料号）、PCD235A101（型号）。

适配底座：TB840A（DIN 导轨或机架安装）

认证：CE、UL、cUL、ATEX Zone 2、IEC 61000-6-2/4

制造业：复杂设备控制、高级过程控制（APC）

ABB PCD235A101 (3BHE032025R0101) controller module

Conclusion (as of May 13, 2026):

Lifecycle: Active (in production, not discontinued), a high-performance communication/control module belonging to the ABB AC 800M/System 800xA platform, supplied normally by the original factory.

Alias: 3BHE03205R0101 (material number), PCD235A101 (model).

1、 Basic Information

Series: AC 800M (System 800xA DCS/PLC)/Unitrol Excitation Control Series

Type: Enhanced Communication Processor/Controller, Supporting Redundancy

Processor: Enhanced PowerPC architecture

Memory: 32 MB working memory+16 MB non-volatile storage

Adaptation base: TB840A (DIN rail or rack mounted)

2、 Key parameters

Communication interface:

2 x 10/100 Mbps Ethernet (RJ45)

2×RS-485（PROFIBUS DP/PA）

Supported protocols: PROFIBUS DP/PA, Modbus RTU/TCP, IEC 60870-5-104, HART transparent transmission

Working temperature: 0 ° C~+60 ° C (no condensation)

Protection level: IP20 (for use inside control cabinets)

Certification: CE, UL, cUL, ATEX Zone 2, IEC 61000-6-2/4

3、 Functions and Applications

Core functions:

Multi protocol fieldbus integration (PROFIBUS+Ethernet)

High speed data exchange and protocol conversion

Generator excitation control (Unitrol series)

Redundant control (dual machine hot standby)

Typical applications:

Electricity: Excitation system for power plants (REG670/REL670), substation control

Process industry: DCS systems for chemical, petroleum, and water treatment

Manufacturing industry: complex equipment control, advanced process control (APC)

4、 Discontinuation and Replacement

Status: In production (Active), no EOL announcement, original factory orders are normal.

Supply: Brand new original futures for 2-4 weeks, with sufficient domestic spot goods and stable prices.

Substitution relationship: There is no direct substitute model, PCD237A101 (with stronger performance) can be selected for upgrading within the same series