Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Model Number | UAD155A0111 |
| Part Number | 3BHE029110R0111 |
| Product Type | Controller Board / AC 800PEC Combi I/O Box |
| Automation Platform | ABB AC 800PEC |
| Board Function | Combined I/O processing and control interface |
| Power Supply | 24 VDC control supply |
| Mounting | AC 800PEC cabinet/backplane installation |
| Communication | Internal AC 800PEC system communication |
| Signal Processing | Mixed analog and digital field signal handling |
| Typical Applications | Power electronics, excitation systems, industrial drive control |
| Product Weight | Approx. 2.947 kg |
| Lifecycle Status | Mature / limited availability |
Product Introduction
ABB UAD155A0111 3BHE029110R0111 Overview
The ABB UAD155A0111 (3BHE029110R0111) is an AC 800PEC Combi I/O controller board designed for high-performance industrial control applications. It provides field signal processing, interface management, and control functions inside ABB AC 800PEC architectures used in demanding automation and power conversion systems.
The module is typically maintained in legacy installations where AC 800PEC hardware continuity is important. For replacement projects, engineers should verify hardware revision, application firmware, I/O configuration, and cabinet wiring before installation because AC 800PEC systems are highly application-specific.

UAD155A0111 3BHE029110R0111
Application Scenarios & Field Pitfalls (The Engineer’s Perspective)
Engineering Pain Point
A common problem in power plants and industrial production facilities is a control cabinet failure on an older excitation or power conversion system where the original engineering files are incomplete. Replacing a controller board is rarely just a hardware exchange. The board revision, firmware package, parameter backup, and I/O mapping all affect startup results. The ABB UAD155A0111 3BHE029110R0111 is normally sourced when maintaining an existing AC 800PEC installation rather than redesigning the entire control architecture.
Typical Applications
- Power Generation – Excitation control systems for synchronous generators.
- Industrial Drives – Control cabinets for high-performance converter and motor control equipment.
- Renewable Energy Systems – Power electronic control platforms requiring precise I/O processing.
- Heavy Industry – Metallurgical and process equipment using ABB AC 800PEC controllers.
Technical Pitfalls to Avoid
- Firmware and Hardware Revision Mismatch
Older AC 800PEC installations may use application-specific firmware. Confirm the replacement board revision before commissioning.
- Incorrect I/O Parameter Restoration
The physical board may install correctly while incorrect channel configuration causes unexpected field behavior. Always restore verified parameter files.
- Cabinet Environment Issues
Check cabinet temperature, grounding, and power quality. Control boards exposed to excessive heat, electrical noise, or poor grounding often experience repeat failures.
Field note: Keep the original board label, firmware information, and connector wiring records before removal. Those details save hours during recommissioning.
Related Products
- ABB UAD155A0111 3BHE029110R0111
Main AC 800PEC Combi I/O controller board. Used for mixed signal processing and controller interface functions in existing AC 800PEC systems. - ABB UAD149A1501 3BHE014135R1501
AC 800PEC-related control module used in excitation and power control applications. Different hardware architecture; verify replacement compatibility. - ABB UAD149A0001 3BHE014135R0001
Expansion/output-related module for compatible ABB control configurations. Used when additional interface capacity is required. - ABB PPD517A3011 3BHE041576R3011
Processor/control module used in ABB excitation and industrial control systems. Typically applied as a higher-level controller rather than an I/O board. - ABB UCD240A101 3BHE022287R0101
AC 800PEC-related controller component. Applicable where CPU/control processing functions are required. - ABB UFC721AE 3BHE003041R0101
ABB industrial control module used in automation and power control environments. Application differs from AC 800PEC Combi I/O hardware. - ABB UDD406A 3BHE041465P201
ABB controller unit used in specialized industrial control systems. Requires system-level compatibility verification before substitution. - ABB AC 800PEC Controller Platform
High-performance ABB control platform used in power electronics, excitation, and demanding industrial automation applications. The UAD155A0111 belongs to this ecosystem.
