Description
⚙️ Product Overview
The ABB UAD155A0111, part number 3BHE029110R0111, is an AC 800PEC Combi I/O Controller Board used in ABB power electronics control systems. ABB identifies UA D155 A0111 as the controller board for the AC 800PEC Combi IO Box. The unit is also listed in ABB PCS6000 documentation as a replaceable AC 800PEC Combi IO control component.

🔧 Key Features
• ABB UA D155 A0111 controller board
• Part number: 3BHE029110R0111
• AC 800PEC Combi I/O Box design
• Controller-board function for ABB power electronics systems
• Used within ABB medium-voltage drive and power-conversion architectures
• Compact industrial control hardware
• Suitable for maintenance, replacement and spare-parts inventory
• Exact hardware identification can be matched by both type designation and ABB product ID
📋 Technical Information
• Brand: ABB
• Model: UAD155A0111
• ABB Product ID: 3BHE029110R0111
• ABB Type Designation: UA D155 A0111
• Product Type: AC 800PEC Combi I/O Controller Board
• System: AC 800PEC
• Product Family: Combi IO Box
• Application: Power electronics / medium-voltage drive control
• Product Category: Controller Board
• Net Weight: approximately 2.947 kg according to ABB product data
⚡ Functional Description
The UAD155A0111 forms part of the AC 800PEC control architecture and provides the controller-board function within the Combi I/O Box. In an ABB drive or power-conversion system, the Combi I/O hardware serves as part of the interface between the control system and the associated power electronics.
This is not a complete MVAC drive. It is a control component intended to operate as part of the larger ABB AC 800PEC-based system.
🏭 Typical Applications
• ABB medium-voltage AC drive systems
• Power electronics control
• PCS6000-related installations
• Industrial motor drive systems
• Power conversion equipment
• Generator and electrical power applications
• Replacement and maintenance of existing AC 800PEC installations
🛠️ Installation & Replacement Notes
Before replacement, confirm all identification markings on the existing unit:
UAD155A0111
3BHE029110R0111
UA D155 A0111
The exact part number and hardware configuration should be matched before installation. ABB documentation lists this unit as a serialized AC 800PEC Combi IO component, so replacement should be carried out according to the maintenance procedure for the host system.
Before removing the original board, isolate the equipment and record connector positions, wiring and module location. After installation, verify the control-system configuration, communication/interface connections and system diagnostics before returning the drive to service.
🔍 Identification Guide
When searching for this component, use several identifiers because different suppliers may use different naming conventions:
ABB UAD155A0111
ABB UA D155 A0111
ABB 3BHE029110R0111
AC 800PEC Combi IO
AC 800PEC Combi I/O Controller Board
❓ FAQ
Q: What is UAD155A0111?
A: It is an ABB AC 800PEC Combi I/O Controller Board.
Q: What is the ABB part number?
A: 3BHE029110R0111.
Q: Is UAD155A0111 a complete AC drive?
A: No. It is a controller-board component used within the AC 800PEC Combi I/O architecture.
Q: Is it used with ABB medium-voltage drive systems?
A: Yes. The AC 800PEC platform is used in ABB power-electronics and drive-control architectures.
Q: Are other UAD155 variants automatically interchangeable?
A: No. Always compare the complete ABB product ID, type designation, hardware revision and system configuration before substitution.
📦 Maintenance & Spare-Parts Use
The UAD155A0111 is particularly relevant when maintaining existing ABB AC 800PEC installations where the original controller hardware must be replaced without changing the complete control architecture. Keeping a correctly identified spare can reduce troubleshooting and equipment downtime during maintenance.
