Description
ABB UAD215A105 3BHE026284R0105
Product Introduction
The ABB UAD215A105 3BHE026284R0105 is a Converter Signal Interface (CSI) board used in ABB UNITROL 6000 excitation and converter-control equipment. ABB’s spare-parts documentation identifies the exact order number 3BHE026284R0105 as UA D215 A105 30V, 1000V, with the description “CSI Converter Signal Interface for UNL14300.” This makes the board part of the signal-interface layer between the converter hardware and the higher-level control electronics rather than a conventional PLC analog or digital I/O module.
The ABB UA D215 A105 belongs to a defined family of UA D215 converter signal interfaces. ABB lists A101 as a 15 V / 500 V version, A102 as 15 V / 1000 V, A104 as 30 V / 500 V, A105 as 30 V / 1000 V, and A106 as 30 V / 1500 V. These distinctions are important during replacement because the boards are not interchangeable simply because they share the UA D215 designation. The A105 variant is specifically associated with UNL14300 applications in ABB’s documentation.
From an engineering and procurement standpoint, ABB UAD215A105 3BHE026284R0105 should therefore be ordered against the complete identification rather than described only as an “ABB converter board.” Secondary listings sometimes classify the item as a converter signal board, signal interface converter, or general control I/O board, but those descriptions do not capture the specific UNITROL 6000 / UNL14300 application.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | UA D215 A105 / UAD215A105 |
| Manufacturer | ABB |
| Part Number | 3BHE026284R0105 |
| Product Type | CSI Converter Signal Interface |
| Product Family | UNITROL 6000 |
| Associated System | UNL14300 |
| Configuration | 30 V / 1000 V |
| Primary Function | Converter signal interface |
| Application | Excitation / converter control system |
| Board Type | Internal control-system interface board |
| Installation | ABB excitation/converter cabinet or rack |
| Related Version | UA D215 A101, A102, A104, A106 |
| Communication Interface | System-dependent internal interface; exact external protocol not established |
| Operating Temperature | Verify against the applicable UNITROL 6000/UNL14300 cabinet documentation |
| Protection Rating | Not specified for the standalone PCB |
| Accuracy | System- and measurement-path dependent |
| Supply Voltage | Do not infer from the 30 V designation; verify system documentation |
Specification note: The “30 V / 1000 V” designation is explicitly associated with the A105 variant in ABB’s spare-parts documentation. It should not be interpreted as a simple 30 VDC board supply rating or as a generic 1000 V input rating without the applicable circuit documentation.
UAD215A105 3BHE026284R0105
Main Features and Engineering Considerations
Dedicated Converter Signal Interface
The ABB UA is designed for a specific position in ABB’s excitation/converter architecture. Its CSI designation is important: this board handles converter-related signal interfacing rather than providing the type of freely configurable field I/O expected from an AC 800M I/O module.
UNL14300-Specific Configuration
ABB explicitly identifies as a CSI for systems and specifies its configuration as 30 V, 1000 V. This is the first compatibility point to check when evaluating a replacement.
Do Not Substitute by Physical Similarity
The UA family contains several electrically different variants:
- A101 — 15 V / 500 V
- A102 — 15 V / 1000 V
- A104 — 30 V / 500 V
- — 30 V / 1000 V
- A106 — 30 V / 1500 V
ABB’s own parts table confirms these distinctions. A physically similar board with another suffix can therefore be unsuitable even if the connectors and mounting arrangement appear identical.
Measurement-Path Integrity
Because the board sits in the converter signal interface path, replacement work should include verification of signal scaling, isolation, connector assignment, and the associated converter-control configuration. A board that powers up successfully is not necessarily a correctly matched board.
Cabinet-Level Compatibility
The correct procurement approach is to identify the complete UNITROL/UNL system, cabinet location, existing board number, and revision information. Check the cabinet drawing and board position before installation. The 3BHE026284R0105 number should remain intact throughout the MRO record.
Field Replacement
For a planned outage, photograph the installed board and connector positions before removal. Record the existing board identification and any visible hardware revision. After replacement, verify converter feedback and diagnostic status before returning the excitation/converter system to normal operation.
Avoid Unsupported Generic Specifications
Some secondary listings claim 24 VDC operation, mixed analog/digital I/O, Modbus, IP67, or other specifications for this part. Those claims are not supported by the ABB spare-parts identification found for the exact order number and should not be copied into an engineering specification without primary documentation.
Application Scenarios
- ABB UNITROL 6000 excitation systems
- converter systems
- High-power excitation equipment
- Generator excitation control cabinets
- Converter signal-interface circuits
- Power-generation maintenance
- Legacy UNITROL 6000 system refurbishment
- Planned outage spare-part replacement
- Converter-control system troubleshooting
Engineer’s Guide: Field Pitfalls
Do not confuse UAD215A105 with a standard PLC I/O card. Its documented function is a Converter Signal Interface within the UNITROL 6000 architecture.
Check the suffix carefully. A101, A102, A104, , and A106 represent different voltage configurations. ABB specifically identifies as 30 V / 1000 V.
Verify compatibility. The ABB parts table specifically associates with .
Do not interpret “1000 V” as a simple board input specification. It is part of the configuration designation and needs to be understood in the context of the converter signal circuit.
Check the complete order number. Specify UAD215A105 / 3BHE026284R0105, not merely “UA .”
Inspect the replacement board before installation. Compare PCB markings, connectors, revision information, and physical construction with the removed unit.
Frequently Asked Questions
What is ABB ?
ABB is the designation for , a CSI Converter Signal Interface used in ABB UNITROL 6000 equipment. The exact ABB part number is 3BHE026284R0105.
What system uses 3BHE026284R0105?
ABB identifies 3BHE026284R0105 / UA as a Converter Signal Interface for systems within the UNITROL 6000 family.
What does mean?
In ABB’s spare-parts table, is the 30 V / 1000 V configuration of the UA CSI family.
Is an analog I/O module?
Not in the normal PLC sense. It is documented by ABB as a CSI Converter Signal Interface for the excitation/converter system.
Can UA A104 replace UA ?
Do not assume so. A104 is identified as 30 V / 500 V, while is 30 V / 1000 V. The voltage configuration is different, so substitution requires explicit ABB/system-level confirmation.
What is the correct procurement description?
A suitable procurement description is:
ABB UA — 3BHE026284R0105 — CSI Converter Signal Interface, 30 V / 1000 V, for / UNITROL 6000.
Procurement Note
For MRO purchasing, specify the complete identification:
ABB UA / — 3BHE026284R0105
Then confirm the installed system is and that the required configuration is 30 V / 1000 V. ABB’s own spare-parts documentation provides strong evidence for this exact identification.
The main procurement risk is ordering a neighboring UA variant based only on the board family. A101, A102, , , and A106 are configuration-specific parts, not interchangeable generic versions.
