ABB UAD215A105 (3BHE026284R0105) – Control I/O Board for ABB Excitation and High‑Power Drive Systems

The ABB UAD215A105, part number 3BHE026284R0105, is a field-replaceable control I/O board used in ABB high-power converter and excitation platforms. From my experience, it’s typically deployed inside cabinet-mounted systems where stable analog/digital signal conditioning, robust isolation, and dependable backplane communications matter for uptime. One thing I appreciate is how it’s designed as a drop-in replacement within the 3BHE-series ecosystem, helping maintenance teams restore operation fast without reworking the entire cabinet.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week if in stock, no more than one month at the latest
• Payment: 50% advance; balance paid in full before delivery
• Express Options: FedEx, UPS, DHL

Key Features

• Mixed I/O and signal conditioning: Handles analog and digital signals, typically with galvanic isolation to reduce noise and ground loops in cabinet environments.
• Backplane integration: Interfaces to the host ABB control system via the internal rack/backplane, keeping wiring clean and serviceable.
• 24 VDC control power: Designed for standard industrial 24 VDC control supplies, which simplifies spares and power planning.
• Serviceable, field-friendly layout: Plug-in board construction makes swap-outs straightforward during planned shutdowns.
• Industrial temperature performance: In many cases suitable for cabinet-mounted operation in plant rooms with controlled ambient temperatures.
• Traceable 3BHE series part: The 3BHE026284R0105 designation eases cross-referencing during MRO and procurement.

Technical Specifications

Application Fields

You might notice this board most often in excitation cabinets and high-power converter systems. Typical sites include:

• Power plants (generator excitation and rectifier controls)
• Metals and mining (large DC drives and auxiliary converter racks)
• Pulp & paper and chemical plants (process drives with legacy ABB racks)
• Marine propulsion and offshore packages using ABB high-power converters

A maintenance lead at a steel mill told us they keep one of these on the shelf because it “saves a weekend” if a control channel goes noisy before a casting run.

Advantages & Value

• Reliability first: Built for continuous duty in industrial cabinets; helps stabilize analog/digital signals in electrically noisy environments.
• Drop-in compatibility: The 3BHE026284R0105 coding simplifies matching to your installed base, reducing engineering time.
• Lower lifecycle cost: Replacing a single board is often far more economical than retrofitting an entire rack or controller.
• Technical backing: We can assist with part matching, firmware label checks (if applicable), and installation notes to avoid configuration mismatches.

Installation & Maintenance

• Environment: Mount inside an IP-rated control cabinet to IEC/NEMA standards; keep ambient within 0–55 °C with adequate ventilation.
• Power & grounding: Use a clean 24 VDC supply with proper grounding; keep shield drains consistent with site EMC practice.
• Wiring: Follow ABB terminal labeling; segregate analog, digital, and power cabling; avoid tight bends and maintain cable shields to one end if specified.
• ESD handling: Treat as a static-sensitive device; use wrist straps and antistatic packing during handling.
• Commissioning: After installation, run system self-tests and verify channel scaling and polarity on the affected I/O.
• Upkeep: Quarterly dust removal with dry air (low pressure); periodic functional checks; firmware/parameter verification if the system uses board-level revisions.

Quality & Certifications

• Certifications (typical for ABB control boards): CE marked; RoHS compliant; manufactured under ISO 9001 quality systems.
• Warranty: 365-day warranty coverage for repair or replacement based on test results.
• Traceability: Supplied with full part number identification (UAD215A105 / 3BHE026284R0105) for clear maintenance records.

If you’re matching this board to an existing cabinet, share a photo of the module label and rack ID, and we’ll double-check compatibility. In most cases that avoids return loops and keeps your outage window short.