ABB UAA326A02 (HIEE300024R2) – Plug‑in I/O/Interface Module for Advant/INFI Control Systems

The ABB UAA326A02, part number HIEE300024R2, is a plug‑in electronic module used in ABB Advant/INFI‑series distributed control systems. You might notice that ABB lists both the “UAA” board code and the HIEE part number; in many cases they refer to the same assembly and revision. From my experience, this module is typically installed in a system rack and interfaces field signals to the controller via the backplane—no front‑mounted programming ports, just clean integration inside the cabinet.

Our Order Process and Guarantees

• Warranty: 365 days from shipment
• Delivery: 1 week if in stock; no more than 1 month latest lead time
• Payment: 50% advance; full balance prior to delivery
• Express options: FedEx, UPS, DHL
• Test & inspection: powered functional check and visual inspection before dispatch
• Packing: ESD-safe, foam‑lined, export carton or crate as required

Key Features

• Rack‑mount plug‑in module – Designed for ABB Advant/INFI system racks, saving panel depth and simplifying wiring to termination units.
• Backplane powered and controlled – Power and data via the system backplane, reducing external wiring and loose cabling.
• Industrial temperature design – Typically supports control‑room operation with stable performance under continuous duty.
• Status indication – Front LEDs (where fitted) provide quick diagnostics for module health or channel activity.
• Field isolation & conditioning – Intended for safe signal interfacing to the DCS; helps protect the controller from field noise and surges.
• Revision‑tracked assembly – UAA326A02 / HIEE300024R2 markings make lifecycle management and spares matching straightforward.

Technical Specifications

Application Fields

This module suits brownfield maintenance and expansions where Advant/INFI infrastructure remains the plant standard. We typically see it in:

• Power generation – turbine auxiliaries, feedwater loops, BOP interlocks
• Oil & gas – compressor stations, separation skids, burner management interfaces
• Chemicals & petrochem – reactor control, utilities, tank farm automation
• Pulp & paper – stock prep, bleaching lines, drive interfaces
• Metals & mining – rolling mill auxiliaries, water systems, flotation controls
• Water & wastewater – filtration trains, blower control, dosing skids

A maintenance lead recently told me their team swapped a UAA‑series board during a planned outage and recovered full loop stability without touching the controller firmware—exactly the kind of low‑risk swap most plants want.

Advantages & Value

• Form‑fit‑function replacement – Drop‑in for existing cabinets; avoids rewiring or requalification of the whole rack.
• High compatibility – Matches ABB backplane signaling and termination practices, reducing commissioning time.
• Lifecycle support – Useful for extending plant life where a full DCS migration isn’t budgeted this year.
• Cost control – Minimizes downtime and spares consolidation; typically no change to PLC/DCS logic for like‑for‑like replacements.
• Technical backing – We can help verify revision compatibility and pre‑ship test the module under load where applicable.

Installation & Maintenance

• Cabinet standards – Install in a clean, dry control cabinet with proper grounding and ESD protection; maintain clearance for airflow.
• Wiring – Use ABB‑recommended termination units and shielded cabling for noisy environments; keep signal and power separated.
• Handling – Observe ESD precautions; avoid flexing the front connector; check the backplane keying before insertion.
• Hot‑swap – These modules typically are not hot‑swappable; schedule a controlled stop or follow site‑approved procedures.
• Routine checks – Inspect connectors annually, clean dust with dry air, and verify LED/status behavior during walkdowns.
• Firmware/config – If the module carries configuration or calibration, back it up prior to replacement and label the revision on receipt.

Quality & Certifications

• Manufacturing standards: ABB production typically under ISO 9001 quality systems
• Conformity: CE marked for EMC/low voltage in most deliveries
• UL/CSA: Many Advant/INFI modules are UL Recognized; labeling varies by revision
• RoHS: Status may depend on production year; later revisions often compliant
• Warranty: 12 months (365 days) replacement/repair policy from our shipment date