ABB Baile INICT13A Discontinued: How One Communication Card Can Stall INFI 90 Data Flow

2026-09-11

In power plants and chemical facilities running Bailey INFI 90 systems, there is a failure mode that operators dread more than a controller trip: the moment every temperature, pressure, and flow reading on the operator station freezes or goes blank — not because the process has stopped, but because one card deep inside the cabinet has stopped talking.

That card is the INICT13A. In ABB Bailey INFI 90 architecture, it serves as the Infi-Net to Computer Transfer module — the bridge between the control network and the plant's supervisory computers. The original unit is no longer in production. ABB's recommended successor is the SPICT13A, but the installed base of legacy systems continues to generate replacement demand.

What the INICT13A Actually Does

To understand why a single card can stall an entire data flow, you need to understand the INFI 90 architecture.

In an INFI 90 system, field controllers — such as the IMMFP01 — execute the actual control logic. They read temperature, pressure, valve position, and other process variables through I/O modules, then run PID loops and logic sequences. But that data stays on the INFI-NET control bus, speaking Bailey's proprietary protocol at 1 Mbps over dual redundant coaxial or fiber links.

The INICT13A sits between INFI-NET and the supervisory layer. On one side, it connects to the control network. On the other, it provides a SCSI high-speed parallel port or RS-232 serial interface to the operator station, historian, or plant computer. It packages process data for upload and passes operator commands back down to the controllers.

Key Specifications (Summary)

After the Discontinuation: The 2026 Sourcing Reality

The INICT13A discontinuation did not happen overnight. As ABB migrated the Bailey product line toward Symphony Plus and System 800xA, the INICT13A was classified as obsolete. The official migration path points to the SPICT13A, designed for the Symphony Plus platform.

But a substantial installed base of INFI 90 systems remains in service across power generation, refining, and water treatment. Many of these systems were commissioned in the 2000s and are still running today. The result is a persistent supply-demand mismatch: the original manufacturer has stopped production, but installed systems still need replacements.

Today's supply comes from three channels: new surplus stock, professionally tested refurbished units, and de-installed modules from retired systems. Industry sources note that the secondary market for INFI 90 hardware is tightening year by year, making verification of incoming spares a discipline in itself.

Common Failure Modes and Diagnostics

Based on field experience, INICT13A-related communication faults typically present in three forms:

• Complete loss of data on the operator station — module is fully offline. Check backplane power (5 VDC) and rack connector seating.
• Intermittent data dropouts or sluggish updates — bus loading too high, oxidized connectors, or poor SCSI cable shielding and grounding.
• Frequent timeouts and retransmissions — incorrect SW4 DIP switch settings. ABB documentation notes that SW4 positions 6, 7, and 8 must remain open when using the SCSI interface.

Replace or Migrate: Two Paths Forward in 2026

When an INICT13A fails or spare stock runs dry, plants typically face a choice between two strategies.

Path One: Maintain the status quo with like-for-like replacement. This suits facilities that do not plan a full system upgrade in the near term. The main challenge is sourcing. New surplus INICT13A inventory is limited, and overseas lead times can exceed 40 days. For a 24/7 production line, that wait is often unacceptable.

Path Two: Accelerate system migration. Gradually upgrade the INFI 90 platform to Symphony Plus or System 800xA. ABB's recommended migration uses the SPICT13A as a transitional replacement. A full migration involves controllers, I/O, and the operator layer, so investment and outage windows must be planned carefully.

One recent example illustrates the stakes. A 25+ MW biomass energy plant in North America operated a Bailey INFI 90 powerhouse Balance of Plant control system alongside a GE Mark III turbine control system. The facility upgraded to a Rockwell PlantPAx DCS to achieve unified control and reduce maintenance costs. The upgrade was completed with a total plant outage limited to three weeks — a timeline that required pre-outage control logic testing and careful coordination with plant personnel. The project demonstrates that migration is feasible, but requires disciplined planning.

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