ABB Bailey INIIT13 – Infi to INFI?NET Local Transfer Interface for INFI 90 Systems

The ABB Bailey INIIT13 is a local transfer interface typically used to bridge the INFI 90 module bus to the plantwide INFI?NET network. It’s designed for deterministic, high-reliability data exchange between controller-level nodes and higher-level network segments, which is why you usually see it in mature power, chemical, and oil & gas sites that run Harmony/INFI 90 architectures.

From my experience, the INIIT13 is the “quiet fixer” in the cabinet: it synchronizes and moves real-time data, alarms, and status signals between local control loops and the broader supervisory network without getting in the way of the process.

• Local-to-Network Bridging: Transfers data between the INFI 90 local module bus and INFI?NET, enabling seamless data visibility across controllers and supervisory systems.

• Deterministic Communication: Supports time-consistent data exchange, which is critical for closed-loop control and coordinated interlocks.

• Redundant Architecture Friendly: Commonly deployed in paired configurations to maintain communications during maintenance or a single-point fault.

• Diagnostics and Status Indication: Front-panel LEDs (typically) provide quick checks of link health and module status, helpful for on-shift troubleshooting.

• Compatibility with INFI 90 Ecosystem: Works within standard ABB Bailey cabinets and backplanes, making modernization work simpler in brownfield sites.

• Low Touch in Daily Operation: Once addressed and commissioned, it tends to run for years with only periodic verification.

You’ll typically find the INIIT13 in plants where the controller-level INFI 90 modules need clean, reliable visibility on the INFI?NET backbone. It seems to be the preferred path when a site wants to keep legacy controllers while tying them into supervisory nodes, HMI/SCADA, or historian gateways.

• Power generation (coal, CCGT, biomass) for plantwide coordination and alarm propagation

• Oil & gas (upstream and refining) to integrate unit controllers with central control rooms

• Chemical and petrochemical for interlock sharing and cross-unit data transfer

• Pulp & paper and metals for line control synchronization and downtime diagnostics

• Reliability in Legacy Architecture: Purpose-built for the INFI 90/INFI?NET environment, so you avoid the performance oddities that come with improvised gateways.

• Compatibility and Lifecycle Flexibility: Lets you retain installed controllers while extending supervisory communications—useful in staged modernization programs.

• Reduced Downtime Risk: When used in redundant pairs, maintenance can be planned with minimal process impact.

• Supportable and Documented: Plenty of field knowledge and documentation exist, which helps with troubleshooting and training.

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• Cabinet and Environment: Install in a clean, ventilated INFI 90 cabinet with proper grounding. Maintain ambient conditions within the typical INFI module operating range.

• Wiring and Network: Use approved INFI?NET media and terminations. Keep cable shields properly grounded and respect bend radius. Separate redundant paths where possible.

• Addressing and Configuration: Set node IDs and parameters according to your site standard. Ensure firmware or module revisions are compatible across redundant pairs.

• Safety Precautions: De-energize the slot when required by site practice; if operating in redundancy, follow cutover procedures to avoid communication gaps.

• Routine Care: Periodically check LED status, network error counters, and event logs. Inspect connectors for oxidation, clean with approved methods, and verify cabinet fans/filters.

• CE and UL markings are commonly seen on later-revision INFI 90 modules; consult the specific INIIT13 label for confirmation.

• Manufactured within ABB’s documented quality system (ISO standards typically applied across this product family).

• RoHS status may vary by vintage; verify if your site requires RoHS compliance.

• Warranty: Standard manufacturer warranty terms apply; 12 months is typical in this product line.

If you’re maintaining an INFI 90/Harmony fleet and need dependable local-to-INFI?NET transfer without re-architecting the network, the ABB Bailey INIIT13 is usually the straightforward choice. You might notice that procurement becomes simpler too—spares alignment, fewer unknowns, and predictable commissioning steps.