ABB UFC911B101 (3BHE037864R0101) – Harmony/INFI 90 rack module for robust DCS expansion and lifecycle maintenance

The ABB UFC911B101, part number 3BHE037864R0101, is a plug-in module used in ABB Bailey Harmony/INFI 90 DCS environments. From my experience with UFC-series boards, this model is typically applied as a processing/communication module that lives on the system backplane rather than interfacing directly to field I/O. That makes it a practical choice for plant operators who need to expand capacity, replace an aging board, or standardize spares without reworking field wiring.

One thing I appreciate is how these UFC modules slot straight into the cardfile and come up cleanly with the existing firmware set—most teams can do a swap during a short maintenance window. You might notice that it saves both engineering time and risk compared to migrations, especially when the rest of the INFI 90 stack is healthy.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Lead time: 1 week if in stock; no more than one month at the latest
• Payment: 50% advance payment; full payment prior to delivery
• Express options: FedEx, UPS, DHL

Key Features

• Harmony/INFI 90 rack compatibility: Designed for the Bailey-style backplane used across many ABB DCS installations.
• Backplane-based I/O handling: Operates through the system bus; no direct field wiring changes needed in most cases.
• Stable long-term availability: Commonly stocked to support lifecycle maintenance and fast recovery after a fault.
• Service-friendly firmware approach: Firmware and personality typically matched to site revisions; we verify against your rack and software matrix before shipment.
• Drop-in replacement: Swap and commission typically within a short outage, minimizing production impact.
• ESD-safe construction: Industry-standard handling and conformal build approach for industrial environments.

Technical Specifications

Brand / Model	ABB UFC911B101 (3BHE037864R0101)
HS Code	853890 (Parts for boards, panels, consoles for control equipment)
Power Requirements	Supplied via system backplane; 5 VDC nominal (typical for Harmony/INFI 90 modules)
Installation Method	Plug-in rack module; 1-slot Harmony/INFI 90 form factor, front-face retention screws
Signal I/O Types	Backplane data bus; no direct field analog/digital I/O on the faceplate
Communication Interfaces	INFI 90 system backplane; service/diagnostic access may vary by firmware revision
Operating Temperature	0 to +55°C (typical DCS cabinet conditions)

Note: Exact capabilities can differ by board revision and firmware. We will cross-check your rack type, node address plan, and firmware baseline before shipment.

Application Fields

The UFC911B101 is commonly found in continuous-process industries that rely on ABB Harmony/INFI 90 architecture:

• Power generation – boiler and turbine control islands, excitation-related supervisory nodes
• Oil & gas – compressor stations, refining units, utility sections
• Chemicals & petrochemicals – reactor sequencing, utilities, interlocks
• Pulp & paper – machine section controls, recovery boiler systems
• Metals & mining – drives coordination, process interlocks

A maintenance supervisor recently shared that they replaced a UFC-series board during a night shift and had the unit back in service within 20 minutes—no loop rewiring, just a clean hot/cold restart and verification with their standard operating procedure.

Advantages & Value

• Reliability: Proven hardware family used widely in ABB DCS fleets; stable behavior across firmware loads in most cases.
• Compatibility: Designed to coexist with existing INFI 90 modules and network structures—typically no field-side changes.
• Cost savings: A direct replacement avoids engineering hours tied to system migration or requalification.
• Lifecycle support: We validate board revision/firmware to your site standards and provide documentation for commissioning.

Installation & Maintenance

• Cabinet environment: Keep within 0–55°C, low dust, and adequate ventilation; avoid high vibration near the rack.
• Wiring and grounding: Ensure clean system ground and backplane connectors free of oxidation. Seat the module firmly and secure front screws.
• ESD safety: Handle with grounded wrist straps; store in antistatic packaging.
• Firmware alignment: Match to site baseline; back up configuration before swap. If a service port is available, confirm firmware after power-up.
• Routine care: Periodic cabinet cleaning with dry air (no residue), visual inspection of connectors, and annual functional checks during planned outages.

Quality & Certifications

• Manufacturer quality system: ISO 9001 (ABB production)
• CE marking for EMC and low-voltage directives (typical for ABB DCS modules)
• UL/CSA recognition for industrial control equipment in many cases
• RoHS compliance may vary by board revision and production year—confirmable at order
• Warranty: 12 months from delivery

Helpful Pairing & Supporting Components

If you’re refreshing or expanding an INFI 90 node alongside the UFC911B101, you may also consider related components commonly found in the same cabinets:

• Harmony/INFI 90 power supplies and cardfiles (to ensure clean 5 VDC backplane power)
• Network/interface modules for INFI-NET node connectivity
• Analog/digital I/O modules (e.g., standard Harmony/INFI 90 AI/DI/DO cards) when expanding capacity

Share your rack type, installed firmware versions, and the target node role, and we’ll validate compatibility before shipping. It seems to be the fastest way to avoid on-site surprises.