Foxboro H92 H92A049E0700 Analog Input Module – Stable 4–20 mA acquisition for I/A Series expansions

The Foxboro H92 H92A049E0700 is an analog input module designed for process data acquisition in Foxboro I/A Series (now Schneider Electric) control systems. From my experience, the H92 line is typically used to bring reliable 4–20 mA process signals back to the controller through the system backplane, with noise immunity and isolation that suits demanding plant environments. You might notice that it’s a straightforward fit for brownfield expansions—add channels without reworking your entire cabinet layout—and it seems to be a favorite in plants where uptime and stable readings matter more than feature fluff.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: 1 week for in-stock items; no more than one month at the latest
• Payment: 50% advance payment, full payment prior to delivery
• Express options: FedEx, UPS, DHL
• Each unit is function-tested before dispatch and packed for industrial transit.

Key Features

• Analog input for process loops: Built for standard 4–20 mA acquisition, commonly used with transmitters across flow, pressure, level, and temperature.
• Backplane integration: Interfaces directly to the Foxboro I/A Series system backplane, keeping wiring neat and commissioning straightforward.
• Channel isolation and noise rejection: Designed for stable readings in electrically noisy panels; helps reduce drift and ground loop issues.
• Diagnostic indicators: Front status LEDs (typical on H-series) provide quick visual checks—handy during start-up and maintenance.
• Industry-friendly form factor: Compact module footprint to fit existing Foxboro carriers/chassis without rework.
• HART pass-through on applicable variants: In many cases, H92 family variants support HART data over 4–20 mA; confirm by sub-revision if you plan asset management integration.

Technical Specifications

Application Fields

This module fits where dependable analog data is a must: refining, petrochemicals, gas processing, power generation (balance-of-plant loops), pharmaceuticals (utility skids), food & beverage (CIP/SIP utilities), water/wastewater (lift stations, chlorination), and pulp & paper. A maintenance lead told me they picked the H92 series simply because it “just reads clean 4–20 mA without surprises,” especially on long runs with shielded cable.

Advantages & Value

• Reliability: Stable acquisition and solid isolation help reduce nuisance trips and false alarms in noisy environments.
• Compatibility: Works within Foxboro I/A Series architecture—no need to re-qualify third-party cards or adapters.
• Lifecycle cost: Minimizes engineering time for retrofits; typically reuses existing carriers and termination assemblies.
• Supportability: Diagnostic indicators and straightforward loop checks speed up troubleshooting and routine PMs.

Installation & Maintenance

• Panel environment: Install in a clean, ventilated cabinet; keep ambient within the typical 0–50°C range and humidity under condensation levels.
• Wiring practices: Use shielded twisted-pair for 4–20 mA; terminate shields at a single point. Separate high-voltage and analog signal runs.
• Grounding & isolation: Avoid ground loops; check loop power supplies and reference points before commissioning.
• Commissioning: Verify each loop with a calibrator; confirm span and scale in the controller faceplate prior to handover.
• Routine maintenance: Annual loop checks are usually enough. Dust the module fronts and carriers; review diagnostics for any channel quality flags.
• Firmware/config: If your system uses module-specific firmware, align revisions across redundant cabinets to keep behavior consistent.
• Spares strategy: Keep at least one spare H92 module per cabinet section; it shortens recovery time during unplanned outages.

Quality & Certifications

• CE compliant
• UL/cUL recognized (typical for Foxboro I/A Series modules)
• RoHS alignment on applicable vintages
• Manufacturer’s warranty available; sales warranty: 365 days

Related and Supporting Components

For planning, pair the H92 with the appropriate Foxboro I/A Series carrier/chassis and the matching terminal assembly (TA) for field wiring. Many plants also keep spare backplane power supplies and a handheld loop calibrator for quick validation. If HART diagnostics are needed, confirm that your H92 sub-variant supports HART pass-through and that your controller/asset management software is enabled for it.

Note: Specifications can vary slightly by H92 sub-revision. If you have a P/N label or a cabinet photo, share it and I’ll verify channel type, isolation rating, and any HART capability on your exact unit.