TRICONEX 3003 – TMR Processor Module for Tricon Safety Instrumented Systems

The TRICONEX 3003 is a processor module used within the Tricon triple-modular redundant (TMR) safety platform. In a typical configuration, three 3003 modules operate in parallel, executing the same safety logic with majority voting to maintain availability even if one path experiences a fault. From my experience, plants choose the 3003 when they need deterministic performance, continuous diagnostics, and online maintainability in high-demand SIS applications.

You might notice that it’s designed as a backplane-powered, hot‑swappable module, so maintenance teams can replace a unit without stopping the process. That single detail often saves hours of downtime in refineries and power units where shutdown windows are tight.

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Key Features

• Triple-Modular Redundancy (TMR): Three independent processors run in lockstep with majority voting to preserve logic execution during a single fault.
• Online Diagnostics: Continuous self-checks and error reporting; faults are isolated to maintain system operation while you plan maintenance.
• Hot-Swappable: Replace a module online in most cases without halting the Tricon system, which typically reduces downtime risk.
• Backplane Integration: Communicates via the Tricon backplane; field I/O and external comms are handled by companion I/O and communication modules.
• Deterministic Execution: Designed for predictable scan performance to meet SIL-rated application requirements.
• System Scalability: Works with Tricon chassis, power supplies, I/O, and communication modules (e.g., 3503E Ethernet) for larger SIS architectures.

Technical Specifications

Application Fields

The 3003 is applied in TÜV-certified Tricon safety systems across:

• Refining and petrochemical units (ESD, HIPPS, tank overfill protection)
• Upstream gas processing and pipelines (compressor protection, burner management)
• Power generation (turbine protection, boiler BMS, balance-of-plant interlocks)
• Chemical and pharmaceuticals (reactor safeguarding, environmental trip systems)

A recent customer in a gas plant swapped a faulty processor online and restored full TMR operation within a maintenance window—no process interruption, which was the deciding factor for standardizing on the Tricon platform.

Advantages & Value

• Reliability: TMR architecture with fault isolation and voting typically meets SIL 3 availability targets.
• Compatibility: Works within established Tricon racks, power supplies, and I/O—eases expansion and spares strategy.
• Cost Control: Hot-swap capability and diagnostics reduce unplanned downtime costs in many cases.
• Supportability: Mature ecosystem of tools, firmware, and field-proven procedures, which seems to be what maintenance teams prefer.

Installation & Maintenance

• Cabinet & Chassis: Install in a Tricon chassis within a 19-inch control cabinet; allow adequate ventilation and keep ambient within the specified temperature range.
• Wiring & Grounding: No field wiring to the 3003; ensure backplane connectors are clean and the cabinet grounding is low-impedance.
• Hot-Swap Procedure: Follow site MOC and SIS bypass procedures; replace one leg at a time to maintain TMR operation.
• ESD Handling: Use proper ESD protection; avoid touching edge connectors.
• Firmware Alignment: Keep firmware revisions aligned across the TMR set; validate application logic checksum before returning to service.
• Routine Care: Periodic dust removal with dry air, verify diagnostics logs, and schedule proof testing per IEC 61511 intervals.

Quality & Certifications

• TÜV-certified Tricon system up to SIL 3 (IEC 61508/61511)
• CE compliant (system level)
• Manufactured under ISO 9001 quality systems
• Manufacturer’s standard warranty practices apply; we provide a 365-day warranty on supply

Note: Model availability and compatibility can vary with system vintage. If you share your chassis part number and current firmware, we’ll match the 3003 to your installed base and recommend companion modules where needed (e.g., 3503E for Ethernet communications).