TRICONEX Tricon Series Modules | 8310 Power Module

Technical Dossier

Product Details And Specifications

TRICONEX Tricon Series: Comprehensive Module Range and Technical Overview

The TRICONEX Tricon series is a Triple Modular Redundant (TMR) safety system deployed across the most demanding segments of global heavy industry, including petrochemical complexes, nuclear power stations, offshore oil & gas platforms, and refinery process units. Tricon systems are certified to IEC 61511 and IEC 61508 SIL 3, making them the reference architecture for Safety Instrumented Systems (SIS) where a single point of failure cannot be tolerated. Installed base spans over 10,000 systems worldwide, with active deployments in facilities operated by major energy companies across North America, the Middle East, Europe, and Asia-Pacific. The 8310 is a core power supply module within this architecture, providing regulated DC power to the Tricon main chassis backplane.

The Evolution of Tricon Architecture

The Tricon platform was introduced by Triconex Corporation in the late 1980s as a hardware-redundant TMR controller. Each processing path (leg) operates independently; all three legs vote on outputs, and any single leg failure does not interrupt system operation. The original Tricon v1 and v2 chassis used proprietary backplane buses with dedicated I/O modules. Through the 1990s and 2000s, Triconex (acquired by Invensys in 2001, subsequently by Schneider Electric in 2014) expanded the platform with the Tricon v9 and v10 main processors, enhanced communication modules, and expanded I/O density. The Tricon CX (model 4351A/B) introduced a more compact chassis form factor for smaller SIS applications. Compatibility between generations is constrained by chassis backplane revision and firmware version; mixing v9 and v10 processor modules in the same chassis is not supported. The 8310 power module is compatible with the standard Tricon main chassis and must be matched to the chassis revision and local AC/DC input specification. As the Tricon platform has entered a mature/sustaining lifecycle phase, Schneider Electric continues to provide long-term maintenance support, but new hardware procurement increasingly relies on certified aftermarket and surplus suppliers for discontinued part numbers.

Tricon Full Catalog & Functionalities (SKU List)

Power Supply Modules

• 8310: AC input power supply module for Tricon main chassis; provides regulated 5 VDC and 24 VDC backplane power.
• 8311: DC input (24 VDC) power supply module for Tricon main chassis; used in battery-backed or DC-only installations.
• 8312: Redundant power supply module; second power slot for N+1 power redundancy in main chassis.

Main Processor / CPU Modules

• 4351A: Tricon CX main processor module; compact chassis TMR controller with integrated communication ports.
• 4351B: Tricon CX main processor module, revised hardware revision with enhanced diagnostics.
• 4119A: Tricon v10 main processor module; high-speed TMR CPU for full-size chassis.
• 4119B: Tricon v10 main processor module, updated firmware baseline and memory capacity.
• 4110: Tricon v9 main processor module; legacy CPU for earlier chassis generations.

Digital Input (DI) Modules

• 3501E: 32-channel 24 VDC digital input module; field-side isolated, TMR voting logic.
• 3503E: 32-channel 120 VAC digital input module; for high-voltage field device interfacing.
• 3664: 16-channel digital input module with enhanced diagnostics for SIL 3 loop verification.

Digital Output (DO) Modules

• 3601E: 16-channel 24 VDC digital output module; solid-state relay outputs, TMR architecture.
• 3603E: 16-channel 120/240 VAC digital output module; for AC-driven final elements.
• 3625: 8-channel high-current digital output module; rated for solenoid valve and motor starter loads.

Analog Input (AI) Modules

• 3700A: 8-channel 4–20 mA analog input module; 16-bit resolution, HART-compatible field wiring.
• 3703E: 16-channel analog input module; supports 4–20 mA and 1–5 VDC signal types.
• 3721: 8-channel thermocouple/RTD analog input module; for temperature measurement loops.

Communication & Network Adapter Modules

• 4329A: Tricon Communication Module (TCM); Ethernet-based DCS/SCADA interface, Modbus TCP and OPC support.
• 4329B: TCM revised hardware; enhanced network isolation and dual-port Ethernet.
• 4211: Tricon Hiway Adapter (THA); legacy peer-to-peer Tricon network communication module.

Sourcing Hard-to-Find & Obsolete Tricon Parts

A significant portion of the installed Tricon base operates on hardware that has been discontinued or placed on limited availability by Schneider Electric. Modules such as the 4110 main processor, 3503E AC digital input, and earlier power supply variants are no longer manufactured but remain in service at facilities with 20–30 year operational horizons. DriveKNMS maintains a dedicated inventory of tested surplus and refurbished Tricon modules to support lifecycle extension programs. All sourced units are subject to full functional verification before dispatch. DriveKNMS provides documentation of test results and, where applicable, firmware version confirmation to ensure compatibility with the customer's existing chassis revision. Emergency same-day dispatch is available for critical SIS maintenance scenarios. Customers operating under a long-term maintenance agreement (LTMA) or plant turnaround schedule are encouraged to submit a full bill of materials (BOM) for batch quotation.

Quality Control for the Tricon Range

Tricon modules present specific test challenges due to their TMR backplane architecture and high-density I/O bus. DriveKNMS applies a structured test protocol for each module type:

• Power Modules (8310, 8311, 8312): Output voltage regulation verified under load; ripple and noise measured against OEM specification; thermal cycling performed to confirm capacitor integrity.
• CPU Modules (4119A/B, 4351A/B): Boot sequence and self-diagnostic completion verified; memory integrity checked; communication port loopback tests performed.
• I/O Modules (3501E, 3601E, 3700A, etc.): All channels individually stimulated and response verified; isolation resistance measured between field-side and logic-side; LED diagnostic indicators confirmed functional.
• Communication Modules (4329A/B): Network port connectivity and packet integrity tested; Modbus TCP register map verified against standard Tricon configuration.

Each module is assigned a unique test record traceable to the dispatch order. Modules that do not pass all test criteria are quarantined and not offered for sale.

© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.