TRICONEX 3006 Invensys TMR CPU Module

Technical Dossier

Product Details And Specifications

TRICONEX Tricon Series: Comprehensive Module Range and Technical Overview

The TRICONEX Tricon platform, developed by Invensys (now Schneider Electric), is one of the most widely deployed Triple Modular Redundancy (TMR) Safety Instrumented Systems (SIS) in global heavy industry. The TRICONEX 3006 is a Main Processor Module (MP) used within the Tricon v9 and v10 controller chassis, executing the safety application logic across three independent processing channels simultaneously. Installations span petrochemical complexes, offshore platforms, nuclear power facilities, LNG terminals, and refinery emergency shutdown systems (ESD) across North America, the Middle East, and Asia-Pacific. The Tricon architecture is certified to IEC 61511 and IEC 61508 SIL 3, making it the reference standard for high-integrity process safety applications. End-of-life asset management for Tricon hardware is a critical operational concern for facilities running multi-decade plant lifecycles.

The Evolution of Tricon Architecture

The Triconex Tricon system was introduced in the late 1980s as a hardware-redundant TMR controller, replacing relay-based and single-channel SIS architectures. Early generations (v1–v6) used proprietary backplane communication and were limited to dedicated I/O chassis. The v7 and v8 generations introduced expanded I/O density and improved diagnostics. The v9 platform — to which the 3006 belongs — standardized the Main Processor architecture, introduced the Tricon Communication Module (TCM) for Ethernet-based engineering access, and expanded the chassis to support up to 15 I/O slots. The v10 platform extended this with enhanced cybersecurity features and TriStation 1131 v4.x compatibility. Facilities running v9 hardware (including the 3006 CPU) face compatibility constraints when integrating with modern DCS layers, as the TCM firmware version must align with the TriStation software release. Backward compatibility between v9 and v10 I/O modules is partial and must be validated per module type. The Tricon system has entered a mature/sustaining lifecycle phase; Schneider Electric continues to provide spare parts and firmware support under long-term maintenance agreements, but new feature development is concentrated on the Tricon CX and Trident platforms.

Tricon Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly deployed modules within the TRICONEX Tricon v9/v10 platform. Each entry reflects a distinct hardware function within the TMR architecture.

CPU & Main Processor Modules

• 3006: Main Processor v9, TMR CPU, executes safety logic across three redundant channels, 32-bit architecture, supports TriStation 1131 programming.
• 3007: Enhanced Main Processor v9, increased memory capacity, extended diagnostic coverage vs. 3006 baseline.
• 3008: Main Processor v10, cybersecurity-hardened firmware, role-based access control, compatible with TriStation 1131 v4.9+.
• 3009: Main Processor v10 with expanded program memory, designed for large-scale ESD and F&G applications.

Digital Input (DI) Modules

• 3501: 32-channel 24 VDC Digital Input Module, TMR voting, field-side isolation, SIL 3 rated.
• 3503: 32-channel 120 VAC Digital Input Module, used in legacy relay interface applications.
• 3504: 32-channel 24 VDC Digital Input Module with enhanced diagnostics, v10 compatible.
• 3511: 16-channel 24 VDC Digital Input, high-density, used in compact chassis configurations.

Digital Output (DO) Modules

• 3601: 16-channel 24 VDC Digital Output Module, solid-state, TMR voted output, SIL 3.
• 3603: 16-channel 120 VAC Digital Output Module, relay-driven, for solenoid valve interfaces.
• 3607: 16-channel 24 VDC DO with enhanced current sourcing, used in high-load actuator circuits.

Analog Input (AI) Modules

• 3701: 8-channel 4–20 mA Analog Input Module, TMR, 12-bit resolution, HART pass-through capable.
• 3703E: 8-channel Enhanced Analog Input, 16-bit resolution, improved noise rejection, SIL 3.
• 3704E: 8-channel AI with integrated HART multiplexer, supports asset management integration.

Communication & Network Modules

• 4351B: Tricon Communication Module (TCM), dual Ethernet ports, supports Modbus TCP, OPC, and TriStation 1131 engineering access.
• 4352: Advanced TCM with enhanced cybersecurity, RADIUS authentication, encrypted engineering sessions.

Power Supply Modules

• 8110: AC Power Supply Module, 120/240 VAC input, redundant configuration supported, chassis-level power distribution.
• 8112: DC Power Supply Module, 24 VDC input, for battery-backed or DC-fed installations.

Sourcing Hard-to-Find & Obsolete Tricon Parts

The TRICONEX 3006 and associated v9-generation modules are no longer in active production. Schneider Electric's official channel prioritizes v10 and Tricon CX hardware. For facilities committed to long-term operation of v9 systems — common in refineries and nuclear plants with 20–40 year asset lifecycles — sourcing verified surplus and refurbished modules is the primary maintenance strategy. DriveKNMS maintains a dedicated inventory of Tricon v9 and v10 spare parts, including the 3006 CPU, 3501/3503/3504 DI modules, 3601/3603 DO modules, and 3701/3703E AI modules. All units are sourced from decommissioned plant inventories or authorized surplus channels, with full traceability documentation. DriveKNMS provides cross-reference support to identify functional equivalents where direct replacements are unavailable, and can advise on firmware compatibility between replacement CPUs and existing I/O chassis configurations.

Quality Control for the Tricon Range

TRICONEX Tricon modules — particularly the 3006 CPU and backplane communication modules — require specialized test procedures due to their TMR voting architecture. Standard PLC test benches are insufficient. DriveKNMS applies the following protocol to all Tricon hardware prior to shipment:

• Chassis-level power-on test: Module is installed in a live Tricon v9 chassis with verified power supply and backplane integrity confirmed via LED diagnostics.
• TMR channel verification: All three processing channels (A, B, C) are independently verified for synchronization and voting logic integrity using TriStation 1131 diagnostic tools.
• Communication bus test: Backplane SBUS communication between CPU and I/O modules is validated; any CRC errors or timeout faults are flagged as rejection criteria.
• Firmware version audit: CPU firmware version is documented and matched to the customer's TriStation software version to confirm compatibility before dispatch.
• Burn-in cycle: Modules undergo a minimum 24-hour powered burn-in to screen for latent component failures.
• Final inspection: Physical inspection for connector pin integrity, conformal coating condition, and absence of corrosion or mechanical damage.

For sourcing inquiries, technical cross-references, or bulk spare parts requirements for the TRICONEX 3006 and the full Tricon module range:

• Email: sale@driveknms.com
• WhatsApp: +86 18359293191
• Web: driveknms.com

© 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.