TRICONEX 3006 – Triple Modular Redundancy CPU Module | Tricon Safety Platform
The TRICONEX 3006 is the central processing unit of the Invensys Tricon Triple Modular Redundancy (TMR) safety system — one of the most widely deployed Safety Instrumented System (SIS) platforms in the global process industry. Designed for continuous operation in mission-critical environments, the 3006 CPU executes the safety logic that governs emergency shutdown (ESD), fire & gas (F&G), and high-integrity process control applications.
Product Positioning: The 3006 CPU module is the computational core of the Tricon chassis. It operates in a 1oo3 (one-out-of-three) voting architecture, where three independent processors simultaneously execute the same logic and cross-check results — ensuring fault tolerance without spurious trips. This module is the preferred replacement and spare for Tricon systems running firmware 9.x and 10.x generations.
Complete Technical Specifications
- Part Number: 3006
- Manufacturer: TRICONEX (Invensys / Schneider Electric)
- Platform: Tricon TMR Safety System
- Module Type: Central Processing Unit (CPU)
- Architecture: Triple Modular Redundancy (TMR) — 1oo3 voting
- Safety Integrity Level: SIL 3 (IEC 61508 certified)
- Processor: Three independent 32-bit processors (synchronized)
- Memory: Program memory + data memory with battery-backed SRAM
- Communication Ports: RS-232 / RS-485 serial; TriStation 1131 programming interface
- Backplane Interface: Tricon main chassis backplane (compatible with 3000-series chassis)
- Firmware Compatibility: Tricon firmware v9.x / v10.x
- Operating Temperature: 0°C to +60°C (32°F to 140°F)
- Storage Temperature: -40°C to +85°C
- Relative Humidity: 5% to 95% non-condensing
- Power Consumption: Per chassis power budget (refer to Tricon system manual)
- Weight: Approx. 2.9 kg
- Certifications: IEC 61508 SIL 3, TÜV, FM, CE
- Form Factor: Single-slot Tricon module
Proven Application Environments
- Oil & Gas: Upstream wellhead ESD, downstream refinery SIS, pipeline emergency shutdown
- Petrochemical: Reactor protection systems, high-pressure vessel overpressure protection
- LNG / LPG Terminals: Fire & gas detection logic, loading arm interlock systems
- Power Generation: Turbine protection, boiler management, generator trip logic
- Chemical Processing: Batch reactor safety, toxic release prevention
- Nuclear (Balance of Plant): Non-nuclear safety instrumented functions
- Offshore Platforms: HIPPS (High Integrity Pressure Protection Systems)
Engineering Advantages
- True TMR Fault Tolerance: Any single processor failure is masked automatically — no spurious shutdown, no loss of safety function.
- Online Repair: Faulty CPU can be replaced while the system remains in service (hot-swap capable in redundant configurations).
- Deterministic Scan Time: Guaranteed cycle time ensures predictable safety response within defined SIL 3 parameters.
- Comprehensive Diagnostics: Built-in self-test (BIST) continuously monitors processor health, memory integrity, and backplane communication.
- TriStation 1131 Integration: Full compatibility with Invensys TriStation 1131 programming environment for logic development, download, and online monitoring.
- Long Field Life: Designed for 20+ year operational lifespan in continuous process environments.
System Architecture & Signal Flow
The TRICONEX 3006 CPU operates within the Tricon main chassis alongside I/O modules and power supplies. The three internal processors (Leg A, Leg B, Leg C) each independently read all input signals from the I/O bus, execute the user safety program, and compare output results via a high-speed inter-processor communication bus. Only when all three legs agree (or a 2oo3 majority is reached) are output commands issued to field devices.
Signal flow: Field Inputs → Input Modules → Backplane Bus → 3006 CPU (3× parallel execution) → Voter Logic → Output Modules → Final Control Elements
The 3006 communicates with the TriStation 1131 workstation via the front-panel serial port for program download, configuration, and live diagnostics. MODBUS RTU/TCP communication to DCS or HMI systems is supported via the Tricon Communication Module (TCM) in the same chassis.
Sourcing & Quality Verification
- Source: Decommissioned from operational Tricon systems or authorized distributor surplus — all units are traceable.
- Inspection Protocol: Visual inspection (PCB, connectors, front panel), power-on functional test, firmware version verification, and backplane communication check prior to shipment.
- Condition Grades Available: Refurbished (tested, cleaned, re-labeled) and Used-Tested (as-removed, functionally verified).
- Warranty: 12-month replacement warranty against functional failure under normal operating conditions.
- Counterfeit Prevention: All modules are inspected against known-genuine reference units. Suspect units are quarantined and not listed for sale.
- Documentation: Certificate of conformance and test report available upon request.
Procurement Process
- Confirm Compatibility: Verify your Tricon chassis generation and firmware version (9.x or 10.x) before ordering. Contact our engineering team if unsure.
- Request Quote / Place Order: Add to cart or contact [email protected] for volume pricing and lead time confirmation.
- Pre-Shipment Test Report: Issued within 1 business day of order confirmation.
- Shipping: DHL Express / FedEx International Priority. Export documentation (commercial invoice, packing list, HS code 8537.10) included. Typical transit: 3–7 business days worldwide.
- Incoming Inspection Support: Our engineers can assist with your site acceptance test (SAT) procedure via video call.
Technical FAQ
Q: Is the TRICONEX 3006 compatible with the Tricon 3000-series chassis?
A: Yes. The 3006 CPU is designed for the Tricon main chassis (3000-series). Confirm your chassis slot configuration and firmware version for full compatibility.
Q: Can the 3006 be replaced online without shutting down the process?
A: In a fully redundant TMR configuration, the CPU can be replaced while the remaining two legs maintain the safety function. Always follow your site MOC (Management of Change) procedure.
Q: What firmware version does this unit ship with?
A: Firmware version is verified and documented in the test report. Upgrades to the latest compatible firmware can be performed via TriStation 1131 — contact us for guidance.
Q: Do you provide a functional test certificate?
A: Yes. A functional test report is issued with every unit. Extended third-party certification is available upon request at additional cost.
Q: What is the lead time for this module?
A: In-stock units ship within 1–2 business days. Contact us for current stock status and expedited options.
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