Description
Unboxing & Physical Snapshot
- Model & Brand: Triconex 3004, a Tricon Main Processor Module, Version 8. Tricon lifecycle documentation identifies 3004 as the Version 8 processor with 1 MB memory.
- Processor Architecture: A Tricon chassis uses three Main Processor modules, with each processor serving one leg of the fault-tolerant controller; the processors independently communicate with the I/O subsystem and compare operating data.
- Physical Dimensions: A supplier listing reports approximately 4.5 × 18.8 × 20.8 cm; treat this as a provisional external size because the source is not an OEM mechanical drawing.
- Estimated Shipping Weight: One supplier reports approximately 1.4 kg; use 1.8–2.2 kg gross as a provisional export-packing allowance until the actual packed unit is weighed.
- What’s in the Box: 3004 processor module and protective ESD packaging when supplied as a standalone spare. Do not assume chassis hardware, power modules, communication modules, or configuration media are included.
- Receiving Inspection: Capture the exact 3004 marking, serial number, hardware revision, manufacturing information, faceplate condition, connector condition, and all visible status indicators.
Product Introduction
Architecture Hook
The Tricon 3004 is one of the three Main Processor modules that form the controller’s triplicated processing architecture. Each processor executes the user control program independently, communicates with the I/O subsystem, and participates in continuous comparison with its peer processors.
This is therefore a CPU-level safety-system spare, not an ordinary PLC processor. The 3004 belongs to the older Version 8 Tricon generation and carries 1 MB of SRAM; replacing it requires verification of the target controller revision, compatible communication modules, application program, and system configuration. Tricon lifecycle documentation places the 3004 in an earlier product generation with a lifecycle endpoint in 2008.
Core Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Triconex / Invensys |
| Model | 3004 |
| Product Type | Tricon Main Processor Module |
| Tricon Version | Version 8 |
| Processor Role | Main Processor |
| System Architecture | Triple-Modular Redundant (TMR) |
| Main Memory | 1 MB SRAM |
| Processor Count per Controller | 3 Main Processor modules |
| Communication | Tricon internal bus architecture; external communication via supported communication modules |
| Compatible Communication Modules | 4108, 4118, 4400, 4508, 4318, 4328, subject to system configuration |
| System Generation | Legacy Tricon Version 8 |
| Dimensions | Approx. 45 × 188 × 208 mm, supplier-reported |
| Weight | Approx. 1.4 kg, supplier-reported |
| Power Consumption | Verify exact hardware documentation |
| Operating Temperature | Verify exact Version 8 specification |
| Firmware | Hardware/software revision dependent |
| Installation | Tricon main chassis |

Triconex 3004
Tricon documentation identifies the 3004 and 3005 as Version 8 Main Processor modules, with 1 MB SRAM in the 3004 and 2 MB in the 3005. It also lists compatible communication modules including the 4108, 4118, 4400, 4508, 4318, and 4328.
Do not substitute a 3005 for a 3004 merely because the processor architecture is similar. The memory capacity is different, and the application belongs to an older, tightly version-controlled Tricon platform.
? Global Compliance & Industry Certifications
- CE Mark: Verify the applicable Tricon Version 8 system declaration and the certification status of the exact 3004 hardware revision.
- UL/cUL: Confirm certification through the applicable Tricon system documentation. Do not infer approval from a reseller listing.
- ATEX/IECEx: Do not assume the 3004 itself is independently hazardous-area certified. Hazardous-area compliance depends on the complete control-system installation and certified associated equipment.
- Marine Approvals: DNV, ABS, or Lloyd’s Register approval should be verified against the actual Tricon system configuration before marine/offshore deployment.
- Functional Safety: The 3004 is part of a TMR safety-controller architecture, but the processor alone does not establish the SIL capability of a complete safety instrumented function.
- Lifecycle Control: The 3004 is an obsolete/legacy processor generation. Tricon lifecycle documentation records Version 8 3004 as reaching its lifecycle endpoint in June 2008, making genuine, traceable spares particularly important for legacy plants.
- Audit Record: Retain the processor serial number, hardware revision, lifecycle evidence, system revision, supplier traceability, COO, and applicable certificates.
Verify specific lot certifications with OEM.
? Long-Term Storage & Asset Preservation Guide
- Keep the processor inside its original ESD shielding bag. Protect the backplane connector and exposed board interfaces from static discharge, dust, and oxidation. A legacy CPU should not be stored loose on an ordinary warehouse shelf.
- Control humidity and temperature cycling. Maintain a clean storage environment, preferably below 60% RH, with no condensation. Older electronic assemblies can tolerate long shelf periods, but uncontrolled moisture exposure is a different risk.
- Inspect electrolytic capacitors before energization after prolonged storage. The 3004 is an older processor generation; visual inspection for leakage, bulging, corrosion, or residue should precede power-up after extended dormancy. Follow the applicable OEM or site-approved controlled-energization procedure.
- Preserve the application image separately. The CPU hardware is only one element of recovery. Maintain the approved Tricon application program, configuration files, firmware information, controller revision, and communication-module inventory with the spare record.

Triconex 3004
Physical Installation Prerequisites
- Chassis Compatibility: Install the 3004 only in a Tricon chassis designed for the corresponding Version 8 processor architecture.
- TMR Configuration: A complete controller normally uses three Main Processor modules. Verify all three processor positions and revisions before restoring service.
- Mechanical Seating: Engage the guide system and backplane connector carefully; never force the processor into the chassis.
- Clearance: Maintain the manufacturer’s front and rear service space and keep chassis ventilation paths unobstructed.
- Grounding: Verify chassis protective-earth continuity and cabinet bonding before energization.
- Communication Compatibility: Confirm the installed communication modules are supported by the Version 8 processor architecture. The documented compatible family includes 4108, 4118, 4400, 4508, 4318, and 4328.
- Power: Verify the complete chassis power architecture rather than attempting to power the processor independently.
- Commissioning: Check processor PASS/FAULT status, TMR health, interprocessor comparison, application execution, communication-module status, and system diagnostics before returning the controller to service.
Buyer’s FAQ
Q1. What HS tariff code should be used for Triconex 3004?
Do not assign an HS classification solely from the model number. The 3004 is a Main Processor Module for a fault-tolerant industrial safety controller, and the final classification depends on its technical function and the importing country’s tariff schedule.
Have the customs broker validate the classification before issuing the commercial invoice. Use a precise description such as Tricon safety-system main processor module rather than “electronic board.”
Q2. Does Country of Origin affect this spare?
Yes. COO can affect customs duty, preferential tariff treatment, origin declarations, and trade-compliance screening.
One supplier listing identifies Germany as the origin, while another listing identifies USA; these conflicting reseller claims demonstrate why COO should not be copied into an ERP record without documentary evidence.
Confirm origin from the physical nameplate, OEM records, or a valid Certificate of Origin.
Q3. Should shipping insurance be purchased?
For a legacy Tricon CPU, insurance is reasonable when replacement scarcity and production downtime exposure are material. The supplier-reported 1.4 kg weight does not reflect the economic importance of the processor.
Photograph the serial number, faceplate, connector, enclosure, and packaging before shipment. Use ESD shielding plus rigid internal cushioning.
Q4. Does the 3004 include the latest firmware pre-loaded?
Do not assume it does. The 3004 is a legacy Version 8 processor, and firmware/application compatibility must be established against the target Tricon system rather than judged from the model number alone.
Before deployment, record the hardware revision and serial number, verify the controller’s Version 8 compatibility, and reconcile the application image and communication-module configuration with the approved plant baseline.
Asset-control note: Maintain TRICONEX 3004 as Tricon Version 8 Main Processor, 1 MB SRAM. The lifecycle record identifies it as an older processor generation, with product availability ending in June 2008. Genuine traceable inventory should therefore be managed as a strategic legacy spare, with strict serial-number, revision, and application-backup controls.



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