TRICONEX 4329 | Safety System Module

Unboxing & Physical Snapshot

• Manufacturer: TRICONEX / Invensys
• Model: 4329
• Product type: Network Communication Module (NCM)
• System application: Tricon safety instrumented system
• Network interfaces: 2 × BNC Ethernet ports using 50-ohm RG58 coaxial cable
• Auxiliary interfaces: 2 × 15-pin D-connectors for external transceivers; documentation identifies these as reserved/not used on the applicable configuration.
• Serial interface: 1 × RS-232-compatible port
• Estimated packed weight: Approximately 3 kg based on a commercial shipping listing; use the measured packed weight for the freight document.
• Estimated shipping package: Approximately 49 × 45.3 × 6.8 cm from the same commercial listing; treat this as a freight estimate, not an OEM mechanical specification.
• What’s in the box: 4329 NCM module; network cables, terminators, transceiver accessories, and manuals only when specifically listed on the purchase order.
• Front indicators: PASS, FAULT, ACTIVE, TX/RX indicators for the network ports, and COMM/TX/RX indication for the serial interface.

Product Introduction

The TRICONEX 4329 is the Network Communication Module that provides a Tricon system with external Ethernet communication capability. It uses two 10 Mbps IEEE 802.3 BNC interfaces and 50-ohm RG58 thin coaxial cable; NET 1 is intended for Tricon-to-Tricon peer communication and time synchronization, while NET 2 supports external-host communication.

This is legacy networking hardware, and its physical connectors immediately distinguish it from modern Ethernet modules. The two BNC ports, 15-pin D-connectors, and RS-232 interface should all be inspected during receiving (connector condition matters because replacement coaxial and termination hardware is increasingly difficult to source). The 4329 is documented for Tricon v10.x or earlier systems.

Core Technical Specifications

TRICONEX 4329

The OEM-derived documentation specifies 10 Mbps communication and two BNC ports using RG58 50-ohm thin cable. NET 1 is reserved for the Tricon safety network functions, while NET 2 provides the external-network path.

The module’s logic power consumption is below 20 W, and the network/RS-232 interfaces have 500 VDC isolation. These values are useful when checking cabinet thermal loading and communication-interface segregation.

? Global Compliance & Industry Certifications

For a safety-system communication module, separate the module certification from the certification of the complete Tricon installation.

• CE Mark: Verify the applicable Invensys/Triconex conformity documentation for the exact hardware revision.
• UL/cUL: Confirm the certification record applicable to the 4329 and the installed Tricon system.
• EMC: Cabinet grounding, coaxial cable routing, shielding, and power-system installation affect the final compliance condition.
• ATEX/IECEx: Do not assume that an individual 4329 module is independently approved for direct hazardous-area installation. Verify the complete certified system and installation arrangement.
• Marine approvals: DNV or equivalent approval should only be recorded when supported by documentation for the exact configuration.
• Functional safety: The 4329 operates within the Tricon safety-system architecture, but the communication module itself should not be treated as independent evidence that a particular safety instrumented function has achieved a required SIL.

One important distinction: NET 1 and NET 2 do not have identical application roles. NET 1 is associated with peer-to-peer and time-synchronization functions, whereas NET 2 handles external host applications and TSAA communication.

Verify specific lot certifications with OEM.

? Long-Term Storage & Asset Preservation Guide

Protect the BNC connectors. Keep the module in its original ESD shielding bag and install protective caps over exposed coaxial connectors where available. Do not allow dust, metal particles, or oxidation products to accumulate on the BNC contact surfaces.

Control warehouse humidity below 60% RH where practical. This is particularly important for a legacy module containing multiple external communication interfaces; condensation and connector oxidation can cause intermittent network faults that are difficult to reproduce during bench testing.

Preserve the communication architecture with the spare. Record the target Tricon version, 4329 hardware revision, serial number, network assignment, coaxial termination arrangement, and any associated TriStation/TSAA configuration. The 4329 is intended for Tricon v10.x or earlier, so system compatibility should be checked before emergency deployment.

Before installation, inspect every BNC connector, 15-pin connector, RS-232 connector, retaining hardware, and front-panel LED window. Do not use contact cleaner indiscriminately on the PCB or connectors; follow the OEM maintenance procedure.

TRICONEX 4329

Physical Installation Prerequisites

• Install the 4329 in the specified Tricon chassis slot and verify the applicable system revision first.
• Treat the module as Tricon chassis hardware, not as a generic Ethernet interface.
• Ensure the module is mechanically secured and fully seated in the backplane.
• Inspect both BNC connectors before attaching RG58 coaxial cable.
• Use the specified 50-ohm thin coaxial cable and compatible BNC termination hardware.
• Maintain separation between communication cabling and high-energy motor, VFD, and contactor wiring.
• Provide adequate cabinet ventilation; the published logic-power requirement is less than 20 W.
• As a preliminary cabinet practice, preserve approximately 50 mm around ventilation paths, unless the applicable Tricon chassis drawing specifies another clearance.
• Maintain protective-earth continuity through the Tricon cabinet/chassis grounding system.
• Verify that NET 1 and NET 2 are connected to their intended network functions.
• Do not connect NET 1 to an external plant Ethernet segment simply because it uses an Ethernet electrical interface; its documented role is the Tricon peer/time-synchronization network.
• Verify NET 2 configuration before connecting external hosts, TriStation equipment, or other network services.
• Confirm the RS-232 interface requirement before connecting any serial equipment.
• After replacement, check PASS/FAULT/ACTIVE and TX/RX indications and perform the applicable Tricon communication diagnostics.

Buyer’s FAQ

What HS tariff code should be used for TRICONEX 4329?

A commercial listing identifies 8537101190, but that is only a supplier-provided classification reference and should not be treated as a universal customs ruling. Have the customs broker classify the 4329 according to its actual function as a Network Communication Module and the importing country’s tariff schedule.

What should I declare as the Country of Origin?

Use the actual COO supported by the unit and traceability documentation. One commercial listing identifies the origin as the United States, but this must be verified against the specific serial number and manufacturer documentation before being placed on a commercial invoice.

Is shipping insurance necessary?

For a legacy Tricon communication module, insurance is advisable when replacement cost or SIS downtime exposure is significant. Use ESD shielding, impact protection, and a rigid carton; protect the BNC connectors from mechanical loads during transport.

Does the 4329 have the latest firmware?

Do not assume so. The 4329 is a communication module rather than the Tricon main processor, and system compatibility depends on the module revision and Tricon software/system generation. The planning documentation identifies 4329/4329G and specifies compatibility with the applicable Tricon versions.

Inventory-control recommendation: Record TRICONEX 4329 separately from 4329G. Although both belong to the NCM family, the exact hardware identity, system version, network configuration, and connector arrangement should be verified before treating one as a direct emergency replacement for the other.