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2401
2401

Triconex 2401 Tricon v9 / v10 Digital Output Signal Module

  • Model: 2401
  • Brand: Triconex / Invensys (Schneider Electric)
  • Series: Tricon Triple Modular Redundant (TMR) Safety Architecture (v9 / v10 Chassis)
  • Core Function: Controls safety-critical final elements (solenoid valves, relays, trip breakers) via 16 supervised 24V DC digital outputs using internal 2-out-of-3 (2oo3) voted switches to ensure zero single-point failures.
  • Product Type: 16-Point 24V DC TMR Digital Output Module
  • Key Specs: 16 Digital Outputs | 24V DC Nominal | TMR Quad-Switch Output Topology | Automatic Ring-Readback Diagnostics | Hot-Swappable
  • Condition: New Original / New Surplus (Zero operational hours, original protective packaging)
  • Inventory Status: Essential Safety Instrumented System (SIS) component; critical spare part for Emergency Shutdown (ESD), Fire & Gas (F&G), and High-Integrity Pressure Protection Systems (HIPPS).
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Description

3. Key Technical Specifications

Parameter Specification Value
Catalog Part Number 2401
Manufacturer Triconex (Schneider Electric / Invensys)
System Compatibility Tricon High-Density Chassis (v9 / v10 TMR Systems)
Number of Outputs 16 discrete channels
Nominal Output Voltage 24V DC (20 to 30V DC operating range)
Output Current Rating 0.5 A per channel continuous
Internal Architecture Triple Modular Redundant (3 independent output channels with 2oo3 voting matrix)
Switching Topology Patented Quad-Switch structure (guarantees energize-to-trip and de-energize-to-trip safety integrity)
Isolation 1000V DC channel-to-backplane optical isolation
Hot Swappable Yes (supports online replacement without interrupting active process loops)

4. Product Introduction & Supply Chain Strategy

The Triconex 2401 is a 16-point 24V DC discrete digital output card designed specifically for Tricon Safety Instrumented Systems (SIS). Built on a Triple Modular Redundant (TMR) architecture, the 2401 routes control commands from three main processors through an integrated “quad-switch” voting output stage. This physical voting architecture guarantees that a single component failure cannot cause a spurious trip (fail-safe) or prevent a safety shutdown when commanded (fail-dangerous).

This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All internal output switches, diagnostics circuitry, and backplane interface buses undergo complete factory testing to guarantee SIL3 (Safety Integrity Level 3) readiness.

In high-consequence process plants, an uncommanded failure of a digital output module can trigger an emergency valve closure, causing millions in unplanned downtime. Sourcing verified New Surplus Triconex 2401 modules ensures instant replacement pathing during maintenance outages or field component failures without long manufacturer lead times.

2401

2401

5. Installation & Configuration Guide

Safety Instrumented System Precaution

Before inserting or pulling any output module on a live Tricon chassis, verify system key-switch state and confirm that adjacent module slots are active to prevent triggering interlock safety trips.

1

System Diagnostic Verification

Prerequisite

1.System Diagnostic Verification:Prerequisite.

Review system health in TriStation 1131 software. If performing an online hot-swap, verify that the redundant partner module in the adjacent slot is healthy and active.

2

Old Module Extraction

Removal

2.Old Module Extraction:Removal.

Loosen the top and bottom retaining thumbscrews. Pivot the top and bottom ejector levers outward to disengage backplane pins, then pull the module straight out along guide rails.

3

Inserting New Module

Hardware Setup

3.Inserting New Module:Hardware Setup.

Align the side guides of the Triconex 2401 card with the target slot in the main or expansion chassis. Slide the card inward until the ejector levers touch the chassis frame.

4

Backplane Engagement

Seating

4.Backplane Engagement:Seating.

Push both ejector levers inward simultaneously until they lock flush against the module faceplate. Tighten retaining thumbscrews to complete ground connection.

5

TriStation Diagnostic Check

Verification

5.TriStation Diagnostic Check:Verification.

Verify the front-panel PASS LED lights up solid green. Inspect TriStation 1131 software to ensure point status and output readback circuits report zero fault flags across all 16 channels.

6. System Compatibility & Maintenance Notes

The Triconex 2401 works within high-density Tricon safety racks:

  • Programming Environment: Configured and diagnosed using TriStation 1131 Developer software.
  • Redundancy Modes: Supports single-slot placement or dual-slot configurations for online hot-spare backup.
  • Terminal Panels: Connects to standard Tricon External Termination Panels (ETP) via heavy-duty multi-conductor interface cables.

7. Frequently Asked Questions (FAQ)

Q: Is this Triconex 2401 module brand new or pulled from a decommissioned safety rack?

A: This product is a Brand New Surplus unit. It is not used, not pulled from a decommissioned plant, and not refurbished. All modules undergo diagnostic verification to guarantee SIL3 system compliance.

Q: What is the main difference between the Triconex 2351 and the 2401?

A: The 2351 is a 16-point digital input module (reads field contacts/switches), whereas the 2401 is a 16-point digital output module (drives field solenoids, relays, and actuators).

Q: Can the 2401 module be hot-swapped while the system is under power?

A: Yes. Triconex TMR systems fully support online hot-swapping. When placed in a dual-slot configuration, the partner module seamlessly maintains field output control during replacement.

Q: What warranty is provided with this New Surplus output module?

A: We supply this module with a full 1-year functional replacement warranty from the date of shipment to guarantee plant reliability.

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