DO3401 | Triconex | Tricon 16-Channel Digital Output Relay Module

Product Overview

The Triconex DO3401 serves as a high-integrity digital output interface within the Tricon Triple Modular Redundancy (TMR) architecture. This module manages 16 independent Form-C relay channels, providing dry-contact switching for critical final control elements. It bridges the gap between low-voltage logic and high-power field devices while maintaining strict SIL 3 safety compliance. We guarantee this unit as 100% Brand New and Original factory stock.

Technical Specifications

Engineering Advantages

• TMR Fault Tolerance: The DO3401 integrates directly with the Triconex voting logic. This ensures that a single component failure within the module does not trigger a false trip or fail to execute a safety shutdown, maximizing process uptime in oil, gas, and chemical facilities.

• Universal Load Handling: Unlike standard solid-state outputs, the Form-C relay design handles both AC and DC voltages across a wide spectrum (up to 240VAC). This flexibility allows engineers to control diverse field equipment—from solenoids to motor starters—without adding interposing relays.

• Extreme Environment Resilience: The ruggedized circuitry operates reliably from -40°C to +70°C. This eliminates the need for expensive cabinet cooling or heating systems in geographically remote or high-heat industrial zones.

• Galvanic Protection: 1500V AC channel-to-channel isolation prevents electrical noise and ground loops from propagating between circuits. This protection secures the main processor from field-side surges and electromagnetic interference (EMI).

FAQs

• Can the DO3401 replace older Triconex digital output modules?

  The DO3401 typically replaces legacy relay modules in the Tricon line. However, always verify your existing backplane compatibility and TriStation 1131 software version before hot-swapping to ensure seamless logic integration.

• How does the module handle inductive loads?

  While the 2A rating applies to resistive loads, we recommend installing external suppression (diodes for DC or MOV for AC) when driving high-inductance solenoids to prolong the contact life of the Form-C relays.

• Does this module support hot-swap functionality?

  Yes. In a redundant TMR configuration, you can replace a DO3401 module while the system remains online. The controller automatically re-establishes communication and resumes control without interrupting the process.