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SKU: 3664

Triconex 3664 Invensys Trusted Dual Digital Output Module

The Triconex 3664 is a 24-channel, 24 VDC Dual Digital Output Module for TMR safety systems. SIL 3-certified and featuring 24 isolated outputs with supervised loopback diagnostics, it provides high-integrity control for solenoid valves and actuators in critical emergency shutdown (ESD) applications.

Triconex 3664 Invensys Trusted Dual Digital Output Module

Technical Overview

The Triconex 3664, manufactured by Invensys (now Schneider Electric), operates as a high-integrity, 24 VDC Dual Digital Output Module designed specifically for the Tricon Triple Modular Redundant (TMR) safety system. This module actively manages 24 isolated output channels, delivering reliable control signals to field-side actuators such as solenoid valves, relays, and motor starters. By utilizing a specialized “Dual” circuit architecture, the 3664 provides a sophisticated balance between high availability and fail-safe performance for critical safety loops. In essence, it acts as the primary executive interface of the safety controller, thereby ensuring that emergency shutdown (ESD) commands execute with absolute certainty even in the event of internal component failures. Moreover, its design is optimized to prevent nuisance trips that could lead to costly production downtime.

Key Features and Specifications

  • Manufacturer: Invensys Triconex (Schneider Electric)
  • Product Range: Tricon TMR Safety System
  • Model Identifier: 3664
  • Output Type: Digital Output, Dual (Supervised)
  • Nominal Voltage: 24 VDC
  • Number of Channels: 24 Isolated Channels
  • Output Current: Optimized for standard industrial solenoid and relay loads
  • Safety Rating: Certified for SIL 3 safety-instrumented functions (SIF)
  • Diagnostics: Integrated “Output Loopback” and field-side load supervision

Application and Reliability

Safety engineers prioritize the Triconex 3664 for demanding applications such as Emergency Shutdown (ESD) valves, Fire and Gas (F&G) beacons, and critical interlock systems. The module provides the ruggedized performance necessary to endure the harsh electromagnetic and thermal environments typical of refineries and offshore platforms. In conjunction with its TMR core, the 3664 facilitates a highly available control strategy, thereby preventing the unintended loss of critical safety functions. In a similar fashion, the module complies with strict international safety standards (IEC 61508), ensuring its suitability for the most hazardous industrial processes.

Because the module features a standardized slot-in interface, it simplifies the hardware installation process and ensures a secure mechanical fit within the Tricon chassis. By virtue of this modularity, engineers can create flexible safety architectures that are easily updated as plant requirements change. Ultimately, the 3664 delivers the stable 24 VDC power and high-speed switching required to protect personnel and high-value industrial assets, thus safeguarding the long-term productivity of the facility. In summary, this dual digital output module serves as a reliable and indispensable execution component for any high-performance Triconex architecture.