Triconex 3806E AO, 6 4–20 mA outputs, 2 20–320 mA outputs

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The user is asking about the Triconex 3806E. The search results confirm that this is a specialized Analog Output module for a Triconex safety system, with a unique mixed-output configuration. The key details are:

• Model: 3806E
• Function: Analog Output (AO)
• Outputs: 6 channels of 4–20 mA and 2 channels of 20–320 mA
• Total Points: 8
• Architecture: Triple Modular Redundancy (TMR)

The most defining feature of the 3806E is its combination of both standard 4–20 mA outputs and high-current 20–320 mA outputs on a single module. The high-current outputs are specifically designed for applications that require more power, such as controlling certain types of actuators or turbomachinery. The module is built on a TMR architecture, which is a core tenet of Triconex safety systems, ensuring the highest level of fault tolerance and reliability.

I have all the necessary information to construct a detailed response, highlighting its unique mixed-output capability, TMR architecture, and its role in a variety of safety-critical applications.

Triconex 3806E Analog Output Module

Brief Product Description

The Triconex 3806E is a Triple Modular Redundant (TMR) Analog Output (AO) module designed for use in Triconex safety instrumented systems (SIS). It provides a unique mixed-output configuration, with 6 isolated output channels generating an industry-standard 4–20 mA signal, and 2 isolated output channels generating a high-current 20–320 mA signal. The module’s TMR architecture ensures exceptional fault tolerance, making it an essential component for critical applications that require a combination of standard and high-power analog control.

• Product Type: Analog Output (AO) Module with mixed ranges
• Signal Type: 6 x 4–20 mA and 2 x 20–320 mA
• Configuration: Triple Modular Redundancy (TMR)
• Total Points: 8 (6 standard, 2 high-power)
• Key Feature: Versatile mixed-output design for a wide range of analog control applications.

A Closer Look at the Triconex 3806E

In safety-critical applications, precise and reliable control is paramount. The Triconex 3806E is designed for exactly this purpose, offering a unique solution that a standard analog output module cannot. Its mixed-output capability allows for a single module to handle both conventional analog control and higher-power applications simultaneously, simplifying system design and reducing the number of modules required.

The core of the 3806E‘s strength lies in its Triple Modular Redundancy (TMR) architecture. It contains three independent sets of circuitry that receive output commands from the system’s main processors. These three circuits then generate an output signal, and the module uses a voting mechanism to ensure the output is based on a consistent, confirmed command. In the event of a fault in one of the circuits, the other two continue to provide the correct output, allowing the system to operate without interruption while a diagnostic alarm is generated. This design provides the ultimate safeguard against single-point failures, ensuring that the module provides error-free, uninterrupted analog control.

The module also features:

• Advanced Diagnostics: Continuous diagnostics monitor the health of each channel, including voltage and current loopback checks. This ensures that a fault in the module or the field wiring is detected immediately, maintaining system integrity.
• High Resolution and Accuracy: With its 12-bit resolution, the module provides precise control over devices like control valves and variable speed drives.
• Hot-Swappable: Like other Triconex I/O modules, the 3806E supports hot-swapping, allowing a faulty module to be replaced online without shutting down the entire system, which is invaluable in continuous processes.

Technical Specifications

Application Areas

The Triconex 3806E is used in any industry that requires high-integrity analog control of a process using both standard and high-power signals. It is particularly suited for applications that involve turbomachinery.

• Turbomachinery Control: The high-current outputs are specifically designed to control certain types of actuators and other devices found on turbines, compressors, and other rotating equipment.
• Emergency Shutdown (ESD) Systems: Used to provide a fail-safe signal to control valves, ensuring a process is safely brought to a shutdown state.
• Burner Management Systems (BMS): For controlling fuel flow to a burner in a safe and controlled manner.
• Process Control: In refineries, petrochemical plants, and power generation facilities, it’s used to precisely control a wide variety of valves, actuators, and other equipment that require a 4-20 mA signal.