Triconex 3806E AO Module | High-Current TMR Analog Output

Product Description

Overview

The Triconex 3806E is a high-performance Analog Output (AO) module tailored for turbomachinery and critical process control. Built on the Triple Modular Redundant (TMR) architecture, this module delivers robust, fail-safe operation for high-current actuators and standard control loops within steam and gas turbine systems. Its unique dual-range output enables both standard 4–20 mA signals and high-current drive up to 320 mA, eliminating the need for separate modules in mixed-signal systems.

Architecture and Design

3806E integrates three independent execution legs with a 2-out-of-3 hardware voting mechanism to determine each channel’s output, ensuring continuous operation even if a single internal leg fails. The module supports hot-swappable installation in redundant system configurations. All outputs share a common return, simplifying wiring for complex turbomachinery applications.

Performance Highlights

Dual-Range Output for Versatile Control

• 6 standard 4–20 mA channels for control valves

• 2 high-current channels (20–320 mA) for turbine actuators or servo drives

• DC-coupled, commoned return design

High Reliability and Safety

• TMR architecture with hardware voting ensures fail-safe operation

• Online replacement supported using hot spare modules

• Leg switch time <10 ms for uninterrupted field device control

Precision and Accuracy

• 12-bit resolution across both current ranges

• Output accuracy <0.25% Full Scale Range (FSR)

• Continuous monitoring and loopback checks ensure output integrity

• External over-voltage protection up to +42.5 VDC

Diagnostics and Monitoring

• Front panel LEDs: PASS, FAULT, ACTIVE, LOAD, PWR1, PWR2

• Detects loss of field power and open-circuit conditions

• Real-time verification of commanded versus actual output current

Technical Specifications

Key Applications

The Triconex 3806E is designed for Turbine Control Systems (TCS), managing high-power hydraulic actuators while simultaneously handling auxiliary control loops. Its dual-range output simplifies complex turbomachinery automation by consolidating standard and high-current signals into a single module.

FAQ

Q: Can the 3806E module be replaced while the system is running?
A: Yes, it supports hot-swappable installation with a redundant configuration.

Q: What types of devices can the high-current channels drive?
A: The two high-current channels (20–320 mA) are intended for hydraulic actuators or large turbine servo controllers.

Q: How precise is the module across its operating range?
A: It maintains <0.25% FSR accuracy across both standard and high-current channels, from 0°C to 60°C.

Q: Is the module compatible with previous Tricon systems?
A: Yes, it supports Tricon v9, v10, and v11 controllers.