Description
The Triconex 3806E is an Analog Output Module manufactured by Schneider Electric (Triconex), designed specifically for use in Tricon Safety Instrumented Systems (SIS). It is widely utilized in high-integrity safety applications across industries like oil and gas, petrochemicals, and power generation where fault tolerance and reliability are critical.
Key Specifications
| Feature | Specification Details |
| Manufacturer | Triconex (Schneider Electric) |
| Module Type | Analog Output (AO) Module |
| Output Channels |
Total 8 points per module:
• 6 channels of 4–20 mA current output
• 2 channels of 20–320 mA high-current output |
| Compatible Termination Panel | Typically interfaces with Model 9863-710 |
| Accuracy | $\pm0.1\%$ of span |
| Operating Temperature | $0^\circ\text{C}$ to $60^\circ\text{C}$ ($32^\circ\text{F}$ to $140^\circ\text{F}$) |
| Relative Humidity | 5% to 95% (non-condensing) |
| Approximate Dimensions | 4.4 cm $\times$ 16.9 cm $\times$ 22 cm |
Core Features & Application
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Triple-Modular Redundancy (TMR) Architecture: Like other Triconex components, the 3806E is built to support TMR systems, ensuring uninterrupted process operation and safety even in the event of a single-point component failure.
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Dual Output Ranges: Combines standard industrial control loops (4–20 mA) with high-current control outputs (20–320 mA) on a single module, making it versatile for actuators, valves, and other field devices.
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Diagnostics: Features extensive on-board self-diagnostics that continuously monitor
3806E
Product Overview
3806E is the 8-Channel Mixed Range Analog Output Module developed by Triconex (Schneider Electric) for the Tricon CX Fault-Tolerant TMR Safety Instrumented System.
It receives triple-voted control commands from main processors, converts digital control values into analog current signals to drive field actuators such as control valves, hydraulic servo proportional valves.
Channel allocation: 6 × 4–20mA standard analog outputs + 2 × 20–320mA high-current outputs. The high-current channels are specially designed for hydraulic servo valves requiring large driving current.
Adopts Triple Modular Redundant (2oo3 voting) architecture, certified to IEC 61508 SIL3, widely deployed in ESD, turbine control and burner management safety loops. Installed in the 8120X main control chassis.
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | 3806E |
| Module Type | Mixed-Range Analog Output Module |
| Applicable Platform | Tricon CX Safety Rack (8120X) |
| Channel Configuration | 6 × 4–20mA + 2 × 20–320mA |
| Load Capacity
• 4–20mA channels • 20–320mA channels |
Max 825 Ω
Max 50 Ω |
| Signal Accuracy | ≤ ±0.25% FS (0~70℃) |
| Update Cycle | Configurable, minimum 20ms |
| Architecture | Triple Modular Redundancy (A/B/C independent channel voting) |
| Backplane Bus | TriBus triple redundant internal bus |
| Power Supply | Powered by rack backplane |
| Hot Swap | Supported within Tricon CX rack |
| Operating Temperature | -30 ℃ ~ +70 ℃ |
| Ambient Humidity | 5%–95% non-condensing |
| Protection Class | IP20 (cabinet installation) |
| Safety Certification | IEC 61508 SIL3, FM, CE |
| Front Panel LEDs | OK, Fault status indicators |
| Supporting Termination Unit | Matched external field terminal board |
| Engineering Software | Triconex Workbench |
| Spare Part Status | OEM production discontinued; surplus new & refurbished modules available |
Key Features
- Mixed dual-range analog output: standard transmitters and high-current hydraulic proportional valves can be driven by one module
- Independent triple redundant signal paths; single channel hardware failure will not cause spurious trip or loss of control output
- Built-in channel diagnostic function, detects open circuit, overload and internal circuit abnormality
- Overcurrent and over-temperature protection for each output channel
- Mechanical keyed connector prevents misplugging incompatible I/O modules
- Optimized anti-interference PCB design, stable operation under strong electromagnetic interference in power and chemical plants
- Exclusive hardware for Tricon CX platform; cannot be interchanged with older Tricon 3805 / 3805E modules
- Supports continuous closed-loop process regulation for safety critical control loops
