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Product Overview
The Triconex 3805EN Analog Output Module is a high-performance, safety-rated analog output module specifically designed for use in Triconex Tricon™ safety instrumented systems (SIS). Manufactured by Schneider Electric under the Triconex brand, the 3805EN module plays a crucial role in providing reliable and precise analog signals to field devices such as actuators, control valves, and indicators in safety-critical and process automation environments.
It is engineered to meet rigorous safety standards, including TÜV certification for SIL 3, and is often deployed in the oil & gas, petrochemical, power generation, water treatment, and pharmaceutical industries. The module supports redundant fault-tolerant configurations, ensuring process integrity and safety even under fault conditions.
Product Specifications
| Parameter | Specification |
|---|---|
| Model Number | Triconex 3805EN Analog Output Module |
| Output Type | Analog (current output) |
| Output Range | 0–20 mA or 4–20 mA (software configurable) |
| Channel Count | 8 independent channels |
| Accuracy | ±0.1% of full scale |
| Isolation | Channel-to-channel and channel-to-backplane isolation |
| Diagnostic Features | Built-in loop monitoring, channel diagnostics, open loop detection |
| Redundancy Support | Yes – supports triple modular redundancy (TMR) |
| Power Supply Voltage | Supplied through the Tricon main chassis |
| Operating Temperature | -20°C to +60°C (-4°F to +140°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Humidity | 5% to 95% non-condensing |
| Shock Resistance | 10 g (operating), 30 g (non-operating) |
| Vibration Resistance | 1 g at 5–100 Hz |
| Certifications | TÜV (SIL 3), CE, ATEX, CSA, IEC 61508 |
| Dimensions (W x H x D) | 490 x 490 x 68 mm |
| Weight | 2.27 kg |
| Chassis Compatibility | Compatible with standard Tricon mainframe chassis |
| Communication Interface | Backplane interface to Tricon controller |
| Hot Swappable | Yes |
Applications
The Triconex 3805EN Analog Output Module is widely adopted across industries where functional safety and system reliability are non-negotiable. Common application areas include:
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Emergency Shutdown Systems (ESD)
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Burner Management Systems (BMS)
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Fire & Gas Detection Systems
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Turbine Control Systems
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Compressor Anti-Surge Control
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Boiler Control Systems
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Batch Process Control in Pharmaceuticals
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Pipeline and Tank Farm Automation
Its analog outputs provide precise control signals to regulate flow control valves, variable speed drives, actuators, and other field instruments critical for safe operation and optimal process performance.
Advantages
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Certified for SIL 3 Safety Integrity Level
Complies with IEC 61508 and TÜV certified, guaranteeing high safety performance. -
High Channel Density and Precision
Provides 8 isolated analog output channels with precise 0–20mA or 4–20mA control. -
Triple Modular Redundancy (TMR) Compatibility
Supports fault-tolerant configurations with triple redundancy for maximum reliability. -
Advanced Diagnostics
Real-time monitoring and diagnostics ensure immediate fault detection and predictive maintenance capability. -
Hot-Swappable Design
Enables replacement during system operation without shutdown, minimizing downtime. -
Rugged Build for Industrial Environments
Built to operate reliably under harsh environmental conditions — extreme temperature, vibration, and humidity. -
Seamless Integration
Integrates easily into the Triconex platform with backplane communication and software configurability.
Frequently Asked Questions (FAQ)
-
Q: What types of signals does the 3805EN output?
A: The module outputs analog current signals in either 0–20 mA or 4–20 mA range, configurable via system software. -
Q: Can the 3805EN module be replaced without shutting down the system?
A: Yes, it is hot-swappable, allowing safe replacement while the system remains operational. -
Q: Is the 3805EN suitable for safety instrumented systems?
A: Absolutely. It is TÜV-certified for SIL 3 applications and is widely used in safety-critical systems. -
Q: How many channels does the 3805EN module support?
A: It supports 8 independent and isolated analog output channels. -
Q: What kind of diagnostics does the module support?
A: It includes loop monitoring, open loop detection, and other real-time diagnostic features. -
Q: What are the power requirements for this module?
A: It is powered via the Tricon main chassis; no external power supply is required. -
Q: Can the module be used in redundant configurations?
A: Yes, it fully supports Triple Modular Redundancy (TMR) for critical applications. -
Q: What is the typical use case in the oil & gas industry?
A: It’s often used for analog control of valves and actuators in emergency shutdown and process control systems. -
Q: What makes the 3805EN different from other analog output modules?
A: Its combination of safety certification, redundancy, precision, and diagnostics makes it ideal for critical control. -
Q: Is there software support for configuring this module?
A: Yes, the module is configured and managed via Triconex’s engineering tools integrated with the control system.
Related Triconex Models (Same Series or Similar Functionality)
| Model Number | Description | Output Type | Channels | TMR Support |
|---|---|---|---|---|
| 3805E | Analog Output Module (legacy version) | Analog (mA) | 8 | Yes |
| 3700A | Analog Input Module | Analog (mA/V) | 32 | Yes |
| 3504E | Digital Output Module | Digital (Relay) | 32 | Yes |
| 3564 | High-Density Digital Output Module | Digital (24 VDC) | 64 | Yes |
| 3008 | Main Processor Module | N/A | N/A | Yes |
| 3625 | Digital Input Module | Digital (24 VDC) | 32 | Yes |
Popular Triconex Models from Schneider Electric
| Model Number | Description | Type | Application |
|---|---|---|---|
| 3008 | Tricon Main Processor Module | Processor | Safety logic & I/O control |
| 3721 | Analog Input Module | Analog Input | Process variable sensing |
| 3501T | Digital Input Module | Digital Input | Signal acquisition |
| 3625 | Digital Input Module | Digital Input | On/off monitoring |
| 3564 | Digital Output Module | Digital Output | Control output actuation |
| 3700A | Analog Input Module | Analog Input | Monitoring and control |
