Triconex 3805H Analog Output Modules
Product Overview
The Triconex 3805H Analog Output Module is an integral component of the Tricon™ fault-tolerant safety and control system. Designed for applications that demand high reliability and safety, such as those found in process industries, the 3805H provides high-integrity analog output signals to control actuators, valves, or other final elements in safety-critical systems.
Built with Triconex’s signature triple-redundant architecture, the 3805H ensures continuous and accurate analog output even in the presence of faults. It supports redundant and hot-replaceable configurations, minimizing system downtime and maintaining operational integrity. This module is SIL 3 certified, aligning with IEC 61508 standards for functional safety.
Key Features
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Triple-Redundant Design: Ensures continuous output signal delivery even in case of hardware faults.
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High Signal Accuracy: Delivers precise 4–20 mA analog output signals for critical control applications.
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Fault Detection and Diagnostics: Includes automatic fault detection, isolation, and notification to maintain system reliability.
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Hot-Swappable: Can be replaced without shutting down the system, supporting high availability.
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SIL 3 Certified: Suitable for safety instrumented systems requiring high integrity and compliance with IEC 61508.
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Channel Isolation: Each analog channel is electrically isolated to protect the system and reduce signal interference.
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Configurable Output Ranges: Supports 4–20 mA outputs with optional 0–20 mA or 1–5 V depending on the system setup.
Technical Specifications
3.1 Dimensions and Weight
| Item | Specification |
|---|---|
| Dimensions | 114.3 ×127 × 107.95 mm |
| Weight | 1.5 kg |
3.2 General Characteristics
| Item | Specification |
|---|---|
| Module Type | Analog Output Module (AO) |
| Channels | 8 Analog Output Channels |
| Output Type | 4–20 mA (current loop) |
| Safety Rating | SIL 3 (per IEC 61508) |
| Redundancy | Triple Modular Redundancy (TMR) |
3.3 Performance and Accuracy
| Item | Specification |
|---|---|
| Output Resolution | 12-bit DAC |
| Accuracy | ±0.1% of full scale |
| Update Rate | ≤ 250 ms/channel |
| Load Resistance | 0 to 750 Ohms |
3.4 Electrical and Environmental
| Item | Specification |
|---|---|
| Power Supply | Supplied by Tricon base chassis |
| Operating Temp. | 0°C to +60°C |
| Storage Temp. | -40°C to +85°C |
| Relative Humidity | 5% to 95% non-condensing |
3.5 Diagnostics and Fault Handling
| Item | Specification |
|---|---|
| Channel Diagnostics | Per-channel fault reporting |
| System Integration | Full diagnostics via Tricon controller |
| Hot-Swap Capability | Yes |
3.6 Installation and Compatibility
| Item | Specification |
|---|---|
| Chassis Mounting | Standard Tricon backplane |
| I/O Cable Interface | Connected via terminal block or cable assembly |
| Compatible Systems | Tricon v10 and later platforms |
Industry Applications
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Oil & Gas: Used in emergency shutdown (ESD) systems, burner management, and compressor control.
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Chemical and Petrochemical: Ideal for reactor control, overpressure protection, and dosing systems.
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Power Generation: Manages analog control outputs for turbine regulation and balance-of-plant systems.
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Pharmaceutical: Applied in batch control, precision dosing, and environmental control systems.
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Water and Wastewater: Controls chemical dosing pumps, actuator positioning, and flow control valves.
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Pulp & Paper: Used in process line control and chemical injection systems for enhanced safety and precision.
The Triconex 3805H Analog Output Module offers a robust and fault-tolerant solution for safety-critical analog output applications. With high accuracy, full diagnostics, and SIL 3 compliance, it meets the rigorous demands of modern industrial safety systems while delivering reliable performance and ease of integration.
