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TRICONEX 3805H Product Specification
Product Overview：TRICONEX 3805H
The TRICONEX 3805H is a high-reliability 24V DC digital input module designed for safety-critical industrial automation systems, specifically as part of TRICONEX’s Tricon Series of fault-tolerant control systems. Engineered to meet the rigorous demands of safety instrumented systems (SIS), the TRICONEX 3805H serves as a vital component in monitoring discrete signals from field devices such as switches, sensors, and contactors, ensuring real-time data integrity in environments where failure could lead to severe consequences. As a triple-modular redundant (TMR) device, the TRICONEX 3805H integrates three independent signal paths, providing self-diagnostic capabilities and fault tolerance that are critical for industries like oil and gas, chemical processing, and power generation.
Part of TRICONEX’s legacy 3800 Series, the TRICONEX 3805H supports 16 isolated digital input channels, each capable of detecting 24V DC signals with built-in surge protection to mitigate electrical noise and transient disturbances. Its compact design (171 mm x 102 mm x 203 mm) and rack-mountable form factor enable seamless integration into TRICONEX’s Tricon chassis, where it works in conjunction with CPU and output modules to form a complete safety system. The module’s compliance with SIL 3 (IEC 61508) and IEC 61511 standards ensures it can be deployed in the highest-risk applications, such as emergency shutdown (ESD) systems and fire and gas (F&G) detection networks.
In automation architectures, the TRICONEX 3805H acts as the frontline interface for discrete state monitoring, converting physical switch positions or sensor outputs into digital signals processed by the Tricon controller. Its dual-channel design per input (with optional voting logic) enhances system reliability by requiring consensus between two out of three channels to trigger a control action, reducing the likelihood of spurious trips or missed alarms. By combining robust hardware with advanced diagnostic features, the TRICONEX 3805H minimizes unplanned downtime, ensures regulatory compliance, and safeguards personnel and assets in mission-critical operations.
Technical Specifications：TRICONEX 3805H
| Parameter Name | Parameter Value |
|---|---|
| Product Model | TRICONEX 3805H |
| Manufacturer | TRICONEX |
| Product Type | 24V DC Digital Input Module (TMR) |
| Channels | 16 isolated channels |
| Input Voltage | 24V DC ±15% (sink/source compatible) |
| Physical Dimensions | 171 mm (W) × 102 mm (H) × 203 mm (D) |
| Weight | 1.2 kg |
| Redundancy | Triple Modular Redundancy (TMR) |
| Safety Integrity Level | SIL 3 (IEC 61508, IEC 61511 certified) |
| Operating Temperature | -40°C to +70°C |
| Humidity | 5% to 95% non-condensing |
| Installation | Rack-mounted in Tricon chassis (requires backplane connection) |
TRICONEX 3805H
Main Features and Advantages
Triple Modular Redundancy (TMR): The TRICONEX 3805H’s TMR architecture ensures fault tolerance by duplicating each input channel three times, with built-in diagnostics to detect and isolate failures in individual channels. This design eliminates single points of failure, making it suitable for SIL 3 applications where high availability is non-negotiable.
Enhanced Signal Isolation: Each of the 16 input channels features optical isolation, protecting the control system from ground loops and voltage spikes commonly encountered in industrial environments. This isolation enhances noise immunity, ensuring accurate signal representation even in harsh electromagnetic interference (EMI) conditions.
Real-Time Diagnostics: The module continuously monitors channel health, power supply, and temperature, with fault conditions reported via front-panel LED indicators and the Tricon controller’s human-machine interface (HMI). Diagnostic data includes channel-specific status, signal quality metrics, and self-test results, enabling proactive maintenance and reducing mean time to repair (MTTR).
Flexible Configuration: The TRICONEX 3805H supports configurable input filtering (0.1–32 ms) to suppress transient noise, as well as user-defined trip thresholds and debounce timers. This flexibility allows engineers to tailor the module to specific application requirements, such as high-speed switching in machinery control or slow-changing states in process monitoring.
Long-Life Industrial Design: Constructed with rugged components and a conformal-coated circuit board, the TRICONEX 3805H withstands vibration, shock, and extreme temperatures, ensuring reliable operation in offshore platforms, refineries, and other harsh environments. Its long lifecycle support (typically 10+ years) makes it ideal for legacy systems requiring minimal upgrades.
TRICONEX 3805H
Application Areas
The TRICONEX 3805H is widely deployed in industries where safety and reliability are paramount:
-
Oil and Gas:
- Upstream/Offshore: Monitors wellhead emergency shutdown valves, pressure switches, and safety door interlocks in offshore platforms, ensuring rapid response to leaks or equipment malfunctions.
- Downstream/Refineries: Integrates with fire and gas detection systems, activating alarms or shutdown sequences based on discrete signals from smoke detectors or gas sensors.
-
Chemical and Petrochemical:
- Manages batch processing safety interlocks, such as reactor lid position switches and pump status indicators, to prevent unauthorized operation or hazardous material releases.
- Supports SIL 3-certified ESD systems, where the module’s TMR design ensures reliable detection of overpressure or temperature excursions.
-
Power Generation:
- Monitors turbine bypass valve positions, generator breaker status, and switchgear contacts in combined cycle power plants, enabling precise coordination between control systems and field devices.
- Used in nuclear power applications for monitoring safety-related discrete inputs, compliant with stringent regulatory requirements.
-
Heavy Manufacturing:
- Controls safety barriers and emergency stop buttons in automotive assembly lines, ensuring worker safety and compliance with ISO 13849-1 performance levels.
- Monitors conveyor belt alignment switches and material level sensors in mining operations, preventing equipment damage from misalignment or overloading.
Related Products
- TRICONEX 3801H: A 125V DC digital input module with similar TMR architecture, designed for high-voltage discrete signal monitoring in legacy systems.
- TRICONEX 3802H: A 24V DC digital output module, often paired with the TRICONEX 3805H to form complete control loops, providing actuating signals to valves or motors.
- TRICONEX 3700 Series: Analog input/output modules (e.g., 3704E, 3706E) that complement the 3805H in hybrid systems requiring both discrete and continuous signal processing.
- TRICONEX 4351B: A Tricon CPU module that serves as the processing core for the safety system, integrating data from the 3805H and executing control logic.
- TRICONEX 3008: A power supply module designed for Tricon chassis, ensuring stable power delivery to the 3805H and other modules in redundant configurations.
TRICONEX 3805H
Installation and Maintenance
Pre-installation Preparation:
Before installing the TRICONEX 3805H, ensure the following:
Before installing the TRICONEX 3805H, ensure the following:
- Verify the chassis power supply (24V DC) and backplane compatibility with the Tricon system.
- Use TRICONEX’s Tricon Engineering Workstation (TEW) software to configure channel parameters (e.g., filtering, voting logic) and assign input addresses.
- Ensure proper grounding of the chassis to mitigate EMI and protect against voltage surges.
Maintenance Recommendations:
- Routine Checks: Inspect front-panel LEDs weekly to confirm normal operation (e.g., green “Power” and “Health” indicators; amber “Fault” for channel errors).
- Signal Verification: Annually test each input channel using a calibrated signal source to ensure voltage detection accuracy and response time.
- Firmware Updates: Periodically update the module’s firmware via TEW to incorporate security patches or compatibility enhancements with newer Tricon software versions.
- Environmental Cleaning: Every six months, remove dust from the module’s vents in dusty environments to prevent overheating, using compressed air or a static-safe brush.
TRICONEX 3805H
Product Warranty
Our company provides a one-year quality warranty for the TRICONEX 3805H, covering all non-human-induced hardware defects, including faulty channels, power supply failures, or mechanical issues. During the warranty period, any defective module will be replaced promptly to minimize downtime. For discontinued models like the TRICONEX 3805H, our extensive inventory of legacy TRICONEX parts and global supply chain network ensure quick turnaround for urgent replacements. Beyond the warranty period, we offer specialized repair services and technical support to help maintain your system’s integrity, backed by our 17 years of expertise in industrial control spare parts distribution.
Contact Information:
Whatsapp: +86 18859254943
E-mail: sales@ygplc.com
Whatsapp: +86 18859254943
E-mail: sales@ygplc.com
Note: This product description is based on technical data derived from TRICONEX’s official specifications and industry applications. For detailed installation guidelines or compliance documentation, refer to the TRICONEX 3805H user manual or contact our technical support team for personalized assistance.
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