Triconex 3805H

Description

Triconex 3805H

1. Product Overview

2. Key Specifications

Parameter	Details
Input Channels	16 isolated channels (configurable for voltage/current inputs)
Signal Types	– Current: 4–20 mA (with HART® compatibility) – Voltage: 0–5 V, 1–5 V, etc.
Resolution	16-bit analog-to-digital conversion
Accuracy	±0.05% of full-scale (typical)
Redundancy	TMR architecture (triple modular redundancy)
Safety Certification	SIL 3 (IEC 61508/61511), ISA 84.00.01 compliant
Update Rate	<10 ms (per channel, typical)
Operating Temperature	-40°C to +70°C
Compatibility	Triconex TriStation™ systems, Tricon EX/TSA platforms
Physical Dimensions	Standard rack-mount form factor (fits Triconex I/O chassis)

Triconex 3805H

3. Features and Advantages

• Triple Modular Redundancy (TMR)
  • Three independent signal paths for each channel, with built-in voting logic to ensure data integrity. Faults in one channel are masked by the redundant channels, eliminating single points of failure.
• HART® Protocol Support
  • Enables bidirectional communication with HART-compatible field devices for configuration, diagnostics, and asset management without disrupting analog signal measurement.
• Fail-Safe and Diagnostics
  • Channels can be configured to default to a safe state (e.g., high/low value) in case of faults.
  • Comprehensive self-diagnostics (BIST) monitor channel health, wiring faults (open/short circuits), and signal validity in real time.
• Hot-Swappable Design
  • Allows module replacement without powering down the system, reducing downtime in live industrial environments.
• High Noise Immunity
  • Shielded isolation and EMC/EMI compliance ensure reliable performance in noisy industrial settings.
• Flexible Configuration
  • Adjustable input ranges, filtering, and scaling via Triconex TriStation™ software.

4. Applications

• Process Control: Monitoring temperature, pressure, flow, and level in chemical/petrochemical plants.
• Safety Instrumented Systems (SIS): Emergency shutdown (ESD) systems, burner management systems (BMS), and critical alarm monitoring.
• Condition Monitoring: Capturing sensor data for machinery health analysis (e.g., vibration, temperature).
• Industrial Automation: Integration with PLCs and DCS systems for real-time process optimization.

5. Installation and Configuration

• Wiring
  • Connect field devices using shielded twisted-pair cables to minimize interference. Termination options include screw terminals or quick-connect blocks.
  • For HART communication, a single pair of wires carries both the analog signal and digital data.
• Software Setup
  • Configure channels via Triconex TriStation™ software to define signal type, range, filtering, and HART parameters (e.g., device address, polling rate).
  • Enable TMR voting logic in the controller to process data from all three module channels.
    

    Triconex 3805H

6. Maintenance and Compliance

• Diagnostics and Monitoring
  • Use TriStation™ to monitor channel status, detect faults (e.g., out-of-range signals, wiring issues), and perform periodic calibration checks.
• Firmware Updates
  • Regularly update firmware to ensure compatibility with new devices and system enhancements.
• Standards Compliance
  • SIL 3 certification (IEC 61508/61511) for use in safety-critical applications.
  • RoHS and REACH compliant for environmental sustainability.

7. Compatibility

• Controllers: Works with Triconex Tricon EX, Tricon TSA, and legacy Tricon systems (verify backplane compatibility).
• Field Devices: Supports HART®-enabled transmitters (e.g., Rosemount, Yokogawa) and standard analog sensors.

8. Related Models and Alternatives

• 3805E: Non-HART analog input module (otherwise similar specifications).
• 3815H: High-speed analog input module for fast-changing signals (e.g., turbine speed).

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