Triconex PI3381 High-Speed Pulse Input Module

Description

Basic Product Specifications

• Manufacturer: Triconex (Schneider Electric Industrial Automation)
• Product Series: Trident TMR Safety Instrumented System
• Product Type: High-Speed Pulse Input Acquisition Module
• Compatible Baseplate: Triconex 2381 Pulse Input Baseplate
• System Architecture: Full TMR Triple Modular Redundancy 2oo3 Voting Architecture
• Installation Mode: Standard chassis slot plug-in, hot-swappable online installation
• Origin: USA

Electrical Technical Specifications

• Nominal Field Input Voltage Range: 5 VDC ~ 125 VDC Wide Voltage Input
• Typical Input Impedance: 5 kΩ
• Typical Input Current per Channel: 5 mA
• Maximum Input Current per Channel: 20 mA
• Maximum Supportable Pulse Frequency: 100 kHz
• Minimum Detectable Pulse Width: 10 μs
• Total Channel Response Time: ≤10 ms
• Optical Isolation Voltage (Field Side to Logic Side): 1500 VDC
• Channel-to-Channel Complete Independent Isolation
• Built-in Surge Protection Voltage: 1500 V
• Built-in pulse signal filtering, anti-jitter, open-circuit and short-circuit detection circuits
• Internal Logic Power Supply: 5 VDC System Backplane Power
• Module Total Power Consumption: ＜2.8 W

Environmental Specifications

• Operating Ambient Temperature: -40 °C ~ +70 °C
• Storage Temperature: -40 °C ~ +85 °C
• Operating Relative Humidity: 5% ~ 95% Non-Condensing
• Anti-Vibration Performance: Compliant with IEC 60068-2-6 Industrial Standard
• Anti-Shock Performance: Compliant with IEC 60068-2-27 Industrial Standard
• Safety Certification: IEC 61508 SIL 2 Safety Certification, CE Certified, UL Certified
• Protection Grade: IP20 (Indoor Control Cabinet Installation)

Mechanical Specifications

• Structure: Standard Trident series compact plug-in module form factor
• Shell Material: Industrial anti-corrosion flame-retardant metal composite shell
• Mounting: Standard chassis slot plug-and-play hot-swappable installation
• Net Weight: 0.52 kg

Functional Characteristics

1. Wide Voltage High-Speed Pulse Acquisition

   Supports 5VDC to 125VDC wide voltage pulse input, maximum 100kHz pulse frequency detection, realizes high-precision pulse counting, frequency measurement and real-time speed calculation.
2. Full TMR Fault-Tolerant Safety Architecture

   Three independent pulse acquisition channels execute synchronous sampling and 2oo3 majority voting logic. Single channel fault completes automatic isolation without system shutdown, eliminates single-point failure risk and maintains continuous safe operation.
3. Complete Optical Isolation & Multi-Protection

   Equipped with 1500VDC optical isolation and 1500V surge protection; completely isolates field high-voltage pulse signals and electromagnetic interference from internal safety control system, prevents equipment damage caused by field fault voltage and current.
4. Professional Pulse Signal Processing Circuit

   Built-in pulse filtering, anti-jitter and signal shaping circuits, effectively suppresses field pulse noise and burrs, ensures accurate identification of high-speed pulse signals.
5. Comprehensive Real-Time Channel Diagnosis

   Integrates full-channel open-circuit detection, short-circuit detection, signal loss detection and module self-diagnosis functions. Fault status displays on front-panel LEDs and uploads to Trident controller in real time for alarm and safety interlock actions.
6. Perfect Matching with 2381 Baseplate

   Official dedicated matching design with Triconex 2381 pulse input baseplate, fully retains signal transmission performance, diagnostic functions and safety architecture.
7. Hot-Swappable Maintenance Design

   Supports online module replacement without powering down the entire safety system, greatly reduces system downtime and maintenance difficulty.
8. Intuitive Status Visual Indication

   Front panel integrated MODULE OK, FAULT, ACTIVE LED indicators and individual channel pulse active indicators, realizes intuitive on-site pulse signal monitoring and rapid fault troubleshooting.

Application Scenarios

1. Oil & Gas Industry

   Wellhead pipeline flowmeter pulse signal acquisition, wellhead speed sensor pulse monitoring, gas compressor rotating speed pulse detection, oil-gas gathering station flow parameter safety monitoring pulse input collection.
2. Petrochemical & Refining Industry

   Process pipeline flow pulse signal monitoring, furnace fuel flowmeter pulse acquisition, burner management system (BMS) speed pulse feedback detection, distillation column flow safety monitoring pulse input.
3. Power Generation Industry

   Steam turbine rotating speed pulse detection, boiler feedwater flowmeter pulse signal acquisition, generator auxiliary equipment speed monitoring pulse input, cooling water flow safety monitoring pulse collection.
4. Chemical Processing & Metallurgy Industry

   Production line conveyor speed encoder pulse monitoring, smelting furnace feed flowmeter pulse acquisition, pressure relief valve position pulse feedback detection, hazardous material transportation flow safety monitoring pulse input.
5. General Industrial Safety Control

   All SIL 2 safety-level high-speed pulse signal monitoring occasions, including turbine speed detection, flowmeter pulse output, encoder position/speed pulse signal acquisition for critical safety control systems.