Triconex AI3351S2

Description

Basic Product Specifications

• Manufacturer: Triconex (Schneider Electric Industrial Automation)
• Product Series: Trident Tri-GP TMR Safety Instrumented System
• Product Type: High-Density Analog Input Acquisition Module
• Input Channels: 32 Shared Analog Input Channels
• System Architecture: Full TMR Triple Modular Redundancy 2oo3 Voting Architecture
• Compatible Baseplate: Triconex 2351 Analog Input Baseplate
• Compatible System: Trident main chassis, expansion chassis
• Installation Mode: Standard slot plug-in, hot-swappable online installation
• Factory Calibration: Permanent factory calibration, no on-site manual calibration required

Electrical Technical Specifications

• Standard Input Signal: 4–20 mA DC Current Loop
• Full Operating Input Range: 2–22 mA DC
• Maximum Absolute Field Voltage: 33 VDC
• Maximum Absolute Input Current: 50 mA DC
• Input Source Impedance: 180 Ω
• A/D Conversion Resolution: 12 Bits
• Full-Scale Accuracy: ±0.15% FS
• Total Channel Scan Time: ＜1 ms
• Input Bandwidth (3dB): 16 Hz
• Functional-to-Protective-Earth Isolation Voltage: 500 VDC
• Functional-to-Functional Isolation Voltage: 800 VDC
• Built-in Surge Protection: 1500 V
• Internal Logic Power Supply: 5 VDC System Backplane Power
• Module Power Consumption: ＜4 W
• Communication Bus: Triplicated RS-485 I/O Bus, 2 Mbps, HDLC Protocol

Environmental Specifications

• Operating Ambient Temperature: -40 °C ~ +70 °C
• Storage Temperature: -40 °C ~ +85 °C
• Operating Relative Humidity: 5% ~ 95% Non-Condensing
• Anti-Vibration Standard: IEC 60068-2-6 Industrial Grade
• Anti-Shock Standard: IEC 60068-2-27 Industrial Grade
• Safety Certification: IEC 61508 SIL 3, CE Certified, UL Certified

Mechanical Specifications

• Module Dimensions: 119 mm × 188 mm × 36 mm
• Module Net Weight: 1.5 kg
• Shell Structure: Industrial anti-corrosion flame-retardant metal composite shell
• Terminal Configuration: External terminal assembly (ETA) anti-loosening wiring terminals
• Mounting: Hot-swappable plug-and-play slot installation

Functional Characteristics

1. Full TMR Fault-Tolerant Safety Architecture

   Three independent analog acquisition circuits perform synchronous sampling and mid-value voting logic. Single channel fault completes automatic isolation without system shutdown, eliminates single-point failure risk and maintains continuous safe operation.
2. 32-Channel High-Density Analog Acquisition

   Ultra-high channel integration reduces cabinet occupied space, supports centralized collection of massive field analog process parameters, matches large-scale complex industrial safety monitoring requirements.
3. 12-Bit High Precision & Ultra-Fast Response

   12-bit high-resolution A/D conversion, ±0.15% full-scale accuracy, total 32-channel scan time less than 1ms, realizes real-time and accurate analog signal monitoring.
4. High-Grade Electrical Isolation & Multi-Protection

   Equipped with 500VDC/800VDC double isolation, surge protection, overcurrent protection and reverse polarity protection; completely isolates field sensor circuits from internal TMR safety control system, prevents equipment damage caused by field fault voltage and current.
5. Comprehensive Full-Range Real-Time Diagnosis

   Integrates module self-test, channel open-circuit detection, short-circuit detection, out-of-range signal detection, drift accuracy fault detection; diagnostic completion time ＜500 ms, fault status displayed by front-panel LEDs and uploaded to controller in real time for alarm and safety interlock actions.
6. Hot-Spare & Hot-Swappable Maintenance Design

   Fully supports hot-spare automatic failover configuration; realizes online module replacement without powering down the entire safety system, minimizes system downtime and maintenance difficulty.
7. Intuitive Status Visual Indication

   Front panel integrated MODULE OK, FAULT, ACTIVE, FIELD POWER LED indicators, realizes intuitive on-site status monitoring and rapid fault troubleshooting.
8. Factory Permanent Calibration

   Built-in stable reference source, maintains calibration accuracy for whole service life, no regular on-site calibration required.

Application Scenarios

1. Oil & Gas Industry

   Wellhead pressure/liquid level/temperature analog signal monitoring, pipeline flow parameter acquisition, gas compressor safety monitoring, gathering station ESD emergency shutdown system analog input collection.
2. Petrochemical & Refining Industry

   Reactor temperature/pressure/flow closed-loop monitoring, furnace burner management system (BMS) analog signal acquisition, distillation column process parameter detection, flare system safety monitoring.
3. Fire & Gas Detection System (FGS)

   Gas detector analog concentration signal collection, flame detector analog intensity signal monitoring, hazardous gas leakage safety interlock analog input acquisition.
4. Power Generation Industry

   Boiler water level/pressure/temperature monitoring, steam turbine auxiliary process parameter collection, generator safety protection system analog signal acquisition.
5. Chemical Processing & Metallurgy Industry

   Smelting furnace process parameter analog monitoring, production line pressure/flow/liquid level detection, hazardous chemical material handling equipment safety analog signal collection.
6. General High-Hazard Process Industry

   All SIL 3 safety-level analog signal monitoring occasions, including standard 4–20mA transmitter signal acquisition for pressure, temperature, liquid level, flow, displacement sensors in critical safety control systems.