AI3351 / 3351 Brand: Triconex Schneider Affiliated System: Trident Safety System (SIS/ESD) Module Type: Analog Input Module AI Safety Level: SIL3, TMR Triple Modular Redundancy ## 1. Core Parameters ### Channel Specifications Number of Channels: 32 analog inputs Signal Type: Standard 4～20mA current signal Optional Range: 0～20mA ### Accuracy & Performance Resolution: 15bit Measurement Accuracy: ≤ ±0.05% Full Scale Input Impedance: Approximately 250 Ω Full Channel Cycle Refresh: 50ms ### Isolation & Diagnosis Electrical isolation between field side and system side Comprehensive self-diagnosis: open circuit, short circuit, over-range and sensor fault alarm TMR 2oo3 (Two-out-of-Three) redundant voting, non-stop operation with single-point fault ### Environmental & Electrical Parameters Operating Voltage: 24VDC Operating Temperature: -40℃ ～ +70℃ Support hot swapping and on-site replacement Insulation Withstand Voltage: 1500V AC ## 2. Application Collect 4-20mA analog signals from field transmitters such as pressure, temperature, flow, liquid level and valve position. Applied to SIS/ESD/F&G safety interlock monitoring in chemical, power and oil & gas facilities.