Triconex 3720 Analog Input Module

Triconex 3720 Product Introduction and Technical Specifications
Brand: Triconex (Schneider Electric)
Model: 3720
Full Product Name: Triconex 3720 Analog Input Module
Series: Tricon Triple Modular Redundant (TMR) Safety Instrumented System Series
Country of Origin: United States
HS Code Reference: 85389091 (For customs reference only; confirm classification with local customs authority before declaration)
Overall dimension: 185 mm × 135 mm × 45 mm
Net weight: Approximately 1.36 kg

Electrical Specifications
Module auxiliary supply voltage: 24 V DC nominal, operating range 18 V DC to 30 V DC
Supported input signals: 0–5 V DC, -5 V ~ +5 V DC voltage signals; configurable for 4–20 mA / 0–20 mA current signals
Input impedance: ≥10 MΩ for voltage mode; 250 Ω for current mode
Channel quantity: 64 single-ended analog input channels
Resolution: 12-bit or 14-bit programmable
Measurement accuracy: ≤0.15% of full scale within 0 °C ~ +60 °C
Maximum power consumption: 7.2 W
Overvoltage protection threshold: ±30 V DC
Operating temperature range: -20 °C to +60 °C
Storage temperature range: -40 °C to +85 °C
Relative humidity: 5% to 95%, non-condensing
Main Characteristics
Triple Modular Redundant (TMR) 2-out-of-3 voting architecture to eliminate single-point hardware failure risk;
64 high-density single-ended analog input channels supporting software signal type switching;
Independent galvanic isolation for each channel to suppress cross-channel interference;
Built-in comprehensive channel diagnostics including open-circuit, short-circuit and signal over-range detection;
Multi-status LED indicators including PASS, FAULT, ACTIVE and FIELD channel status indication;
Supports hot-swap replacement without shutting down the whole SIS rack;
Compatible with Tricon main chassis, backplane and standard terminal blocks for field wiring;
Fully configured and diagnosed via official TriStation programming software;
Compliant with IEC 61508 safety standards, applicable for SIL2 / SIL3 safety loop construction;
Robust anti-electromagnetic interference design suitable for heavy industrial plant environments;
Standard rack-mounted structure for neat layout inside safety control cabinets;
Supports continuous long-term operation for critical safety monitoring and shutdown protection loops;
Perfectly matched with other Tricon 3700 series I/O modules to build complete TMR safety control systems.