TRICONEX 3703E Analog Input Module

Product Description

TRICONEX 3703E is a 16-channel isolated differential analog input (AI) module for Tricon TMR triple modular redundant safety systems. It accepts 0~5V DC and 0~10V DC signals, and can handle 4~20mA transmitters with external shunt resistors. It provides galvanic isolation between channels for superior common-mode noise rejection. The module uses three independent sensing legs and mid-value voting logic. Built-in diagnostics detect open circuits, over-range and leg faults. Hot-swap is supported with dedicated isolated termination panels. It meets SIL3 requirements and is widely used for high-precision analog signal acquisition in SIS, ESD and ITCC applications.

Specifications

• Model: 3703E
• Brand: TRICONEX (Schneider Electric)
• Type: Isolated Differential Analog Input Module
• Channels: 16, differential isolated
• Input Ranges: 0~5V DC, 0~10V DC; 4~20mA with external shunt resistor
• Over-range: +6%
• Resolution: 12 bit
• Accuracy: <0.15%FS (0℃~60℃)
• Input Impedance: ≥30MΩ
• CMRR: ≥90dB @60Hz
• Common Mode Voltage: 200V peak
• Update Rate: 50ms
• Isolation: Galvanic channel isolation, independent legs
• Diagnostics: Open circuit, over-range, leg fault detection
• Architecture: TMR triple modular redundancy, 2oo3 mid-value voting
• Mounting: Rack slot mounting for Tricon chassis
• Hot-swap: Supported
• Operating Temperature: 0℃ ~ +60℃
• Storage Temperature: -40℃ ~ +85℃
• Protection Class: IP20 (cabinet installation)
• Certifications: TÜV SIL3, CE, UL
• Matching Termination: 9760 series isolated termination panels

Application

1. Signal acquisition for pressure, level and temperature transmitters in petrochemical & refinery SIS/ESD
2. Process variable monitoring for gas turbine and steam turbine ITCC turbomachinery control
3. Safety interlock and F&G signal collection for LNG plants and offshore platforms
4. BMS burner management systems for boilers and combined-cycle power plants
5. Safety monitoring loops for reactors in coal chemical and fine chemical plants
6. Safety instrument systems for natural gas pipelines and gas storage facilities

Series AI Models

3700A, 3701, 3703E, 3704E, 3720, 3721