TRICONEX 3700A high-performance analog input module

The TRICONEX 3700A is a high-performance analog input module and an integral part of the Triconex Safety Instrumented System (SIS). Below is its comprehensive detailed information:

1. Technical Parameters

Input Voltage Range: 0–5V, ±6%
Number of Input Points: 32 points
Input Coupling Mode: Differential, DC-coupled
Input Update Rate: 55 milliseconds
Resolution: 12-bit
Accuracy: <0.15% FSR (within the range of 0°C to 60°C)
Input Resistance: Minimum 30 MΩ (DC)
Off-State Resistance: Typically 30 kΩ (DC)
Common Mode Rejection Ratio (CMRR): Typically -80 dB (DC to 100 Hz)
Common Mode Range: -12V to +12V peak
Channel-to-Channel Isolation: Typically 200 kΩ

2. Product Features

Triple Redundancy Architecture: Adopts an advanced Triple Modular Redundancy (TMR) architecture. Each input channel transmits the converted digital signal to three independent main processor modules simultaneously, ensuring the system operates normally even if a single module fails—greatly enhancing system reliability and safety.
High-Precision Acquisition: Each channel is equipped with an independent 12-bit A/D converter, which can convert analog signals into digital signals with high precision. It can accurately collect signals output by devices such as temperature sensors, pressure transmitters, and flow sensors.
Strong Anti-Interference Ability: Supports 32 differential DC-coupled input points and features excellent anti-interference performance, with a common mode rejection ratio (CMRR) of up to -80 dB.

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