TRICONEX 3720 Analog Input Module

TRICONEX  3720  Analog input module

The TRICONEX 3720 analog input module is a key component of the Triconex Safety Instrumented System (SIS), primarily used for collecting analog signals in industrial processes and converting them into digital signals for system processing. The detailed introduction is as follows:

Features

• High Reliability: Adopts a Triple Redundancy Architecture (TMR) with self-diagnosis function. Single-channel failure does not affect system operation. Certified by SIL 3, it ensures system safety and reliability.

• High-Precision Acquisition: Features high measurement accuracy, reaching below 0.15% of FSR (0°C to 60°C), enabling accurate collection of analog signals.

• Multi-Channel Design: Supports multiple analog input channels, providing 32-point analog input to collect multiple signals simultaneously.

• Good Signal Compatibility: Supports various analog signal types, such as 0-5V, -5 to +5V voltage signals, etc. The signal resolution is 12-bit or 14-bit programmable to meet different precision requirements.

• Strong Anti-Interference Capability: Each channel is independently isolated to effectively prevent signal interference. Input over-range protection reaches 150VDC/115VAC continuous, and common-mode rejection is -85 decibels (DC–100 Hz).

• Convenient Maintenance: Modular design supports hot-swapping, facilitating installation and maintenance while reducing downtime.

• Rich Communication Functions: Supports multiple communication protocols such as Ethernet, RS-485, and Modbus, with powerful data processing and transmission capabilities.

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Technical Parameters

• Input Points: 32 differential inputs.

• Input Update Rate: 10 milliseconds.

• Power-Off Resistance: 140kΩ (DC).

• Isolation Between Branches: 420kΩ.

• Operating Temperature: Generally -20°C to +60°C (slightly different for different models).

• Input Voltage: Typically 24VDC.

Main Application Fields

• Oil and Gas Sector: Used in the production, processing, and transportation of oil and gas. It monitors and controls parameters of rotating machinery such as pumps and compressors (e.g., vibration, bearing temperature, overspeed) and key process parameters like pipeline pressure and flow to ensure safe and stable production.

• Chemical Industry: Suitable for chemical production processes, monitoring the temperature and pressure of reactors, as well as operating parameters of equipment such as pumps and compressors. It also applies to safety interlock systems of chemical plants to ensure production safety and product quality.

• Power Sector: Applied in power plants and substations for condition monitoring of rotating machinery like steam turbines, generators, and hydroturbines. It also monitors parameters such as generator winding temperature and cooling water flow, participating in control systems for power production, transmission, and distribution to ensure the safe and stable operation of the power system.

• Paper Industry: In the papermaking process, it monitors and controls parameters of rotating machinery such as pulp pumps, presses, and dryers, helping optimize papermaking processes and improve paper quality and production efficiency.

• Metallurgical Industry: Used in metallurgical production to monitor equipment such as rolling mills, blowers, and converters, collecting analog signals like temperature and pressure to achieve precise control and safety protection of metallurgical processes.

• Other Fields: Also applicable to railway signaling systems, nuclear reactor control systems, etc. In industrial automation, it is used for factory equipment monitoring and production process automation; in safety monitoring, for industrial process safety monitoring and emergency shutdown; in energy management, for energy management and optimization, etc. Additionally, in the pharmaceutical and food industries, it monitors and controls process parameters on production lines to ensure product quality and production safety.