TRICONEX 3700A Analog Input Module

TRICONEX 3700A analog input module

Basic parameters:

Working voltage: 24VDC.

Input channels: Up to 32 differential input channels, DC coupling.

Output channels: Up to 16 channels.

Input update rate: 55ms.

Resolution: 12 bits.

Accuracy: Within the range of 0°C to 60°C, less than 0.15% of the full scale (FSR).

Input resistance (load) : Minimum 30MΩ (DC).

Power-off resistor: The typical value is 30kΩ (DC).

Functional features:

Three Modular Redundancy (TMR) architecture: It adopts three modular redundancy technology. There are three independent channels inside the module to process and vote on the input signal in parallel. This design can significantly reduce the risk of system failure caused by a single point of failure, enhance the reliability and safety of the system, meet the SIL3 safety level requirements, and is suitable for industrial scenarios where safety is of critical importance.

High-precision measurement: With a 12-bit resolution, within the range of 0°C to 60°C, the measurement accuracy is less than 0.15% of the full scale (FSR). It can precisely convert analog signals into digital signals, providing accurate data for the control system and meeting the requirements of most industrial processes for analog measurement accuracy.

Multi-channel input: Equipped with 32 differential input channels, it can simultaneously collect multiple analog signals, meeting the measurement requirements of multiple parameters in complex industrial systems. This reduces the number of modules used, lowers system costs and wiring complexity.

Wide-range analog input: It can accept various types of analog input signals, such as 4-20mA current signals, 0-10V voltage signals, etc. It can adapt to the output signals of different types of sensors, has high flexibility, and is convenient to connect with various field instruments.

High anti-interference capability: The typical value of the common-mode rejection ratio is -80dB (DC - 100Hz), the common-mode range has a peak of -12V to + 12V, and the typical value of the inter-channel isolation resistance is 200kΩ. It can effectively suppress common-mode interference and inter-channel interference, and can work stably and reliably in industrial sites with complex electromagnetic environments.

Fault diagnosis function: The module is equipped with a powerful self-diagnosis function, with a diagnosis coverage rate as high as 99%. It can monitor its own working status in real time. When a fault is detected, it can promptly issue an alarm signal, facilitating maintenance personnel to quickly locate and eliminate the fault, and reducing system downtime.

Fast input update rate: With an input update rate of 55ms, it can quickly respond to changes in input signals and promptly transmit the latest measurement data to the control system, enabling the system to make rapid decisions and adjustments. It is suitable for industrial process control with high real-time requirements.

Application scenarios:

Condition monitoring of power generation equipment

In thermal power plants, the vibration signals of steam turbines (output voltage signals from acceleration sensors) and the stator temperature of generators (signals from PT100 thermal resistors) are collected to monitor the operating status of equipment in real time and prevent equipment failures.

The high-voltage busbar voltage and transformer winding current of the substation are measured to provide data for the relay protection system and ensure the stable operation of the power system.

New energy control scenarios

In photovoltaic power stations, the output voltage, current and temperature of solar panels are monitored to optimize the working efficiency of inverters. In the wind farm, parameters such as wind speed (4-20mA signal from the anemometer) and the torque of the main shaft of the wind turbine are collected to achieve variable pitch control and power regulation of the wind turbine.

Production line process control

In steel smelting, the temperature of the blast furnace (thermocouple signal), the pressure at the top of the furnace, as well as the billet pulling speed and cooling water flow rate of the continuous casting machine are measured to ensure the technological accuracy of the steel smelting and casting processes.

In the painting workshop of automobile manufacturing, the paint pressure and the signal (voltage signal) of the joint position sensor of the painting robot are monitored to ensure the uniformity of the painting and the accuracy of the equipment's operation.

Equipment health management

By collecting the vibration, temperature and current signals of key equipment such as compressors and pumps, and combining with fault diagnosis algorithms, predictive maintenance of the equipment is achieved, reducing downtime.

Water treatment system

In the sewage treatment plant, the dissolved oxygen concentration (4-20mA signal) in the aeration tank and the pH value of the sewage are monitored, and the operation of the aeration blower and dosing device is controlled to ensure that the sewage treatment meets the standards.

In the water supply system of waterworks, the pressure and flow of the pipeline network are measured to achieve constant pressure water supply control and ensure the stability of urban water use.

Environmental protection monitoring scenarios

Collect the flue gas temperature and dust concentration (sensor output current signal) of the waste gas treatment equipment, and transmit the data in real time to the environmental protection monitoring system to ensure that the emission indicators meet the national standards.