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Home > Electrical & Electronics > Electrical Control System > TRICONEX HCU3700 Programmable Logic Controller

TRICONEX HCU3700 Programmable Logic Controller

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Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

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Guizhou Yuanmiao Automation Equipment Co., Ltd.

1Yr

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China

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TRICONEX HCU3700 Programmable Logic Controller

The TRICONEX HCU3700 module is part of the TRICONEX Tricon series SIS (Safety Instrumented System) and belongs to the category of Programmable Logic Controllers (PLC). The relevant introduction is as follows:

Product Parameters:

Input Voltage: AC 100-240V or DC 24V.
Output Voltage: DC 24V.
Input Current: ≤1A.
Output Current: ≤5A.
Operating Temperature Range: -10℃~55℃.
Storage Temperature Range: -40℃~+85℃.
Analog Inputs: 2.
Analog Outputs: 2.
Dimensions: 90mm x 180mm x 55mm.
Weight: Approximately 1.5kg.

Functional Features:

High-performance Processing: Equipped with an ARM Cortex-A7 processor, it boasts excellent computing power and data processing speed, enabling rapid handling of various signals and instructions.
Multiple Communication Protocols: Supports various communication protocols such as Modbus, RTU/TCP, and CANopen, facilitating data transmission and communication with other devices or systems, and adapting to different industrial automation and control system requirements.
High Reliability: Undergoes rigorous testing to ensure stable operation in critical control and safety applications, making it suitable for occasions with extremely high reliability requirements.
Modular Design: Easy to expand, allowing flexible addition or reduction of modules according to actual application needs, and applicable to various safety application scenarios.
Redundant Structure: Features a triple modular redundancy structure, where three identical sub-circuits independently execute control programs, and process inputs and outputs through a 2-out-of-3 voting method, enhancing the system's fault tolerance and reliability.

Application Fields:

Nuclear Power Plants: Can be used in safety-critical control systems such as reactor protection, emergency shutdown, and plant monitoring to ensure the safety and stability of nuclear power plant operations.
Chemical Processing Facilities: Used to monitor and control chemical reaction processes, real-time monitoring of process parameters, and timely take measures in case of abnormalities to prevent accidents.
Petrochemical Industry: Capable of monitoring and controlling petrochemical production processes, such as monitoring pipeline pressure, flow, and other parameters, to ensure the safety and stability of the production process.
Other Industries: Also applicable to machinery manufacturing, metallurgy, electric power, transportation, mining, and other industries, used for technical transformation of old equipment or development of new products, realizing functions such as industrial real-time sequence control, conditional control, and counting control.

Working Principle

Input Sampling Phase: The HCU3700 sequentially reads all input states and data in a scanning manner and stores them in the corresponding units of the I/O image area. After the input sampling is completed, it proceeds to the user program execution and output refreshing phases. During this period, even if the input states and data change, the states and data in the corresponding units of the I/O image area remain unchanged.
User Program Execution Phase: The controller scans the user program sequentially from top to bottom. When scanning each program, it first scans the control circuit composed of various contacts on the left, performs logical operations on the control circuit in the order of left to right and top to bottom, and then, based on the results of the logical operations, refreshes the state of the corresponding bit of the logical coil in the system RAM storage area, or refreshes the state of the corresponding bit of the output coil in the I/O image area, or determines whether to execute the special function instructions specified by the program.
Output Refreshing Phase: After the scanning of the user program is completed, the HCU3700 enters the output refreshing phase. At this time, the CPU refreshes all output latch circuits according to the corresponding states and data in the I/O image area, and then drives the corresponding peripherals through the output circuit, which is the real output of the controller.

In addition, the TRICONEX HCU3700 adopts a triple modular redundancy (TMR) structure, where three identical sub-circuits independently execute control programs. Input signals are processed through three independent paths, and a 2-out-of-3 voting mechanism is used for output, that is, at least two of the three output results must be the same to be recognized as valid output. This improves the system's reliability and fault tolerance, ensuring that the system can still operate normally in case of a single point of failure.

Product Tags: HCU3700 , 3703E