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Key Role and Application of Frequency Converters in Automated Sorting Systems

2026-04-06 04:16:40 · · #1

Automated sorting machines are a key component of automated sorting systems. They require mechanical transport lines ranging from 40-50 meters to 150-200 meters in length, along with supporting mechatronics control systems, computer networks, and communication systems. This system not only occupies a large area but also necessitates the construction of a 3-4 story automated warehouse and various automated handling equipment (such as forklifts) to match it. The automated sorting system operates as follows: The logistics center receives thousands of different types of goods daily from hundreds or thousands of suppliers or owners via various transportation methods. These goods are unloaded and quickly and accurately sorted according to product type, owner, storage location, or destination, before being transported to designated locations (such as designated shelves, processing areas, or shipping platforms). Meanwhile, when a supplier or cargo owner notifies the logistics center to ship goods according to delivery instructions, the automated sorting system accurately locates the goods to be shipped from the massive high-rise warehouse storage system in the shortest possible time, and ships out the goods in the required quantity. Different quantities of goods taken from different storage locations are transported to different sorting areas or distribution stations according to different delivery locations for loading and delivery.

Equipment Introduction

An automated sorting system generally consists of a control unit, a sorting unit, a conveyor system, and sorting lanes. The control unit identifies, receives, and processes sorting signals, instructing the sorting unit to automatically classify goods according to product type, delivery location, or owner category. These sorting requirements can be input into the sorting control system through various methods, such as barcode scanning, color code scanning, keyboard input, weight detection, voice recognition, height detection, and shape recognition. The system then determines which sorting lane a particular product should enter based on these signals. The sorting unit, acting on the sorting instructions from the control unit, activates when products with the same sorting signal pass by, changing their direction of travel on the conveyor system to enter another conveyor or the sorting lane. There are many types of sorting units, generally including push-out, floating, tilting, and branching types. Different units have slightly different requirements regarding packaging materials, weight, and the smoothness of the packaging surface.

The main component of the conveying device is the conveyor belt or conveyor machine. Its main function is to allow goods to be sorted to pass through the control device and the sorting device. Several sorting lanes are generally connected to both sides of the conveying device, allowing the sorted goods to slide off the main conveyor (or main conveyor belt) for subsequent operations. The chute, typically composed of steel belts, belts, rollers, etc., allows the goods to slide from the main conveying device to the collection platform. There, workers collect all the goods at that lane and either store them in a warehouse or assemble them for loading and distribution. These four parts of the device are connected through a computer network, combined with manual control and corresponding manual processing, to form a complete automated sorting system.

The EN620 series distributed frequency converters are suitable for conveyor systems, driving the nearest motor to power the conveyor belt, achieving stepless speed regulation, and meeting the requirements for rapid start-stop and long-term high-speed and stable operation of the conveyor belt. Multiple EN620 frequency converters can be networked with a host computer and controlled via buses such as EatherCAT, Profinet, and CANopen to achieve fast and accurate material transfer, meeting the requirements for multi-section synchronous transmission and rapid sorting, thereby improving sorting efficiency.

Electrical schematic diagram

Application advantages

The EN620 series all use aviation plugs, which can achieve quick connection and are very convenient for installation and debugging.

It supports both synchronous and asynchronous motors, making it convenient for customers to prepare inventory.

Unique features in material handling applications include an optional emergency stop button and low-speed selection via an external sensor.

It offers a variety of communication modes to choose from and supports communication functions such as Modbus, ProfiNet, EtherCAT, and Canopen.

Heat dissipation method: self-cooling, with stronger adaptability to external environment, protection level: IP 40.


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