Control requirements: Basic low-voltage components can be used Ventilation fan motor suppliers https://www.chinakxdq.com/product/ventilation-fan-motor/ to perform forward rotation control of three-phase AC asynchronous motors. 2. Electrical schematic diagram of relay operation The electrical schematic diagram of relay-controlled three-phase AC asynchronous motor forward rotation relay button interlock operation is shown in Figure 1.1. 3. Electrical schematic diagram of relay operation The electrical schematic diagram of relay-controlled three-phase AC asynchronous motor forward rotation relay interlock operation is shown in Figure 1.2. First, make the schematic diagram Relay interlock as shown in Figure 1.3 Button interlock as shown in Figure 1.4 2. Input / output point allocation Input / output point allocation is shown in Table 1.5. III. Installation 1. The process is as follows: 1. Under the guidance, analyze the schematic diagram of the electrical control circuit. 2. Check the quality of each component with a multimeter. 3. Read the layout of electrical components, and install and fix electrical components accordingly. 4. Read the wiring diagram of the electrical installation and follow the wiring accordingly. (1)

The main circuit wiring should pay attention to the discrimination and selection of the main and auxiliary contacts of the contactor and the connection of the thermal relay; (2) When controlling the wiring of the circuit, pay attention to the resolution, selection and wiring of the normally open and normally closed contacts of the button. 5. Power on to check and clear the circuit fault. Three-phase AC motor jog control wiring. 未 When the power is off, use a multimeter resistance file to start to check whether the control circuit is correct. Turn on the power and operate the related buttons to verify the circuit’s operation. 2. Installation tools Tools: multimeter, needle-nose pliers, partial pliers, screwdriver, wire stripper, test pencil, etc. Device: one test mounting plate, several low-voltage electrical components, and several wires. 3. Make the component layout diagram After checking the components, install the electrical components on the control panel according to the prepared component layout diagram.

The electrical installation should be sturdy, meet the process requirements, and connect according to the wiring diagram. 4. Hardware debugging Use a multimeter to check the circuit. There must be no short circuit between the positive and negative poles of the power supply. Require power-on debugging only after checking for errors.

Micromotors are motors with a diameter of less than 160mm or a rated power of less than 750mW. There are many types of micro motors, which can be roughly divided into DC motors, AC motors, auto-angle motors, stepper motors, resolvers, shaft angle encoders, AC and DC motors, speed generators, induction synchronizers, linear motors, and voltage 13 categories including electric motors, motor units, and other special motors. As the consumption of modernization increases year by year, people’s consumption of household motors and automobiles is increasing. However, as a source of power for these products, the market demand for micromotors is also expanding. In recent years, the popular car brand Tesla Tesla uses three-phase AC induction motors.

According to the data, as of now, the micromotors consumed in China have accounted for more than 60% of the global micromotor share. From the perspective of the overall data share, China ’s micro-motor consumption market has a higher market share. However, from the average data point of view, the average family ownership of micro-motors in developed countries is between 80 and 130, while in China it is only between 30 and 60. It is not difficult to find that there is still a lot of upside. Nowadays, the telecommunications, micro video games, consumer electronics and medical equipment industries are developing rapidly, and micro motors are widely used. The micro-motor market is experiencing a strong long-term demand situation. However, the production process of micro-motors is relatively complicated and requires high accuracy and power consumption, so there is still a lot of room for innovation and growth. China is not only the largest consumer of micromotors but also the largest micromotor manufacturing base in the world. China’s private enterprises are basically based on low-end micro-motor products. The products produced by the sole proprietorship are mid-range products, but after years of development, private enterprises have strong market competitiveness in terms of industrial support and comprehensive production capacity. If compared with the technical level, there is still a certain gap between China and the traditional motor powerhouse. The development of domestic micro-motors has the problem of uneven industrial development. From the perspective of the distribution of micro-motor enterprises, the development of enterprises in China’s coastal areas is particularly rapid. The Pearl River Delta region mainly produces various types of micromotors in the information network, home appliance and industrial fields.

Most of the products are brushed DC motors, brushless DC motors, single-phase asynchronous motors, etc. The total product volume accounts for 10% of the global year-on-year products. However, the Yangtze River Delta region is the region with the most concentrated production of micro-motors and supporting components, and the industrialization supporting capacity has gradually matured. Although the development of the micro-motor industry in the coastal areas has made great progress, domestic motors are still mainly low-end, and there is a certain distance from foreign products in the high-end. This has something to do with the domestic technology level not reaching the international leading level. The control chip and drive technology are the soul of the motor. At present, the total demand for domestic motor control chips has accounted for more than 40% of the world, but about 80% of them are dependent on imports. The localization ratio of motor control chips is still very low. As the foundation High-end waterproof motor factory of the micro motor industry, motor control chips have always been based on high capital and high technology. These two high characteristics determine that companies that can finally have a say in the field of control chips must have considerable strength. In particular, the high reliability of the motor system requires the participation of the three parties, namely the motor, the control chip and the system design. This is difficult for domestic motor control chip manufacturers, which have started relatively late, in terms of technical strength and popularity, to compete with foreign rivals. At present, the main technology of motor control chips is still abroad, so the development of domestic micro-motors is still restricted by foreign countries, especially by the foreign semiconductor https://www.chinakxdq.com/product/high-end-waterproof-motor/ industry, which is an unfavorable factor for the development of the motor industry. There are not many domestic enterprises that can participate in the industry competition. Even if they can participate in the competition, it is difficult to support the rapid development of motors. Therefore, the domestic motor chip industry urgently needs to break the monopoly position of foreign manufacturers through technological innovation.