Megmeet drive common fault repair methods

1. Sinusoidal pulse width modulation Sinusoidal Pulse Width Modulation (SPWM) is characterized by simple structure of control circuit, low cost, good hardness of mechanical characteristics, and can meet the smooth speed regulation requirements of general transmission, and has been widely used in various fields of the industry. However, this control ...

1. Realize remote control of industrial field equipment; 2. The PLC industrial gateway realizes remote upgrade of equipment firmware, downloads the program, and can flexibly access various equipment management platforms; 3. Realize remote control of industrial site touch screen and remote mapping of configuration screens; 4. PLC industry ...

The basic principle of a high-voltage inverter There are two categories of frequency conversion process of frequency converter: AC-AC form and AC-DC-AC form. Now it is mostly in the form of AC-DC-AC, and the following is a brief introduction to the working principle of this form. Three-phase high-voltage electricity enters the high...

Inverter energy saving The energy saving of the inverter is mainly manifested in the application of fans and pumps. In order to ensure the reliability of production, all kinds of production machinery are designed with power drive, and there is a certain amount of surplus. When the motor cannot operate at full load, in addition to meeting the power drive requirements, ...

1. The electrical control cabinet installed with PLC should have a clean and dry environment. Moisture-absorbing dry materials should be placed inside, and the splashing of coolant and oil mist should be prevented. 2. Regardless of the system working or shutdown, the electrical cabinet door should always be closed, and the electrical components should be kept in a good state.

1. The voltage is unstable In the process of using the inverter air compressor, sometimes the voltage is unstable. If the voltage is unstable, a load may occur, causing the compressor to not start properly. Solution: The regulator can be adjusted in time. 2. The main ...

First, the process requirements When the low-pressure pressure collected by the system is greater than the upper low-pressure pressure set by the touch screen, the compression time will be loaded according to the set loading time, and the lower pressure will be reduced according to the set load reduction time. The high pressure collected is greater than that on the high pressure ...

1. After connecting the wires according to the wiring diagram, start the power supply and prepare to set the parameters of the inverter. 2. Press the "MODE" button to enter the parameter setting mode, and set the Pr.79 to "2": external operation mode, the start signal is input by the external terminal (STF, STR), and the speed adjustment is carried out by the external terminal.

External electromagnetic interference can easily cause malfunctions If there are interference sources around the inverter, they will invade the inside of the inverter through radiation or power lines, causing the control loop to malfunction, causing abnormal operation or shutdown, and even damage to the inverter in severe cases. Noise suppression on the outside ...

On September 24, the 2021 Zhongguancun Forum, co-sponsored by the Ministry of Science and Technology of China, the Chinese Academy of Sciences, the China Association for Science and Technology, and the Beijing Municipal People's Government, officially opened in Beijing. As one of the main agendas of the forum, the Zhongguancun International Technology Exchange Conference closely follows the "smart· healthy· carbon neutrality...

(1) Spot welding: The weldment is pressed between the two cylindrical electrodes, heated by electricity, so that the weldment melts at the contact to form a nugget, and then the power is cut off, and it solidifies and crystallizes under pressure to form a dense solder joint. Spot welding is suitable for welding thin plates (laps) and steel bars below 4 mm.

1. Metallurgical industry - the application of high-voltage inverter in the metallurgical profession mainly includes plate and wire rod rolling mills, coilers, fans, slurry pumps, etc., with the primary intention of motor energy saving. 2. Electric power industry - China's power generation capacity ranks second in the world, second only to United States. The power profession is also changing.

1. Correctness (low debugging cost) First of all, the PLC program must be able to work correctly to meet the requirements of the actual control process. This is the essence of the PLC program, and if you don't do that, nothing else makes sense. 2. Reliability (low maintenance cost) Not only to ...

Sinusoidal Pulse Width Modulation (SPWM) control mode It is characterized by simple structure of control circuit, low cost, good hardness of mechanical characteristics, and can meet the smooth speed regulation requirements of general transmission, and has been widely used in various fields of industry. However, this type of control is at low frequencies, ...

Inverter control cabinet (inverter electrical control cabinet / electric control cabinet / electric control box) is an electrical control cabinet developed by using inverters from Siemens, ABB, Schneider, Fujifilm, Mitsubishi, Panasonic, Delta, Shilin, Inovance and other manufacturers. According to the needs of working conditions, AC transmission can be installed in the frequency conversion cabinet.

1. Intelligent network The intelligent inverter does not need to set a lot of parameters when it is used, and it has the function of fault self-diagnosis, which has high stability, high reliability and practicability. The Internet can be used to realize the linkage of multiple inverters, and even the inverter complex in the factory.

When the inverter is installed and wired; Note: When more than two inverters are installed in the same cabinet, please pay attention to the installation position and spacing to ensure the heat dissipation effect. Dangerous: 1. It should be operated by professional electrical engineering personnel, otherwise there is a risk of electric shock. 2. Please make sure before wiring...

1) Shut down, so that the inverter out of the operating state; 2) Cut off the high-voltage power supply and push out the high-voltage cabinet trolley (when there is a bypass cabinet. The inverter can be isolated by the disconnecting switch of the bypass cabinet), the local or remote high-voltage disconnect switch can be locked, and the high-voltage cabinet grounding switch can be grounded; 3) Hit ...

1. The meaning of the representation is different: PLC is the abbreviation of planar optical waveguide (technology), the so-called planar optical waveguide, means that the optical waveguide is located in a plane. A servo control system is a feedback control system used to accurately follow or reproduce a certain process.

From April 13 to 16, 2021, CHINAPLAS 2021 was grandly held at the Shenzhen World Convention and Exhibition Center (Bao'an New Hall) with the theme of "New Era· New Power, · Sustainable Innovation". As a vane of rubber and plastics professions and a barometer of shopping malls, the World Rubber and Plastics Exhibition has a 350,000 square meter ...