Sulfur dioxide (SO2) is a toxic and harmful gas with a pungent odor and hygroscopicity. It is an easily oxidized substance and can be oxidized by oxygen, nitric acid and other compounds into substances such as sulfuric acid (H2SO4) and sulfuric acid dioxide (SO3). SO2 is a colored gas at room temperature, with a higher…
With the continuous development of society and the gradual improvement of people’s living standards, the public ‘s demands for safety, health and environmental protection have become increasingly strong. Among many fields, the demand for accurate detection of low-concentration acetone gas is particularly prominent. At this point, the advantages of oxide semiconductors are obvious. Due to its characteristics such as high…
Burning two new motors in a row ! The output current and voltage of the inverter are balanced, and the input voltage is balanced. The current is unstable and fluctuates between 20% and 50%. The inverter burned out due to a short circuit between turns at 35Hz. The grid voltage is very stable, 720V. The…
Frequency converter , as the name suggests, is a device that can change the frequency. It is an AC power supply whose frequency and voltage can be adjusted to output . It is mainly used to regulate the speed of asynchronous motors . Before the advent of frequency converters, speed regulation of asynchronous motors was very troublesome because the speed and torque were not…
Nowadays, sensors have been integrated into many places of life, which can analyze users’ daily behaviors and increase the interaction between users and surrounding affairs, such as common motion sensors and temperature and humidity sensors. Through some commonly used intelligent sensors, the convenience and safety of life can be greatly improved. Among the popular smart…
Nowadays, sensors have been integrated into many places in life. They can analyze users’ daily behaviors and increase users’ interaction with surrounding matters, such as common motion sensors, temperature and humidity sensors, etc. Through some commonly used smart sensors, the convenience and safety of life can be greatly improved. Among the popular smart home product…
Siemens brand 6SE70 book-type inverter : If the password cannot be opened, just change the data in P358 and P359 to be the same. ABB brand ACS600 frequency converter: Enter the password “23032” in parameter 16.03, set parameter 102.01 to false, and you can enter and set all main control board parameters. Mitsubishi brand 740…
Frequency converters used in industry are divided into single-phase and three-phase. This is distinguished by the voltage of the main circuit power supply. Three-phase means that the main circuit must be connected to the RST three-phase 380 volt AC power single-phase main circuit is connected to the single-phase 220 volt LN AC power, and the output is also connected to the UVW three-phase line…
THE START Whether it is an industrial robot engineer or a PLC application engineer, they are all inextricably linked with electricity . A robot engineer with a monthly salary of tens of thousands, who dares to say that he has not installed electrical cabinets and connected wires? If you want to learn the wiring of the distribution box , it is enough to…
Stepper motors are often used for positioning control . It can control the angle of rotation (relatively speaking, distance) by the number of pulses output by the PLC , and the frequency of the pulses controls the rotation speed of the stepper motor. However, it is simple, economical and convenient to use in occasions where the control accuracy is not very high;…