First, the main function of the braking unit In some applications, the need for rapid speed reduction, according to the principle of asynchronous motor, it can be known that if the slip is larger, the greater the torque, the same braking torque will increase with the increase of the speed reduction rate, so that the system speed reduction time is greatly shortened, and the energy feedback is greatly ...

1. As soon as the inverter of the heat exchange station is opened, the pressure transmitter jumps randomly; 2. In the water supply controlled by the inverter, the pressure transformer is used as a signal to collect the pressure, and the pressure transformer is disturbed by the inverter; 3. When the inverter starts the motor, the voltage converter signal is unstable and beats violently; 4. Pressure transformer (4-20 ...

How LS Contactor Works: Generally, after the contactor coil is energized, the entire coil current will generate a magnetic field, which will make the core inside have electromagnetic attraction to attract the core, and let their communication contactor point action normally closed contact disconnect, or close, which ...

Servo drives and frequency converters are defined differently The driver, also known as servo manipulator and servo amplifier, is a kind of manipulator used to control servo motors, and its function is similar to that of a frequency converter acting on a general communication motor. It is part of the servo system, mainly used for high-precision positioning ...

1. Check the running status of the inverter, whether the voltage and current value during operation are within the normal range. 2. Carefully monitor and record the ambient temperature of the frequency conversion chamber, which is generally between -5 °C and 40 °C. The temperature rise of the phase-shifting transformer should not exceed 130°C. 3. Prevent ...

1. Harmonic disturbance The rectifier circuit will produce harmonic current, which produces a voltage drop on the impedance of the power supply system, resulting in distortion of the voltage wave pattern, and the voltage of this distortion constitutes a disturbance on many appearances, and the common voltage distortion is the flattening of the top of the sine wave. Harmonic wave...

The differences between voltage type and current type inverter are mainly manifested in: (1) the load of the buffer inverter of reactive power is an asynchronous motor, which is an inductive load, and in addition to transmitting active power between the intermediate DC link and the motor, there is also the exchange of reactive power. Because power electronic switches ...

VVVF frequency conversion, vector control frequency conversion, and direct torque control frequency conversion are all one of the AC-DC-AC frequency conversion. Its common disadvantages are low input power factor, large harmonic current, large demand for energy storage capacitors in DC circuits, and renewable energy can not be reflected back to the grid, that is, it cannot carry out four-quadrant operation.

There are many functional parameters of the inverter, and there are generally dozens or even hundreds of parameters for users to choose. In practice, it is not necessary to set and debug every parameter, and most of them only need to use the factory setting value. However, some parameters are very closely related to the application of practice, and some of them are still ...

1. Low-voltage electrical appliances: refers to electrical appliances that play the role of on-off, maintenance, control or regulation in circuits with a rated voltage of 1200V and a rated voltage of 1500V and below. 2. Main electrical appliances: electrical appliances used to send control instructions in the automatic control system. 3. Fuse: ...

"Servo" - the word derives from the Greece word for "slave". People want to treat the "servo mechanism" as a handy tame thing, and act in accordance with the requirements of the control signal. The rotor stands still until the signal comes; As soon as the signal arrives, the rotor rolls; When the signal disappears, the rotor can instantly ...

1. When the power supply is now powered or the inverter is in running condition, do not open the shell of the inverter. Otherwise, an electric shock may occur. 2. When the front cover of the inverter is opened, do not move the inverter. Otherwise, you may be shocked by the high-voltage terminals or exposed charging capacitors. ...

In general, the cage rotor motor will be planned according to the frequency conversion, and at the same time the inverter (Variable-frequency Drive, VFD) drag, in different load characteristics, it is necessary to select VFDs with different functions, so now we ask a question. Can VFD be used with ...

1. The power supply should be connected to the R, S, and T terminals of the VFD, and should not be connected to the VFD (U, V, W), otherwise the VFD will be damaged. It is necessary to clean up the trivial parts of the wire head after wiring, which may lead to abnormalities, failures, and failures, and it is necessary for the VFD to always be clean. When punching holes in the console, note that ...

Through the rational planning of the structure of the low-speed centrifuge, the hygienic dead angle can be effectively eliminated. The transition of the structural parts is smooth, and the surface is polished. External structural components, fasteners, and rollers are made of stainless steel. The housing is a clamshell type, which allows for thorough cleaning of the interlayer space of the centrifuge housing without the need for a bowl ...

Quick to use: There are three cables necessary for the operation of the motor: power cable; Motor power line, motor encoder line. Control line interface X5: Servo enable necessary pin C24V power supply (7,41) Servo enable SR ...

Frequency conversion speed regulation motor is generally selected 4-level motor, the fundamental frequency operation point is designed at 50Hz, the frequency of 0-50Hz (speed 0-1480r/min) scale of the motor for constant torque operation, frequency 50-100Hz (speed 1480-2800r/min) scale of the motor for constant power operation, the entire speed regulation scale of (0 ...

I/O Points: When discussing control systems, I/O points are a term that is often heard. It refers to the input/output point, I stands for INPUT, which refers to the input, and O stands for OUTPUT, which refers to the output. The inputs/outputs are for the control system, and the input refers to the ...

1. As soon as the inverter of the heat exchange station is opened, the pressure transmitter jumps randomly; 2. Use the inverter to control the water supply, the pressure transformer is used as the signal to collect the pressure, and the pressure transformer is disturbed by the inverter; 3. When the inverter starts the motor, the voltage converter signal is unstable and beats violently; 4. Pressure transformer (4-20 ...

1. Soft start function The soft start function of the inverter is no longer necessary to talk about today, and twenty years ago, it was still a very exciting operation, which is also one of the auxiliary basic functions of the inverter. At the beginning of the birth of the inverter, it was aimed at the most widely used three-phase asynchronous squirrel cage ...

Driver: Under the premise of carrying out frequency conversion skills, the servo drive has carried out more advanced control skills and algorithm operations than general frequency conversion in the current ring, speed ring and azimuth ring inside the drive (the frequency converter does not have this ring), and it is much stronger than the traditional servo in terms of function.