1. First confirm the installation environment of the inverter I. Operating temperature. The inverter is a high-power electronic component, which is very susceptible to the influence of working temperature, and the product is generally required to be 0-55 °C, but in order to ensure the safety and reliability of the work, it should be considered to leave room for use, and it is good to control it at 4 ...

In addition, it is unscientific to select the inverter body alone, without considering whether the inverter selection and capacity matching are appropriate. This will be covered in the following article 1. According to ...

Set F00 to 1 for data protection, which requires the STOP button + RISE button to operate.

1. Analysis of common faults in the main circuit The main circuit is mainly composed of three-phase or single-phase rectifier bridges, smoothing capacitors, filter capacitors, IPM inverter bridges, current limiting resistors, contactors and other components. Many of these common faults* are caused by electrolytic capacitors. The life of an electrolytic capacitor is mainly determined by the ...

The overcurrent tripping of the inverter is divided into short-circuit faults, tripping and rising during operation, tripping during speed reduction, etc. 1. Short-circuit fault (1) Fault characteristics a) *** tripping may occur during operation, but if it is restarted after resetting, it often trips as soon as the speed rises. b ...

In the field, the interference of the frequency converter is more frequent and more serious, and even causes the control system to be unable to be put into use. The operating principle of the inverter is destined to produce strong electromagnetic interference. The inverter includes a rectifier circuit and an inverter circuit, and the input alternating current passes through the rectifier circuit and the flat wave.

(1) Is there a difference between ICU and ICS in the sample? (2) What is breaking capacity? How do I choose a breaking capacity? (3) Why must the circuit breaker use 0.8-0.9 times the rated current value? (4) How to determine the sensitivity current value? (5) The insulation space of the circuit breaker must exist ...

Since the advent of automatic induction motors, variable frequency operation has existed in the form of alternators. Change the rotational speed of the generator, and change its output frequency. Before the advent of high-speed transistors, this was one of the main ways to change the speed of the motor, but due to the generator speed ...

Why should the fan be equipped with a frequency converter? Today, I will discuss it with you. Factory boiler fans, industrial fans, hotel fume fans, etc. all use inverters, so why do fans use inverters? We all know that many air ducts will have a valve, control ...

After the inverter runs uninterrupted for a long time, the high temperature generated inside has serious hidden dangers to the operation of the inverter, especially in summer. The ultimate operating temperature of the inverter inside the inverter is generally 125 °C, and the temperature of the inverter inverter module and IGBT can sometimes reach 110 °C.

In order to achieve a more efficient and controllable operation of the motor, and avoid the waste of power of the motor drive system, the inverter came into being. However, due to the variety of motor load types, the functional requirements for the equipped inverter are also different, so how to choose the right transformer for the motor...

After years of development, the inverter (VFD) has begun to transition from a purely industrial product to a civilian field. The use of VFD can be said to have gone to the countryside, (constant pressure water supply) penetrated into thousands of households (inverter air conditioning). But after using it for a while, you will find that the failure rate of VFD is much higher than that of the average household ...

When we are repairing the inverter, we often encounter the inverter that triggers the overvoltage protection, at this time, I often wonder, can the overvoltage protection measures be different because of the overvoltage? (1) For the interrupting overvoltage of the phase-shifting transformer, the resistor-capacitance absorption network and oxygen ...

In the summer, in terms of the inverter that is indispensable for equipment control and speed regulation, the scorching weather is the hard injury of the inverter's heating. A large number of existing studies and practices show that the failure rate of the inverter will increase with the increase of temperature, the service life will decrease with the increase of temperature, and the ambient temperature will rise.

The inverter is a device that converts the power supply (50Hz or 60Hz) into AC power supply of various frequencies to realize the variable speed operation of the motor, in which the control circuit completes the control of the main circuit, the rectifier circuit converts the AC power into direct current, and the DC intermediate circuit carries out the output of the rectifier circuit.

A common phenomenon of frequency converter interference 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 the signal to collect the pressure, and the pressure transformer is interfered by the inverter; 3. When the inverter starts the motor, the voltage transformer signal is unstable and beats badly; 4. ...

In July 2022, Fuji Electric produced 350 million units of electromagnetic contactors. In fact, many years ago, the output of electromagnetic contactors has been maintained at about 50 million units in 8 years. 351 million electromagnetic contactors! What is this concept? If you import 350 million Fuji Electric ...

It is usually completed in accordance with the three steps of no-load trial operation of the inverter, no-load operation of the inverter with motor and commissioning operation with load, and the following three steps are introduced in detail. 1**No-load test operation of line inverter **No-load test run of the inverter First check that all wiring of the inverter is ...