There are many function parameters of frequency converter, generally there are tens or even hundreds of parameters for users to choose. In practical application, it is not necessary to set and debug every parameter, most of them just need to use the factory settings. However, some parameters have a lot to do with the actual use, and some are also interrelated

How to choose the speed control mode of general frequency converter: general frequency converter is also called high performance frequency converter, PG free vector frequency converter, torque control frequency converter, why? Originally, the speed control mode is different, so how to choose the speed control mode of the inverter?

The supplier of Inverter Brake Unit reminds you: in the industrial production and daily use of inverter, because of the obvious energy-saving effect of inverter, convenient adjustment, simple maintenance, networking and other advantages, more and more widely used inverter driven motor system, but the interference caused by the special working mode of inverter can not be ignored.

In order to strengthen your understanding and understanding of the frequency converter, let's talk about the daily inspection of the inverter control cabinet for you. For details, please see the summary of the following points:

Energy feedback device supplier reminds you: for mechanical products, how to maximize energy saving while bringing the minimum burden to the environment has always been an important topic for scientists. The traditional energy-saving research mainly focuses on improving the work efficiency and performance of various parts of the project, and has little research on how to realize energy recovery and reuse.

Therefore, when installing the frequency converter, the distance between the central control room, frequency converter and motor should be considered comprehensively, so as to minimize the influence of harmonic and improve the stability of control.

Brake unit supplier reminds you: with the rapid development of power electronic technology, computer technology and automatic control technology, electric drive technology is facing a new revolution. In the field of electric drive, the frequency control system has become the mainstream because of its high efficiency and good performance. Benefiting from the promotion of energy saving and emission reduction

In today's rapid development of science and technology, with the continuous improvement of industrial automation, inverter has been widely used. It is very important to choose a suitable frequency converter for the normal and efficient work of the frequency converter. However, in the actual use, we should pay attention to some misunderstandings.

When the potential energy load transmitted by the motor is lowered, the motor may be in regenerative power generation braking state; or when the motor moves from high speed to low speed, such as stopping and decelerating, the frequency can be suddenly reduced, but due to the mechanical inertia of the motor, the motor may be in the regenerative power generation state.

Special frequency converter supplier reminds you: in the daily industrial control production, there is a frequency converter without rectifier unit, which is the so-called AC-AC converter. But the vast majority of the market are AC-DC-AC converters, that is to say, they contain rectifier units. This is a pattern formed by technology and market competition to a certain extent.

Energy saving device supplier reminds you: how to choose different frequency converter for load? If there is special frequency converter for load, select special frequency converter; if not, you can only choose general frequency converter.

In daily use, the bridge rectifier circuit of general purpose inverter is three-phase uncontrollable, so it is impossible to realize bidirectional energy transfer between DC circuit and power supply. The most effective way to solve this problem is to adopt active inverter technology

When selecting the type, we should first consider the operating conditions whether one or more motors should be started or stopped at any time during the operation of the frequency converter.

For the maintenance of frequency converter, there are many novices who are not familiar with the false load. They have saved many modules with the false load, because the novice maintenance personnel generally do not know how to do this. Now when the light is on, it means that the module will be broken again. False load is to use a resistor of several hundred ohm (light bulb can also be used) to connect it to the main circuit.

This should be the situation that friends encounter the most, big horse pulling car, small horse pulling cart everywhere. The big horse pulling the small car is good, at least there is no big problem in use. At most, the investment is increased, and the equipment can still run normally. However, the small horse can not pull the cart. When the load is small, it runs normally

It is important to set up the torque lifting function. The frequency converter is widely used in V / F control mode. When the power frequency of the motor decreases, the speed of the motor will also decrease. If the load torque remains unchanged, its output power will also decrease. According to the principle of energy conservation, if the torque of the load is constant

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Reason: the inverter is composed of numerous electronic devices, which will produce a lot of heat when it works, especially when IGBT works at high frequency. If the ambient temperature is too high, it will also lead to the high temperature of the internal components of the frequency converter. In order to protect the internal circuit of the frequency converter

Frequency converter plays a protective role on the motor, but it does not mean that the motor will not be burned. For most cases, the frequency converter can protect the motor from burning, such as overload, lack of phase, but this depends on your parameter settings and actual use. For example, if your over-current protection setting is too large (generally

There are many kinds of production machinery, with different performance and process requirements, and their torque characteristics are also different. Therefore, before the application of frequency converter, we should first make clear the nature of the load carried by the motor, that is, the load characteristics, and then select the frequency converter and motor.