Fault analysis of servo motors – LS power generation

What is the reason why the contactor keeps engaging and disconnecting by pressing the start button after the AC contactor is energized? In my personal opinion, most of the situation is caused by the wrong coil voltage of the replacement AC contactor, or the purchase of ...

The main circuit is the power replacement part of the power supply for the asynchronous motor, and the main circuit of the inverter can be roughly divided into two categories: the voltage type is to change the DC of the voltage source to the communication of the DC port of the inverter, and the filter is the capacitor. The current type is to change the DC of the current source to the communication ...

The first generation of LS inverter selects the voltage frequency ratio scalar control method, which carries out frequency conversion speed regulation according to the linear ratio determined by the equivalent circuit of the asynchronous motor. Voltage refers to the effective value of the fundamental wave, and changing U/f can only regulate the steady-state magnetic flux and torque of the motor, not to mention dynamic control. In order to improve the low ...

AC contactor is generally used to turn on or off the power supply in the control circuit of electromechanical equipment, it can frequently turn on or off the AC circuit, and can realize long-distance control. The toucher is mainly composed of a contact system and an electromagnetic system, and the problem of AC contactor is generally generated in the coil.

1. Outstanding frequency conversion speed regulation characteristics Completing the frequency conversion speed regulation of asynchronous motor is the "century wish" that people have been waiting for since the creation of asynchronous motor for 100 years. Through unremitting improvement, enhancement and perfection, the speed regulation function of VFD is not bad, that is, compared with the DC speed regulation system, the part ...

Industrial control automation products inverters are described as power-saving, energy-saving control automation products, therefore, many people will think that as long as the equipment is installed with inverters, it will be able to save energy and electricity, but this is not the case. The inverter of industrial automation products itself produces energy-saving and power-saving ...

LS power automation drives are mainly for industrial enterprises and construction enterprises, including municipal, metallurgical, electric power, chemical and other power-oriented industrial enterprises, car, food and beverage, pharmaceutical and other professional enterprises, as well as OEM equipment manufacturing enterprises. ...

1. The load is too heavy, the load carried by the motor is too heavy, or in other words, the resistance torque of the production machinery exceeds the additional torque of the motor. 2. Use improper overload, for example, increase the operating frequency of the inverter to the extra frequency of the motor, and the motor is in the extra frequency.

The inverter is usually divided into 4 parts: the rectifier unit, the high-capacity capacitor, the inverter and the controller. Rectifier unit: converts alternating current with a fixed operating frequency into direct current. High Capacitance: Stores converted electrical energy. ...

Principle analysis is the most fundamental way to eliminate the problem, when other methods are difficult to see the effect, you can start from the basic principle of the circuit, step by step to view, and finally find out the cause of the problem. To use this method, it is necessary to have a clear understanding of the principle of the circuit, and to grasp the various ...

In Clarivate's recent statement, LS Electric was named one of the top 100 innovators in the world. The trophy handover ceremony was held in Anyang, LS Electric R&D Park, with Kim Yeong-geun, Chief Technical Officer of LS Electric, and Ahn Seong-sik, CEO of Clarivate Korea, acting as representatives of both parties.

The inverter is the power frequency power supply (50Hz or 60Hz) converted into various frequencies of AC power supply to achieve the variable speed operation of the motor equipment, by changing the motor power frequency to achieve speed adjustment, is an ideal high-efficiency, high-speed regulation means. Frequency converters are used in industrial production and residential ...

Rated current of LS molded case circuit breaker: Now in the process of using the molded case circuit breaker, it is necessary to understand the rated current of the molded case circuit breaker, and the rated current of the molded case circuit breaker is generally more than a dozen, mainly 16A...

The rectifier part of the general inverter selects the diode uncontrollable bridge rectifier circuit, and the middle filter part selects the large capacitor as the filter, so the input current of the rectifier is actually the charging current of the capacitor, and the harmonic component is relatively steep and steep.

The selection of the inverter should be considered according to the type of controlled object, speed regulation scale, static speed accuracy, starting torque, etc., so that it is easy to use and economical together with the satisfaction of process and production requirements. 1. Inverter and the motor to be operated (1) The number of poles of the motor. General motor ...

The contactor is an automatic switch for industrial roofs to control its on/off with a button. The contactor consists of an electromagnetic coil, a static armature, a moving armature, a static contact, a moving contact and a fixing bracket. The principle is that when the electromagnetic coil of the contactor is connected to the communication electricity, a strong magnetic field will be generated to make the center of the coil ...

1. Manually operate the work stop button of the inverter panel, investigate the work stop process of the motor and the display window of the inverter to see if there is any abnormal phenomenon. 2. If the inverter presents an overcurrent maintenance action during the process of starting P to abort the motor, ...

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. ...

When using an inverter, a leakage maintainer must not be used. This is a major criterion for the use of frequency converters. Some users choose the corresponding leakage maintainer for the inverter when using the inverter. *The result is: the inverter moves together ...

According to the statistical analysis of the frequency and shutdown time of the inverter's detailed common problems, the correction rate of the main power supply circuit accounts for more than 60%; The main operating parameters are not set properly, resulting in about 20% of common problems; Common problems with control circuit boards account for 15%; 5% of common problems are caused by incorrect operation and external anomalies ...