Analysis of the problem of LS power inverter

The fundamental method of motor protector selection At present, there is no unified standard for motor protectors on the market, and almost every manufacturer has its own type standard. In order to meet the needs of different customers, manufacturers derive many products with different uses, and a wide range of products for the majority of users to choose ...

In fact, there are also options for automatic gain adjustment, which generally divide the control response into several levels, such as high echo, medium echo, and low echo, which can be set by the user according to actual needs. Azimuth Share Buff: 1. Set the share gain of the azimuth ring adjuster; 2 ...

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.

1. The touch screen is controlled by PLC inverter 1. At present, the general control of the inverter needs to use PLC to communicate with the inverter, read the information of the inverter, and then the touch screen communicates with the PLC in order to complete the control of the inverter to start, stop, and monitor the operation of the inverter.

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 ...

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 ...

1. The operator panel is given The operator panel is a simple frequency setting method of the inverter, and the user can directly change the set rate of the inverter through the potentiometer, digital key or rising and descending keys on the inverter operator panel. The big advantage of the operator panel is that it is simple ...

The working principle of the power production contact is: when the contact coil is energized, the coil current generates a magnetic field, and the generated magnetic field leads the static iron core to produce electromagnetic attraction to the iron core, and drives the AC contact action, the normally closed contact is disconnected, the normally open contact is closed, and the two are connected to each other. When the coil is de-energized, the electric ...

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.

To discuss the disturbance problem of LS inverter, we must first understand the operating principle of inverter, from the structural point of view, inverter is divided into direct inverter and direct inverter. The direct inverter is a communication that directly converts the I frequency current into a controllable frequency, and there is no intermediate DC link. Each phase of it ...

With the deepening of factory automation, the high efficiency and low cost of active warehouses, elevators, transfer systems, etc., as well as the high speed, high efficiency and high precision of small CNC machine tools, kneading and forming machines, textile and film machinery, etc.

LS inverter and LG inverter are the same, there is no difference between the two. LS inverter, the full name of LS AC inverter governor, after supplying a variety of configurations, converts direct current into communication power, and changes the general power supply ...

A transistor is a solid-state semiconductor device with a variety of functions such as detection, rectification, amplification, switching, voltage regulation, and signal modulation. A transistor is a variable current switch that can manipulate the output current based on the input voltage. Unlike general mechanical switches (e.g. Relay, swit...)

1. Install an appropriate reactor The input side and the output side of the inverter are connected in series with suitable reactors to absorb harmonics and increase the impedance of the power supply or load, so as to achieve the purpose of pressing harmonics to reduce electromagnetic radiation in the transmission process. After pressing the harmonic current, the power factor is changed from the original ...

The peripheral equipment of the inverter mainly includes cables, contactors, air switches, reactors, filters, braking resistors, etc. Whether the selection of the peripheral equipment of the inverter is correct and suitable also directly affects the normal operation of the inverter and the service life of the inverter.

In the course of regularly checking the variable-frequency drive (VFD) of the tensile testing machine, we can visually check the operating status directly from the outside. (1) The ambient temperature is normal, and it is required to be between -10°C and +40 ...

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 ...

(1) The core noise is large: it is normal for the electromagnetic system to produce a slight humming sound during operation, if the sound is too loud or abnormal, it can be judged that the electromagnetic system has a problem, and there are three reasons: (1) Poor contact between the armature and the core or tilting of the armature. After repeated collisions between the touch of the armature and the core, ...

1. Trapezoidal stairs start from the horizontal line and end up with a vertical line (generally you can omit not to draw, only draw the left busbar). On the left side of each row is the junction combination, indicating the conditions that drive the logic coil, while the logic coil indicating the effect can only be connected to the bus on the right. The contact can not appear in the coil right ...

Each type of servo motor has additional torque, maximum torque and servo motor inertia and other parameters in the standard items, each parameter and load torque and load inertia must have a relevant connection, the output torque of the servo motor should meet the requirements of the movement conditions of the load organization, such as the speed of the acceleration ...