1. Download the control program.
2. Put the inverter in open-loop experimental mode and set the appropriate parameters.
3. Connect the incoming cable of the inverter. The cable on the output side of the inverter is not connected.
4. Push the high-voltage cabinet to the experimental position, close the switch, and simulate the high-voltage signal from the inverter side.
5. The user sends it to the easy-to-sell industrial control inverter. Note: Because the incoming line isolation transformer excitation inrush current is large, the incoming line switch may trip, and the high-voltage cabinet quick-break multiple should be appropriately amplified at this moment. Generally, it is 8-10 times the input current of the primary side of the transformer.
6. After the high voltage is sent, check whether the voltage displayed on the panel is consistent with the actual voltage and whether the frequency is positive.
7. Start the inverter from the inverter operation panel and record the corresponding voltage waveform at different outputs.
8. Disconnect the high voltage again and prepare to run with the motor.
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The reason for the overload trip of the inverter - LS generates electricity
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.
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Inverter installation environment requirements - LS power generation
Inverter device environmental requirements 1: operating temperature;
The inverter is a high-power electronic component, which is easily affected by the working temperature, and the product is generally required to be 0-55 °C, but in order to ensure that the work is [safe] [complete] [can be] [reliable], the use should be considered to leave room for control, and the control is at 40 ...
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The main functions and functions of LS power production PLC
1. For sequential control: sequential control is based on the current and pre-historical conditions of the input switch, and produces the required switching output, so that the system can work in a certain order. This is the basic manipulation of the system. It is also a common manipulation in discrete production processes.
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LS power inverter parts replacement and its requirements
The inverter is composed of many electronic parts, such as semiconductor components, etc., in the operation and maintenance involves the replacement of a related component, because of the composition or physical characteristics of the inverter, it will deteriorate in a certain period of time, so it will reduce the characteristics of the inverter, and even ...
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Inverter life extension method - LS power generation
1. The inverter should not be installed on the equipment with a sensation, because the main circuit connection screw in the inverter is easy to loosen, and many inverters are damaged due to this reason.
2. Wiring problem: the input terminal of the inverter should be connected to a ...
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The lightning protection port of the inverter - LS generates electricity
According to the applied engineering practice, variable frequency drive (VFD) lightning strikes can be roughly divided into direct lightning, induced lightning and conducted lightning. But no matter what form it takes to reach the device, it can be summarized as a lightning surge from the following four parts, which are called lightning protection ports here, with V ...
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Analysis of the working principle of the inverter - LS power generation
The rectified DC voltage of the rectifier contains the pulsating voltage of the power supply 6 times the frequency, and the pulsating current generated by the inverter also changes the DC voltage.
The main power is the power replacement part of the power supply for the asynchronous motor voltage regulation and frequency modulation power supply, and the main power of the inverter can be roughly divided into two ...
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Analysis of common faults of LS AC contactors
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.
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The meaning of power in LS power inverter
Power refers to the amount of work done by an object in a unit of time, i.e., power is a physical quantity that depicts how fast or slow work is done. The amount of work is constant, and the shorter the moment, the greater the power value. The formula for finding power is power = work/moment. Power is a physical quantity that characterizes the degree of work done fast or slow. Units made in the hour ...
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The basic principle of motor protector selection - LS power production
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 ...
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The essence and use of LS power PLC module
1. What is PLC?
PLC control system, Programmable Logic Controller, programmable logic controller, a digital operation of electronic devices specially designed for industrial production planning, it uses a class of programmable memory, used in its internal storage program, the execution of logic...
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Motor & Electrical Control Technology Tips - LS Electricity Production
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: ...
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LS power circuit breaker wiring method
The wiring method of the circuit breaker has the front of the board, the back of the board, the plug-in type, the drawer type, if the user has no special requirements, they are supplied according to the front of the board, and the wiring before the board is a common wiring method.
1. Wiring method behind the board: The wiring feature behind the board is that the circuit breaker can be replaced or repaired, without wiring from the beginning.
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The torque of the inverter is directly used as the controlled quantity mode - LS generates electricity
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.
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Relationship between motion control and frequency converter
Motion control has a significant period characteristic, it is a combination of a variety of high-tech to push industrial automation, office automation and home automation to a higher stage. At present, the motion control is mainly composed of three parts: inverter, motor and controller.
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Specifications for the use of power converters
Operating regulations for power inverters
Maintenance & Installation
Work according to the weight of the product.
The number of inverter boxes cannot be stacked in excess of the specified number.
Install according to the user manual.
Do not open the case during transport.
Do not place ...
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Single-table driver for HLP2B
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Quickly locate switching power supply faults
Switch Mode Power Supply (SMPS) will cause the base of the switch tube to fail to get the switching pulse and intermittently operate due to the short circuit of the load, the failure of the self-vibration circuit and the loss of control of the protection circuit, which makes it difficult to locate the shortcomings of SMPS. Difficult to repair the work ...
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Inverter maintenance principle analysis and inspection method
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 ...
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The Importance of Welding in Inverter Maintenance – LS Generates Electricity
Whether the welding skills of the inverter repair personnel are excellent is directly related to the quality and results after repair. If the welding quality is not up to standard during repair, the pins of the components will be broken when the components are disassembled, the printed circuits on the PCB will be damaged, the components will not be soldered firmly when the components are installed, and the two components ...
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