Inverter soft start cabinet
Frequency converter(Variable-frequency Drive，VFD) is the application of frequency conversion technology and microelectronic technology to control the power control equipment of AC motor by changing the frequency mode of motor power supply. It is mainly composed of rectifier (AC variable DC), filter, inverter (DC variable communication), brake unit, driving unit, detection unit, micro processing unit, etc. The inverter adjusts the voltage and frequency of the output power by breaking the internal IGBT. According to the actual needs of the motor, it supplies the power voltage needed, and controls the speed and the torque of the AC motor smoothly, so as to achieve the purpose of energy saving and speed regulation. In addition, the frequency converter also has over current, overvoltage, overload and other protection functions. Soft starter (soft starter) is a motor control device which integrates motor soft start, soft stop and multiple protection functions. Its main structure is a three phase anti parallel thyristor connected to the controlled motor and its electronic control circuit. Different methods are used to control the conduction angle of three-phase anti parallel thyristor, so that the input voltage of the controlled motor varies according to different requirements, and different functions can be achieved. In the soft starting process, the starting torque of the motor is increased gradually, and the speed of the motor is gradually increased. The soft starter and the frequency converter are two completely different uses. The frequency converter is used for speed control. The output not only changes the voltage but also changes the frequency. When the soft starter is used for starting the motor, the output only changes the voltage and does not change the frequency.
◇Main Features：
●Frequency converter
1、Modular design, compact structure, convenient maintenance, enhanced interchangeability of products。
2、Improve labor productivity, improve product quality, improve the degree of equipment automation, improve the quality of life, and improve the living environment。
3、Saving energy and reducing production cost。
●Soft Starter
1、The motor soft starter provides a smooth and gradual startup process for the motor, reduces the impact of starting current on the power grid, and controls the starting current in the safe range, which improves the original control system's impact on the same power supply network and other equipments running normally due to the larger starting current。
2、Soft start and soft parking mode, reduce the vibration and noise of the equipment, reduce mechanical stress and prolong the service life of the mechanical transmission system。
3、It has perfect protection function: overload, lack of phase, overvoltage and other protection functions. Meanwhile, it can detect all kinds of bad operation of the system involved in the load, which is conducive to the safe operation of the device。
4、The display function on the disk is controlled so that the operation of the equipment can be fully understood in the field。