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FAQ

Today, I was asked the question, and I also brought it to you to share the following Oh!

The frequency of the electricity we use everyday is 50Hz. If we want to change the frequency, we have to change it through the frequency converter.The working principle of frequency converter is to change the frequency alternating current into no frequency direct current, and then control it by electronic circuit so that it can adjust its frequency alternating current at any time.The inverter is similar to the back half of the inverter, which converts the direct current into alternating current.

What is the working principle of elevator frequency converter?

Yaskawa 616G5 transducer current vector in the world as one of the inverter control, speed range to reach 1:1000, the control accuracy of 0.02%, with the starting torque at zero speed can reach 150% characteristics. In particular, Yaskawa unique all fields, automatic torque boost function can get comfort and good stability in the lift drag in.G5 can accept controllers such as multi speed frequency command PLC or analog voltage and current instruction; can adapt to all kinds of motor vector control and self-learning to obtain good characteristics; low speed starting smoothly excellent reliability and high cost of hardware.

What does "G" and "P" mean in the converter model?

G stands for constant torque, usually overloadedP stands for torque change, usually light load type

What does the RUN key on the inverter mean? How do you use it?

According to the actual needs of the motor to provide the required power supply voltage, and then to achieve energy saving, speed control purposes, in addition, there are many inverter protection functions, such as over-current, overvoltage, overload protection, etc.. With the continuous improvement of the degree of industrial automation, inverter has also been widely used.

How can I learn the converter well?

Frequency converter this thing, in fact, still very practical, so can go to customers to install and debug, is a shortcut to quickly learn the frequency converter. In the installation of debugging, you can take time to read several times the frequency converter manual, and if you can discuss with technical support, I believe you will soon enter the role.

I would like to ask, the inverter in use in the grid is very high?

In the process of using frequency converter, the demand for voltage fluctuation of power grid is not high, generally single-phase is allowed to + 20% fluctuations, three-phase is allowed to + 15% fluctuations.Frequency converter is the application of frequency conversion technology and micro electronics technology, by changing the power supply frequency of the motor to control AC motor power control equipment. The frequency converter is mainly composed of rectifier (AC DC converter), filter, inverter (DC AC converter), brake unit, drive unit, detection unit, micro processing unit and so on. Inverter by internal IGBT drive voltage and frequency off to adjust the output power, the power supply voltage required to provide according to the actual needs of the motor, so as to achieve the purpose of speed, energy saving, in addition, there are a lot of protection drive, such as over-current, over-voltage, overload protection and so on. With the continuous improvement of the degree of industrial automation, inverter has also been widely used.

Knowledge, principle and operation method of frequency converter.

The three major parts of the working principle of frequency converter:This is how the inverter works, but how does it work? Mainly composed of three components. (1) convert the power frequency power to the rectifier of the DC power: it transforms the power frequency power into the DC power supply. A reversible converter can also be constructed using two sets of transistor converters, which can be regenerated for their reversible power direction. (2) absorption in the converter and inverter voltage generated by the pulsating "flat wave circuit" in the rectifier DC voltage is rectified, ripple voltage with power frequency 6 times, in addition the pulsating current generated by the inverter to the DC voltage fluctuation. (3) the DC power conversion for AC power rectifier with "inverter": instead, the inverter is DC power converter for AC power required frequency, to the time the 6 switch off, you can get 3 phase AC output.

How do you understand the ramp up (descent) time of the inverter? Thank you!

The ramp up time is to start from the 0 speed, inverter, running to reach the given speed (for example: 1420) the time required, in general, the longer the time, the frequency converter and motor impact is small. In the actual work process, according to process requirements to set the length of time. (more than 10-15 seconds) or so, if it is a pump or fan motor, do not need to change its rise time, the default can.