11. For the case where the inverter drives the ordinary motor for constant torque operation, long-term low-speed operation should be avoided as much as possible. Otherwise, the heat dissipation effect of the motor becomes worse and the heat is severe. If you need to run at low speed and constant tor

Inappropriate use of the inverter, not only can not play its excellent functions, but also may damage the inverter and its equipment, or cause interference, so the following matters should be noted during the use: 1. The inverter must be selected correctly. 2. Read the product manual carefully and w

To deal with the overvoltage fault, the key is how to deal with the excess energy in the intermediate DC loop in time, and how to avoid or reduce the excess energy feeding to the intermediate DC circuit, so that the degree of overvoltage is limited to the allowable limit. 1. In the case of an impuls

Frequency conversion speed regulation system is superior to DC drive because of its advantages, and it is regarded as the preferred transmission scheme in many occasions. In modern frequency conversion speed regulation system, 16 bit or 32 bit single chip microcomputer is used as the control core, t

Eight acceleration and deceleration mode selection: also called acceleration and deceleration curve selection. Generally, the frequency converter has three kinds of curves: linear, nonlinear and S-curve. The nonlinear curve is suitable for variable torque load, such as fan and so on, and the change

Five offset frequency is also called deviation frequency or frequency deviation setting. The function is used to adjust the output frequency when the frequency is set by an external analog signal (voltage or current), as shown in fig. 1. Some frequency converter when the frequency set signal is 0, t

Two torque lifting, also called torque compensation, is a method to compensate for the low speed torque reduction caused by motor stator winding resistance, and to increase the low frequency range f / V. When set to automatic, the voltage of acceleration can be raised automatically to compensate the

You must know the frequency converter's several main parameters mainly because the frequency converter function parameter is many, generally all has dozens of even hundreds of parameters for the user to choose. In practical application, it is not necessary to set and debug each parameter, most of wh

The motor driven by frequency converter is induction AC motor, also called AC asynchronous motor. Most of the motor used in industry is AC asynchronous motor. The rotating speed of asynchronous motor depends on the rotating speed of its stator rotating magnetic field, that is, synchronous speed. The