The difference between overload and overcurrent of the inverter

1. What is a self-learning motor of inverter? Enter the motor nameplate (voltage, current, Hz rating) in the inverter parameters, and then the inverter actively measures other parameters of the motor. Second, why should the inverter learn by itself?

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.

LS inverter, the full name of LS communication frequency conversion governor, after supplying a variety of equipment, converts direct current into communication electricity, and changes the voltage and frequency of ordinary power supply input to control the speed of the motor, to meet different industrial needs, and then complete the energy saving and environmental protection of the automation system. ...

1. Energy consumption type This method is to connect a braking resistor in parallel in the DC circuit of the inverter, and control the on/off of a power tube by detecting the DC bus voltage. When the DC bus voltage rises to about 700V, the power tube is turned on, and the regenerative energy is passed into the resistor.

1. Not manifested. This situation is more common, generally in the normal condition of the external three-phase power supply, it is the switching power supply of the inverter burned, and the 24 volt power supply on the output board of the inverter terminal can be measured.

As for the use of vector-operated motors, it can be divided into two categories, namely non-reactive vector control (SVC) and reactive vector control (FVC). Vectorless Handling (SVC): Due to the speed response, additional equipment for the encoder is installed in the motor dragged by the inverter, which is cumbersome. Here...

Now enterprises need to use a lot of ventilator inverters, the larger the scale of the enterprise, the more production workshops, the more ventilator inverters will be used. However, no matter how large the enterprise, there is a primary ventilator inverter, the selection of this kind of inverter is very important, because if there is no ...

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 ...

1. The influence of electromagnetic disturbance on the inverter: In the modern industrial control system, the microcomputer or PLC control technology is mostly selected, and in the process of system planning or transformation, it is necessary to pay attention to the disturbance of the inverter to the microcomputer control board. The inverter is disturbed by the outside world, because the user ...

1. Circuit wiring (1) The input (R, S, T) and output (U, V, W) of the inverter cannot be connected incorrectly; (2) Wire diameter selection (1) The wiring of the power supply and the inverter and the wire diameter selection method of the motor of the same capacity are the same; (2) The wiring between the inverter and the motor should consider the line electricity.

Frequency conversion motor refers to the motor that runs continuously with 100% rated load in the range of 10%-100% rated speed under standardized environmental conditions, and the temperature rise will not exceed the allowable value of motor calibration. Communication contactors are not necessary for frequency converters and are built in, ...

Standardized procedures for safe operation of generator sets 1. Preparation before starting (1) The operators of the computer room should abide by the safety operation procedures, wear work clothes and insulated shoes, and the crew should have a clear division of labor. (2) Check whether the flywheel and part of the generator are not defective. ...

The inverter mainly has the following functions: 1. Soft up The direct launch of the inverter motor will have a severe impact on the power grid, and it will also have too high requirements for the capacity of the power grid, which is extremely unfavorable to the service life of equipment and power grid circuits.

Frequency conversion speed regulation motor is generally selected 4-level motor, the fundamental frequency operation point is designed at 50Hz, the frequency of 0-50Hz (speed 0-1480r/min) scale of the motor for constant torque operation, frequency 50-100Hz (speed 1480-2800r/min) scale of the motor for constant power operation, the entire speed regulation scale of (0 ...

The inverter is a high-tech intelligent product, in order to let it complete the specified control mission, it must be set parameters, otherwise, it is like the computer is not installed and used, and it cannot be operated normally. The parameter setting is carried out by the control surface of the inverter. All kinds of inverters ...

Features of SUSOL series circuit breakers: It can be used as the main switch of electrical equipment, and the limit breaking ability is high, Icu=Ics Modular construction of circuit breakers: Tripper replacement (TS series) can be combined in a variety of combinations, such as ...

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.

The first generation of LS inverter selects the voltage frequency ratio scalar control method, which carries out frequency conversion speed regulation according to the linear ratio determined by the equivalent circuit of the asynchronous motor. Voltage refers to the effective value of the fundamental wave, and changing U/f can only regulate the steady-state magnetic flux and torque of the motor, not to mention dynamic control. In order to improve the low ...

There are many functional parameters of the inverter, and there are generally dozens or even hundreds of parameters for users to choose. In practice, it is not necessary to set and debug every parameter, and most of them only need to use the factory setting value. However, some parameters are very closely related to the application of practice, and some of them are still ...

1. Soft start function The soft start function of the inverter is no longer necessary to talk about today, and twenty years ago, it was still a very exciting operation, which is also one of the auxiliary basic functions of the inverter. At the beginning of the birth of the inverter, it was aimed at the most widely used three-phase asynchronous squirrel cage ...