The output side of the inverter is PWM wave, and there is the capacitive effect of the long cable between the motor cable and the earth. When the cable with shielding layer is used, the capacitive effect is more obvious. When the inverter is working, the capacitor is charging and discharging. A current flows into the earth through the capacitor and flows back to the inverter from the grounding wire on the side of the input line to form a current loop.

In the actual operation process, the frequency converter will always be affected by the use of the environment, such as temperature, humidity, air quality and so on. It is hard to avoid that there are all kinds of fine dust floating in the production workshop

The frequency converter light failure does not affect the system continuous operation. After the light fault of the inverter, the inverter will only provide the fault report. The user can find the fault by recording the fault of the touch screen of the inverter. If this kind of fault occurs during system operation, the inverter will not stop immediately. In the state of stop, if there is such a fault, the user can also start operations.

The frequency converter is a kind of high-tech product, mainly composed of power electronic devices and microelectronic devices. The three-phase ac power grid is connected to the input end of the converter. The input terminal of the inverter is the rectifier circuit and the output terminal is the frequency conversion circuit. Therefore, the voltage and current on the input side and the output side contain rich harmonics

Generally speaking, the factory motor is based on a given power-frequency voltage (380V, 50hz) to obtain the rated speed value. If it does not reach 380V under actual working conditions, such as only 300V and 50hz, the voltage is obviously under pressure. Basically, it can't reach the rated speed because, depending on the design of the motor, it must have a voltage of 380V and a frequency of 50hz.

On the control panel of frequency converter: ENTER. Parameter confirmation. After we adjust the value of the parameters to be adjusted, we need to press this key to confirm the storage;

Inverter is a power control device that converts power supply into another frequency by the on-off action of power semiconductor devices. With the rapid development of modern power electronic technology and microelectronic technology, the high-voltage and high-power variable-frequency speed regulating device is becoming increasingly mature. In recent years, the high-voltage problem, which was always difficult to solve, has been well solved by means of device series or unit series.

Scientific selection of frequency converter is crucial to the normal operation of frequency conversion system. A lot of beginners to the general inverter selection method understanding is not enough, or even if you know the method, but also not sure whether the choice of the inverter model is the right solution, the following small an for everyone to solve the mystery.

Firstly, the selection of frequency converter should meet the needs of field conditions. If the site requires a single machine to achieve 680KW, we will choose AMB300 series inverter; If the field requires closed loop vector control, it is necessary to choose AMB600 series inverter; If the field only requires 1 analog output, 1 relay output, you can consider the AMB100 series inverter.

All frequency converter manufacturers boast that their products cost - effective, the common reason, the old woman said the old woman is right. However, xiao an suggested that the type selection of inverter can be domestic to change the need not imported, can be used general need not special, can use small power need not large power, simple is to save money.

Converter selection must consider the after-sales service, because converter maintenance is a small matter, affect the production schedule is a big matter. Most users think that the quality of foreign brand inverter is more stable than that of domestic brand inverter. In fact, after 2010, domestic inverter technology has achieved a fundamental technological breakthrough.

The selection of frequency converter is mainly determined by the load characteristics of the drive and the actual working current of the motor. In addition, there are the following considerations:

The selection of frequency converter is a technical work, if the selection is not appropriate, the frequency converter may be damaged, serious will affect the normal production of the factory, so scientific and reasonable selection of frequency converter is crucial. The following list of inverter modeling principles for end-users reference.

Rapid shutter door is through the rapid shutter door frequency converter and drop, shorten the material and the pedestrian's entrance and exit time and design of automation equipment, in foreign factories have been popular, and the domestic rapid shutter door industry started late, all aspects of technology and supporting is not very perfect. In order to improve the quality of products and ensure the safety of the factory, rapid rolling door production and application will be an inevitable trend.

Some say volcanoes or earthquakes; Others say that hordes of hunters are coming; But few people guessed it was the army of ants. Because, the ant is very small, almost any animal can step on it. Who would have thought that elephants and lions were afraid of little ants?

Recently, our company once again welcomed the supervision and audit of "iatf16949:2016 automobile industry quality management system". The "supervision and review" from the version of a full year after the review.

Corporate Culture, or Organizational Culture, is an organization's unique cultural image composed of its values, beliefs, rituals, symbols, ways of doing things, etc. In a word, it is the various aspects displayed by an enterprise in its daily operation. Enterprise culture is the spiritual wealth and material form with the characteristics of the enterprise created in the production

Time: May 16-19, 2019Coordinates: zhejiang ningbo international convention and exhibition center no. 3 hall booth no. A33 (key points, to be tested!)Event: the 4th ningbo international intelligent factory exhibition in 2019 opened at the ningbo station of ambition exhibition,

Recently, good news came from ambition xin research and development center. Ambition company independently developed a patent application (patent number :201210523969.8) for the three-phase current detection circuit for frequency converter, which was authorized by the state intellectual property office and granted the invention patent certificate. The acquisition of the patent marks the ambition credit company's overall technical level of leading domestic level.

On April 11, belonging to the core of xuzhou construction machinery group research and development institutions - jiangsu xugong construction machinery research institute co., LTD. (hereinafter referred to as xugong institute) and secondary subsidiary - xuzhou xugong special engineering machinery co., LTD. (hereinafter referred to as special machinery xugong line leading to visit "amb inverter production base".