ABB is a well-known in Europe and the world. High and low voltage, high and low voltage electrical appliances, transformers, power generation equipment, etc. are all mature products, and are widely used in power plants, papermaking, and other industries. It should be said that abb's products have been unanimously recognized by users in China.
Abb frequency converter plays an important role in the inverter market with its stable performance, rich option expansion function, flexible application programming environment, good torque characteristics, and various series for different occasions. The market performance of abb inverter in China is obvious to everyone. Abb frequency converter is in the forefront of China's inverter market with its strong brand effect and high social recognition.
The market for abb inverters entering China is not too long. It has also undergone a process of being unfamiliar-cognitive-accepted by customers, but its development is very rapid. In the early days, we can see that abb inverters mainly have low-power acs300 inverters and standard acs500 inverters. It should be said that these two series of inverters have not won too many customers in China, and abb inverters are really The majority of users know and accept the high-end inverter of acs600 using dtc control mode. Stable, reliable, feature-rich, and flexible application, this is the magic weapon for abb inverters to win the market. As the product continues to update, abb now introduces the acs800 alternative to the acs600 drive. Compared with the acs600, in addition to maintaining the dtc control mode and all the original functions, the most obvious functional change of the acs800 is the addition of the simple plc function. No special tools and programming languages ​​are required, and the user can customize the programming to 15 modules. And can draw the program on the function module template to store the program. In addition, we also know that the options for the acs600 and acs800 inverters are particularly rich. In addition to the common i/o expansion modules, profibusmodbus modules for communication, etc., abb has also developed several macro programs for different industries, including master-slave macros used in papermaking machinery and swing frequency macros used in textile machinery. And pfc macros used in constant pressure water supply, pid control macros, torque control macros, etc. It should be said that the abb inverter's optional features are quite rich, basically meeting the needs of various industries for the function of the inverter. For different levels of customer base, abb has introduced magnetic flux vector control acs550 inverter, which is a frequency converter developed for mid-end customers, it should be said that there is a high competitive advantage in cost performance, in addition to Acs400 inverter for low-end users, as well as acs100, acs140 low-power inverter.
Since abb inverters still have a very large amount in the Chinese market, including some early use of acs200, acs300, and acs500 have also entered a period of frequent failures. In use, there are bound to be many problems. Below we will have some abb inverters. Common faults are discussed here with the majority of users.
Common faults of acs300 inverter
For the inverter of acs300, the fault that is often encountered is the damage of the switching power supply. The switching power supply of the acs300 inverter adopts a waveform generator integrated block called lt1244 which is similar to the uc3844 function, which is affected by the sudden change of the working voltage and the switching power supply. The damage of the load causes the damage of the integrated block to occur. Due to the long years of use, the electrolytic capacitor has reached its service life, and the capacitor used for filtering becomes the direct cause of the damage of the switching power supply. In the maintenance, I will encounter the rectifier bridge of the acs300 inverter often damaged. Maybe they choose the most compact three-phase full-bridge rectifier of International Rectifier from the economic point of view. The volume and load current are small, and the heat dissipation is small. It is also poor, so damage will occur after a period of use. The probability of failure of the acs300 main control board is also quite high. The communication failure between the control panel and the motherboard, the motherboard cpu failures sometimes occur, and such faults are often difficult to eliminate. The acs300 selects Mitsubishi's ipm module. Relatively speaking, the probability of failure is low, the module is damaged, and it can only be replaced, but the drive circuit must be completely normal before replacement.
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