The production capacity of frequency inverter is almost 800,000 pieces per year. We are focusing on research, development ,manufacture, sales and service of the VFD AND MV VFD . With superior quality, competitive price and excellent service, our products have been won a good reputation in the world. Successfully offered frequency inverter to many clients from different countries and regions on the basis of mutual benefit, mutual trust and mutual development, such as UAE, Germany, Russia, Korea, Brazil, Saudi Arabia, South Africa, and Nigeria and so on
Rated output current (A)
Motor power (kW)
Rted input voltage
Input power factor
0.96 with rated load
120% 1 min, 150% immediately
expanded according to requirement
<90% without condensation
Product Features: 1.Adopts 16 bit microprocessor, sine wave PWM control 2.Automatic torque ascension and automatic sliding compensation function 3.Output frequency 0.1-400 Hz 4.8 period of speed setting and 7 period can be running the program 5.Low noise, carrier frequency can from 1 kHz-15 kHz adjustment 6.Two paragraphs Acceleration and deceleration time and two segments of the S Curve slow and deceleration 7.Simulation frequency set acceptable 0-10 VDC, 4-20 mA 8.The built-in serial communication interface RS-485(baud rate can reach 38400) 9.Save energy running and automatic voltage stabilizing section function (AVR) 1.Adjustable V/F curve Acceleration and automatic and deceleration function 11.Simple vector control and built-in PID control, and the simple positioning function 12,Sleep/wake up function and zero velocity keep function
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Q:How to choose a Siemens inverter for a 5.5KW three-phase motor (2 pole)?
Siemens frequency conversion dedicated input / output filter, reactor, you contact us but smell it, the quality is guaranteed. We look forward to cooperation.
Q:What is the laptop adapter
3, classification: according to the use of points (AC, such as home, office use AC are called AC; DC, such as the car, the aircraft are used DC are called DC); by the output voltage current (12V series, ASUS more commonly used, such as ASUS 12V3A; 15V series, TOSHIBA more commonly used, such as TOSHIBA 15V3A, 15V4A, 15V5A; 16V series, SONY, IBM more commonly used, such as SONY 16V4A, IBM 16V4.5A; Series, HP, such as HP 18.5V3.5A; 19V series, such as ACER 19V3.42A, TOSHIBA 19V3.42A; 19.5V series, such as DELL 19.5V3.34A, SONY 19.5V4.1A; 20V series, such as DELL 203.5A , LENOVO 20V3.25A; 24V series, such as APPLE 24V1.875A; 9.5V-24V series, such as Acharger ALS-185A35C).
Q:What is the single axis of the inverter and multi-axis applications
The frequency changer mainly consists of rectification (alternating current direct current), filter, re-rectification (DC variable AC), brake unit, drive unit, detection unit micro-processing unit and so on.
Q:How to choose the right inverter?
1, constant power load
During the operation of the load device, the power remains constant. Such as machine tools, cutting machines, paper machines and so on.
For example: a marble cutting machine frequency conversion system, is a constant power load, load inertia, inverter selection configuration A power with the G-type machine, plus the braking unit and braking resistor.
Q:How is the notebook with a power adapter?
Refer to the following factors when purchasing:
Choose the brand:
The principle is to choose the same type with the brand, if not, it can only find other brands. Now online to sell a lot of notebook power adapter are cut corners of the substandard products, the normal use of what should be no problem, once the accident will burn your laptop, save dozens of pieces but burn thousands of pieces of notebook worth the candle. (Such as the actual only 19V3.42A, but the standard 19V4.74A, this will lead to a very slow charge, and even damage the battery and laptop computers. There are some protection removed, this more horrible, there Accidentally burn the laptop.
Q:How does the variable frequency motor output torque at very low frequencies?
50hz the following frequency, u constant, current and frequency is proportional to the frequency down the output current is also down, and torque and current is proportional to the natural torque is small
Q:What parts of the inverter composition
Frequency control technology is an important development direction of modern power transmission technology, with the development of power electronics technology, AC frequency conversion technology from theory to practice gradually mature. Inverter not only smooth speed, large range, high efficiency, start current is small, smooth operation, and energy saving effect is obvious. Therefore, the exchange frequency control has gradually replaced the traditional traditional slip speed, variable speed control, DC speed control system, more and more widely used in metallurgy, textile, printing and dyeing, smoke machine production lines and buildings, Water supply and other fields. However, due to the environment, the use of life and man-made operation and other factors, affecting the life of the inverter greatly reduced, while the use of a variety of failures have occurred. Here we are on the composition of the inverter and common problems and countermeasures and we discuss. Generally divided into rectifier circuit, flat wave circuit, control circuit, inverter circuit, and so on several major parts.
Q:On the laptop power adapter problem
Can be simply calculated; 19 * 4.74 = 90.06 90W
19 * 3.42 = 64.98 65W
Obviously, the second is a virtual standard, can not be used
It is not enough power, ranging from the adapter burned, while the motherboard is like other notebook hardware damage, unpredictable.
The adapter is likely to burn after the high and low voltage to the notebook board burned the situation more common.
My notebook is dell original 4.62A, when playing the game are very hot.
Q:If it is 8-pole variable frequency motor, enter the motor nameplate parameters in the inverter input for the 4 pole can?
Motor brand above all, the general number of wrong is the inverter shows the speed is not right, for the speed control requirements are not high places will not be a problem, you can use
Q:Motor 2 pole and 4 pole in the inverter with what set to show
Motor parameters, there must be a parameter "motor pole" of the bar.