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:Inverter signal line analog 4-20mA connection positive and negative can be reversed?
Analog input signal is particularly vulnerable to external interference, so the general use of twisted shield as a signal line; and wiring as short as possible, generally not more than 20 meters; if some use conditions are vulnerable to external serious interference, the analog signal Side need to add a filter capacitor or ferrite core.
Q:Variable frequency conversion frequency difference characteristics based on,
Frequency conversion is better, you can smoothly change the synchronous speed.
Change the difference is relatively poor, also known as "energy consumption slip" speed. Synchronous speed unchanged, the slip rate has changed, so the speed changed.
Q:Ordinary 4-pole motor Under the control of the inverter, the higher the speed, the higher the power or the slower the power
The original you are the ordinary motor ah, this ordinary motor can not afford too high frequency. Often at high frequencies or low frequency work will burn the motor. The higher the speed, the current will increase, the lower the speed, the current will be reduced. Its power is not much change. You still with a special frequency control motor it. Frequency conversion motor is a special design, the use of frequency converter for the drive power, the motor and inverter electromechanical integrated frequency control system, so as to achieve low frequency constant torque operation and high frequency constant torque operation. This motor has good speed performance and significant energy saving effect
Q:How does the laptop's power adapter open
First put the power adapter on a clean desktop, with electric knife to the upper and lower cover along the edge of the gap slowly pry open, you can also use the hammer gently tapping the back of the electric knife, so you can turn on the laptop power adapter
Q:Inverter ACS355 If the speed is outside the allowable range, how to set the limit value
1. Set 2002 MAXIMUM SPEED Defines the maximum permissible speed.
Q:What is the difference between AC and DC frequency converters?
Advantages and disadvantages: Advantages: inverter air conditioner with variable frequency power supply, inverter compressor, electronic expansion valve and microcomputer technology, the organic combination of air conditioning to further improve the performance, the use of room temperature fluctuations, better comfort, the better Power supply voltage fluctuation is not sensitive, the compressor starts, the general non-stop, cooling capacity in the range of 35% to 117% change, to avoid the frequent open air-conditioning, to extend the life of the compressor, while efficient, Features. Disadvantages: the price is more expensive, compared with ordinary air conditioning, about 1/3 to 1/4 of the price, at the same time, because the inverter air conditioner control system and frequency conversion system is more complex, higher requirements for components, compared to ordinary air conditioning , Inverter air conditioner failure rate is high, and, due to the use of frequency conversion technology, at the same time, will produce harmonic pollution. What is DC inverter air conditioner? DC inverter air conditioner is relative to the AC inverter air conditioner, in fact, its name is not correct, because the DC and no frequency, it is by changing the DC voltage to adjust the compressor speed, thus changing the air conditioning cooling capacity, It can only be said to be a DC variable speed air conditioning, not strictly in the sense of inverter air conditioner.
Q:What is the working principle of high voltage electrodes and frequency converters?
The general high and low methods are used in low-power high-voltage motor to do with energy-saving energy.
Low-high-mode high-voltage inverter is controlled by a low-voltage inverter, the voltage directly to the motor with a step-up transformer voltage. Low-high mode is also used in low-power high-voltage motor to do with energy-saving energy.
Q:ASUS and dell notebook power adapter can be universal?
One, not necessarily interchangeable. Need to compare the two adapter specifications to determine:
1, the books power adapter, there are 90W and 60W of the other, some products output voltage 19V and 14V of the other. "General" conditions, as long as the output power of the adapter is the same, the output voltage is the same (current may not consider), that is, their specifications are the same, you can directly substitute.
2, however, some foreign imports of products using 110V AC products, be careful to see clearly.
3, before the use of replacement, pay attention to observe if connected to the books of the power plug specifications are different, you can not directly insert. An interface adapter can be purchased. Can also be bad adapter plug, cut into the replacement adapter;
Second, for example:
1, LITEON OEM products, parameters: input AC 100 ~ 240V 1.5A, output DC 19V3.42A. Rated output power 60W;
2, ASUS books supporting products, parameters: AC 100 ~ 240V 1.5A, output DC 19V 4.74A. Rated output power 90W.
Q:What is the maximum speed adjustable for a 4-stage motor with a rated frequency of 50Hz / 60Hz?
Motor speed and frequency of the formula
N = 60f / p
In the above formula
N - the speed of the motor (r / min);
60 - per minute (seconds);
F - power frequency (Hirsch);
P - pole pairs of motor rotating magnetic fields.
China provides the standard power frequency f = 50 weeks / second, so the rotation of the magnetic field of the size of the theoretical diameter only with the magnetic pole. The number of pole pairs is large, and the rotational speed of the rotating magnetic field is low.
Q:How to choose a power adapter
There are several principles for replacing the power adapter.
1. The voltage is the same or similar. Your computer's nominal input voltage is 16V, and the following adapter's rated output voltage is 20V, the difference is large, can not be replaced, may damage the computer.
2. The plug has the same polarity. Your notebook marked on the polarity of the mark is inside and outside the negative, that the adapter I really can not see what is the polarity of the label, you take a closer look if the symbols and notes on the notebook is not the same, it is absolutely not.
3. The rated output current of the power adapter can not be less than the rated input current of the computer. Your computer marked the maximum input current is 3.36A, then you buy the power adapter when you want to buy the output current greater than or equal to 3.36A, the bigger the better, but the greater the output current that the greater the rated power, too much Waste, and very cumbersome, generally slightly larger than on the line, leaving some margin.