Variable Frequency Inverter/VFD for fan and Water Pump

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10000 unit/month

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General Introduction


From the above, different voltage output, the quantity of power units is different, but the working theory is exactly identical. All power units receive the indicator from same central process controller. There is a phase difference in secondary windings of transformer which provide energy for power unit, in this way, most of the harmonics current caused by independent power unit will be eliminated, so the primary winding current is approximately sine wave, the harmonics current flowing into power grid are so few, even under the rated load, the harmonics contents is lower of 3%.

 

The power unit is AC-DC-AC structure, equivalent to a low-voltage power source inverter of 3-phase input single-phase output. The rectifier side is diode three-phase full bridge circuit and the IGBT inverter bridge can be controlled through sine PWM mode to output single-phase AC. All power units are fully identical in structure and electrical performance, very easy for maintenance and replacement.


Energy Saving Fields

  • Power Generation: Induced draft fan, forced draft fan, condensate pump, feed pump, primary air fan, secondary air fan, booster fan, circulating pump, mill fan, slurry pump etc

  • Cement: draft fan, high-temperature fan, air blower, dust collection fan, grinding machine etc.

  • Metallurgy: blast furnace blower, slurry pump, feed water pump, dust fan, compressor etc.

  • Petroleum&Chemical: Water injection pump, crude oil pump, Compressor, fan, circulation pump, etc

  • Urban water supply: Water delivery pump, water intake pump, water supply pump, sewage treatment industry, self-fractionating pump etc

  • Minerals & Mining: Mud pump, ventilation fan, belt conveyor, slurry pump etc
    Others: Loads such as fan, pump and compressor in pharmaceutical, paper making and wind tunnel test.

     

Patented automatic recovery technology

With real-time monitoring, the VFD system can identify the causes of power cell bypass, and automatically restarts once it detects the problems are fixed. It ensures equipment to operate continuously and stably when the bus power supply has instantaneous failure.

Our VFD’s ventilation system is centralized and vertical. It has significant advantage over the distribution type in terms of temperature field control, air flow distribution, and wind speed uniformity. Since the capacitor units are located at the ventilation ducts, it is estimated that the lifetime of capacitor can be doubled, and thus the overall system service time is prolonged with this cooling mechanism.

Variable Frequency Inverter/VFD for fan and Water Pump 

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Q:Inverter alarm a043, how is it
When a signal failure occurs, use the DTI board, if necessary, change P215. With P806 (Follow the parameter description) during operation can be converted to no encoder operation A043 is: n-actjump exceeds the allowable change speed of the speed encoder signal (P215) In addition, for the synchronous motor (P095 = 12): The motor speed is 2% higher than the inverter release time point. The inverter in the ready state can not exit. Check processing: Check if the cable is disconnected Check the tachometer to shield the ground Not only on the motor side but also on the inverter side The encoder cable does not allow disconnection Use only recommended encoders The encoder cable is not allowed to be laid with the power cable
Q:Who knows how the inverter is calculated?
The synchronous speed of the two-pole motor is 3000 rpm,
Q:Three-phase motor, quadrupole asynchronous motor to 15rpm, the inverter output how many volt voltage? The 4 V
The voltage does not change, but the frequency changes, about 0.5 Hz
Q:What is the common COM point of the PLC and the inverter? Is it positive?
Generally refers to the common, and most of the negative
Q:What is the number of parameters of the motor frequency of the Siemens inverter?
Siemens inverter motor pole number parameter code is r0313 motor pole pairs. Note that the number of pole pairs.
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:Laptop power adapter current is not the same alternative?
because the output power is not enough, will burn. Note the voltage polarity!
Q:The laptop power adapter is hot
My point of view: First: your laptop power supply in a small ventilation environment, resulting in poor heat dissipation, Second: the life of the power supply is 3-5 years, the gradual oxidation of electronic components and some of the aging components, resulting in no load and load a lot of power, Third: the battery close to each run, and then connected to the power, the power to the battery charger and notebook power supply, so the pressure is not hot strange.
Q:Does the inverter set the number of poles to match the number of poles of the motor?
Variable-frequency (VFD) is the application of frequency conversion technology and microelectronics technology, by changing the motor operating frequency mode to control the AC motor power control equipment. The inverter is mainly composed of rectifier (AC variable DC), filter, inverter (DC variable AC), brake unit, drive unit, detection unit micro-processing unit and so on.
Q:ABB frequency converter and the difference between domestic frequency converter
The objective lens is equivalent to the lens of the projector, the object is inverted through the objective lens, magnified real image. Eyepiece is equivalent to the ordinary magnifying glass, the real image through the eyepiece into a positive, magnified virtual image.

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