China Best Selling VFD Frequency Drive 3 phase 380V 15kw

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Product Description:

Specifications

1.220V Single Phase Variable Frequency Drive 2.2KW
2.Advanced control technology
3.Easy to operate

    220V Single  Phase Variable Frequency Drive 2.2KW

 

General

 

CNBM  frequency  inverter is a high-quality, multi-function,

low-noise variable frequency drive which is designed, developed and manufactured according to international standards.

It can meet different needs of industrial conditions.

The inverter applies advanced control technology of space voltage vector PWM, with functions of constant voltage control, power-off restart, dead zone compensation, automatic torque compensation, online modification parameter, high-speed impulse input, simple PLC and traverse.

 

 

Product Name:CMAX-VCG15/P18.5T3 ~ CMAX-VCG18.5/P22T3

 

Application

 

 

Textile: coarse spinner, spinning frame, wrap-knitting machine, loom, knitting machine, silk-spinning machine, etc.

 

Plastic: extruder, hauling machine, decorating machine, etc.

 

Pharmacy: mixer, roaster, etc.

 

Woodworking: engraving machine, sander, veneer peeling lathe, etc.

 

Papermaking: single type papermaking machine, etc.

 

Machine tool: non-core grinding machine, optical lens grinding machine, cutting mill, etc.

 

Printing: cloth-washing machine, dye vat, etc.

 

Cement: feeder, air blower, rotary furnace, mixer, crusher, etc

 

Fan and pump: kinds of fans, blowers and pumps

 

 

Specification

Item

Specification

Input

Input voltage

220/380V±15%

Input frequency

47~63Hz

Output

Output voltage

0~input voltage

Output frequency

0~600Hz

Peripheral interface characteristics

Programmable digital input

4 switch input, 1 high-speed impulse input

Programmable analog input

AI1: 0~10V input

AI2: 0~10V input or 0~20mA input,

Programmable open collector

output

2 Output

(3.7kW and above: 1 Open collector output)

Relay Output

1 Output (3.7kW and above: 2 Relay output)

Analog output

2 Output, one is 0~10V,

another is 0~20mA or 0~10V

Keypad

Display:5-digit 8-section LED (Red), 2 indicators; parameter setting: 8 keys (including multi-function hot key ), 1 potentiometer

Technical performance characteristics

Control mode

All digital space voltage vector SVPWM algorism

Overload capacity

G purpose: 150% rated current 60s

P purpose: 120% rated current 60s

Speed ratio

1: 100

Carrier frequency

1.0~10.0kHz

Torque compensation

Linear, multi-point, 1.3th power, 1.7th  power, 2.0th power reduced torque; Compensation voltage range: automatic compensation and manual compensation 0.1~10%

Automatic voltage adjustment

It can automatically maintain output voltage constant when grid voltage fluctuates.

Automatic current adjustment

When the current is over current limit, under clocking automatically limits output current.

Function characteristics

Frequency setting mode

Keypad digital analog input, keypad potentiometer, impulse frequency, communication, multi-step speed and simple PLC, PID setting and so on, switch-over of setting modes.

Simple PLC,

multi-step speed control

16-step speed control

Special function

Traverse control, length control, time control

QUICK/JOG key

User-defined multi-function hot key

Protection function

Over-current, Over voltage, under-voltage, over-heat, phase failure, over-load and motor over-load

Working condition

Installation site

Indoor, altitude of less than 1km, dust free, non-corrosive gases, no direct sunlight

Application environment

-10°C~+40°C, 20~90%RH (no dew)

Vibration

Less than 0.5g

Storage temperature

-25°C~+65°C

Installation type

Wall-mounted type, floor cabinet type

Cooling mode

Air-forced cooling

 

 

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Q:What is the main function of the frequency converter on the machine tools?
Where is the difference between soft starter and converter?
Q:Why does harmonic generator produce harmonic? What's his working principle?
Is the inverter harmonics in converter running, need to input power supply of high power diode rectifier (or transistor / inverter module) of inverter; in the inversion process, the high-order harmonic generation in the input / output circuit; inverter harmonic to the power supply system, load and his nearby electrical equipment interference.
Q:Can the frequency converter 7.5KW take the motor with 11KW?
Inverter 7.5KW can not take 11KW motor, so that may cause overload inverter.Usually, the frequency converter 7.5KW can take about 5KW motors.
Q:What are the differences between the two quadrant and the four quadrant of the inverter?
The four quadrant inverter can not only drag the motor forward and backward, but also convert the kinetic energy of the motor idle time into electrical energy and feed it back to the power grid. Cause the motor to operate in the generator. Often used in some promotional occasions.
Q:I would like to ask, the inverter in use in the grid is very high?
In the process of using frequency converter, the demand for voltage fluctuation of power grid is not high. It depends on what brand of transducer. As a result, most of the grid voltage can meet the requirements, except in rural or remote areas where voltage changes exceed their permissible values. In addition, the frequency converter on the power grid harmonics also have requirements, if the harmonic content of more than 20%, will lead to frequency converter misoperation, false alarm, more serious circumstances, will lead to inverter out of control, or damage. However, most of the current harmonics will not happen, unless a large number of individual factories use frequency converters, servo, intermediate frequency furnace, welding machine and other equipment.
Q:Knowledge, principle and operation method of frequency converter.
Summary of the working principle of frequency converter:Before the work principle of frequency converter is understood, it may be possible to see why the inverter is sacred first Inverter is the frequency power supply (50Hz or 60Hz) converted to various frequency AC power supply, in order to realize the motor speed change operation of equipment. The control circuit controls the main circuit of the rectifier circuit will be converted into AC DC, DC intermediate circuit of the rectifier output smoothing filter, inverter circuit to DC and then reverse into alternating current (and core control circuit: AC - DC - AC the process). And the frequency conversion technology should be born with the need of AC motor stepless speed regulation. The working principle of formula to express the words is: n = 60 f (1 s) /p (1) - N - speed asynchronous motor; F -- asynchronous motor frequency; s - motor slip; P - pole motor. By formula (1), the speed n is proportional to the frequency f. As long as the frequency of F can be changed, the speed of the motor can be changed. When the frequency f changes within the range of 0 to 50Hz, the speed range of the motor is very wide. Frequency converter is to change the frequency of motor power to achieve speed regulation, is an ideal high efficiency, high performance speed control means.
Q:What does a frequency converter do?
What is the difference between a voltage type and an electric current type?The main circuit of the inverter can be divided into two categories: voltage is DC voltage source converter for AC inverter, the DC circuit is the filter capacitor current is DC converter; current source for AC inverter, the DC circuit filter inductance stone.
Q:I would like to ask vector control of the frequency converter, how the motor does not turn. What parameters are set up
The general frequency converter adopting vector control mode can not only match the DC motor in the speed regulation range, but also can control the torque generated by the asynchronous motor. The vector control method is based on the parameter of controlled asynchronous motor accurately, some general inverter needs accurate input parameters of asynchronous motor when in use, some general inverter needs to use the speed sensor and the encoder. In view of the motor parameters may change, will affect the performance of inverter for motor, the model of vector control of induction motor parameter automatic detection, automatic identification, adaptive function has the general inverter, can automatically to motor parameter identification before with the function of the general inverter for normal operation in the asynchronous motor, and adjust the control related parameters in the algorithm according to the identification results, thus effectively to ordinary asynchronous motor vector control.
Q:Heating inverter commissioning steps
And carry on the test run 1. manual operation of the frequency converter panel running stop, observe the motor running process and the frequency converter display window, to see if there is abnormal phenomenon. 2. if the P is started and the over-current protection is stopped in the motor, the acceleration P deceleration time should be reset. The acceleration of the motor during acceleration and deceleration depends on the acceleration torque, while the frequency change rate of the inverter during the start and braking is set by the user. If the inertia of motor or motor load change, speed or deceleration rate according to frequency change preset when possible acceleration torque is not enough, resulting in motor stall, motor speed and the inverter output frequency coordination, thus causing overcurrent or overvoltage. Therefore, it is necessary to set acceleration and deceleration time according to the inertia and load of the motor, so that the frequency change rate of the converter can be coordinated with the speed change rate of the motor.
Q:What's the use of switching frequency of converter?
By adjusting the switching frequency, system noise can be minimized, waveform smoothing is the best, and interference is minimal. Because the frequency converter mostly adopts the form of PWM modulation to carry out the frequency converter. That is, the output voltage of the inverter is actually a series of pulses, and the pulse widths and intervals are not equal. The size depends on the intersection point of modulation wave and carrier, that is, the switching frequency. The higher the switching frequency, the more the number of pulses in a cycle, the better the smoothness of the current waveform, but the interference to other devices is also greater. The lower the carrier frequency or the bad set, the motor will make unpleasant noise.

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