China VFD Frequency Drive 3 phase 220V 380V

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1 pc

Supply Capability:: 100000 pc/month

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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.

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	Input frequency	47~63Hz
Output	Output voltage	0~input voltage
Output	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, 1.7^th power, 2.0^th 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

Q:How does frequency converter realize variable frequency speed regulation?: V=60f/nvMotor speed fFrequency nMotor poles without frequency converter to change the motor speed, only by changing the pole of the motor to achieve, frequency is 50HZ; through the inverter to change the motor speed is running frequency, no need to replace the motor can realize the speed control. The principle of speed regulation is the formula above.

Q:What do you mean by the capacity of the inverter and the capacity of the motor?: Because the motor consumes active power and consumes reactive power, and the reactive power is also occupied, the motor with 70KW can only be usedThe power is known to everyone

Q:Check the fault information is the power supply voltage instability, but other inverters are running well, what is the matter? Will there be any other parameters are not set correctly, thank you!: This example is obvious, due to undervoltage, to find the problem of power, the first to exclude external problems, from the inverter inside to find the reasons.

Q:How to choose frequency converter?: Frequency converter (Variable-frequency, Drive, VFD) is the application of frequency conversion technology and microelectronics technology, by changing the power supply frequency of the motor to control AC motor power control equipment. The frequency converter is mainly composed of rectifier (AC DC converter), filter, inverter (DC AC converter), brake unit, drive unit, detection unit, micro processing unit and so on.

Q:What does "frequency" in household appliances mean?: The technology of frequency conversion technology called frequency conversion technology and home appliances in 1970s AC control by changing the frequency of the AC current, household appliances gradually began to appear frequency, electromagnetic cooking device, inverter lighting apparatus, inverter air conditioner, microwave frequency, variable frequency refrigerator, IH (induction heating cooker), inverter washing machine etc.. In the latter half of 1990s, household appliances relied on frequency conversion technology, mainly aiming at high function and power saving. For example, with high speed, high output, good control performance, small light weight, large capacity, high comfort, long life, safe and reliable, mute, power saving and so on.

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:What is the main function of the frequency converter on the machine tools?: The following example to three inverter in the application of the note for example!CNC machine tool is a kind of flexible and efficient automatic machine tool. It can solve the complicated, precise and small batch processing problem. It is very important to improve the machining accuracy and efficiency of CNC machine tools by rationally controlling the spindle of NC machine tools.

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, generally single-phase is allowed to + 20% fluctuations, three-phase is allowed to + 15% fluctuations.Frequency converter is the application of frequency conversion technology and micro electronics technology, by changing the power supply frequency of the motor to control AC motor power control equipment. The frequency converter is mainly composed of rectifier (AC DC converter), filter, inverter (DC AC converter), brake unit, drive unit, detection unit, micro processing unit and so on. Inverter by internal IGBT drive voltage and frequency off to adjust the output power, the power supply voltage required to provide according to the actual needs of the motor, so as to achieve the purpose of speed, energy saving, in addition, there are a lot of protection drive, such as over-current, over-voltage, overload protection and so on. With the continuous improvement of the degree of industrial automation, inverter has also been widely used.

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:Frequency converter OC alarm, what's the matter?: Description of the OC fault in the inverter manual, following several explanations: the load side short-circuit current greater than OC, run jump failure is two times; the output of the inverter module circuit; current transducer; overload; acceleration and deceleration time is too shortEtc.. Some models do not use OC to mark such faults. They are explained by load side short circuit, frequency converter overload, serious ground fault and so on. This is of course the alias of OC fault.

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