Frequency Inverter Single-phase 380V class 215KW

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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.





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








Input voltage


Input frequency



Output voltage

0~input voltage

Output frequency


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


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


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


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


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)


Less than 0.5g

Storage temperature


Installation type

Wall-mounted type, floor cabinet type

Cooling mode

Air-forced cooling



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Q:When the inverter is running at full 50HZ, the output voltage decreases and the output current becomes smaller. What is the reason?
If the load of the motor is increased, the slip S is increased, the electromotive force of the motor is decreased, and the electric current of the motor will become larger. That is to say, when the motor is running in the overclocking stage, the load of the motor is light, the current will become smaller, and the current will not be smaller if the load is negative. Didn't I make myself clear?
Q:What role does input and output reactor play?
The working principle of frequency converter:Normally, a device that changes the alternating current of voltage and frequency to a voltage or frequency variable alternating current is called a frequency converter". The device must first convert three-phase or single-phase AC to direct current (DC). Then the direct current (DC) is converted to three-phase or single-phase alternating current (AC). The frequency converter changes the output frequency and voltage at the same time, that is to change the N0 on the motor running curve, so that the motor running curve is parallel and downward. Therefore, the frequency converter can make the motor start with a smaller starting current to obtain a larger starting torque, that is, the frequency converter can start heavy load, and the inverter has the basic functions of voltage regulation, frequency modulation, voltage regulation, speed regulation and other basic functions
Q:What's the frequency converter for? What does it look like?
AC motor stepless speed regulation can save energy in some occasionsThe appearance of the basic manufacturers are one of the same
Q:What does the brake unit on the inverter mean?
When the motor is fast stopping, the motor will feedback the energy to the converter, causing the DC bus voltage to rise or even damage the IGBT. Therefore, it is necessary to use the braking unit to save the part of the energy to protect the converter.Inverter braking a lot, can refer to:
Q:What are the modes of operation of a frequency converter?
Frequency converter with motor no-load operation, 11 set motor power and pole number, to consider the work current of the converter. 21 set the maximum output frequency, frequency and torque characteristics of the inverter. VPf types include items such as maximum frequency, basic frequency and torque type. The highest frequency is the highest frequency that the inverter motor system can operate, because the highest frequency of the inverter itself may be higher, when the highest frequency allowed by the motor is lower than the frequency conversion
Q:Can the motor with frequency converter directly wave the insulation?
Frequency converter with motor, is a high-power three stage tube, C, E in the output, you directly shake insulation, measuring the pressure of the transistor. So you can't measure it.
Q:What is the difference between inverter energy consumption braking and motor energy consumption braking?
Energy consumption braking is to rely solely on the motor to consume kinetic energy to achieve the purpose of parking. Therefore, the braking effect and accuracy are not ideal. In some occasions requiring short braking time and good braking effect, this brake is not normally used. Such as lifting machinery, its operation is characterized by low motor speed, frequent start, stop and reverse, and drag the weight of the operation. In order to achieve accurate and flexible control, the motor is often in a state of braking, and requires large braking torque. The energy consumption brake can not meet the above requirements. Therefore, lifting machinery generally adopts reverse braking, and requires mechanical braking, in case the weight is slipped during running or losing power.
Q:Knowledge, principle and operation method of frequency converter.
The history of the principle of frequency converter:Frequency conversion technology is born with the need of AC motor stepless speed regulation. After 1960s, the power electronic devices through SCR (SCR), GTO (gate turn off thyristor (BJT), bipolar power transistor), MOSFET (metal oxide semiconductor field effect transistor), SIT (static induction transistor), SITH (static induction thyristor (MGT), MOS control MCT (MOS) transistor, thyristor controlled), IGBT (insulated gate bipolar transistor), HVIGBT (high voltage insulated gate bipolar transistor) device to update the development process, to promote the continuous development of power electronics technology (note that because of this, so the inverter is in this background). The beginning of 1970s, PWM VVVF (PWMVVVF) control has aroused great attention. In 1980s, PWM mode optimization, as the core of frequency conversion technology, attracted people's interest and obtained many optimization models, among which the saddle wave PWM model was the best. Since the latter half of the 1980s, the VVVF inverters in developed countries such as the United States, Japan, Germany, Britain and other developed countries have already been put into the market and have been widely used. As to understand the principles of various types of frequency converter, you might as well look at the four changes in the frequency control mode from the simple to the complex.
Q:What is called vector converter?
Vectors and vectors are mathematical methods of vector (vector) analysis, both of which are of the same concept
Q:Does anyone know how to solve the problem of frequency converter interference?
Solutions to interference caused by electromagnetic radiation:1. access reactor2., the correct grounding - grounding wire as close as possible to the frequency converter, the principle of power lines, frequency converter for the ground wire must be usedThe ground wire is separated from the other equipment, and the earthing of all the equipment must be avoided before grounding.The earthing terminal of the frequency converter can not be connected with the zero line.3. access filter.4. reduce carrier frequency.

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