Frequency Inverter Single-phase 380V class 125KW

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Product Description:


1.380V Single Phase Variable Frequency Drive 125KW
2.Advanced control technology
3.Easy to operate




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





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:Frequency converter, fault, contact action
The frequency converter has 1-2 relay outputs, that is, digital output. By default, most of the output of the fault is the relay. The general definition of the 2 relays is defined as a running output and a fault output.
Q:What is the TTK converter produced?
TTK inverter is made in Zhejiang.TTK series general frequency converter is a high quality, multi-function and low-noise converter developed and produced independently by our own. Its rich functions fully meet the various needs;
Q:What's the use of switching frequency of converter?
Very important!The higher the switching frequency is, the smaller the harmonic is when the output waveform passes through the motor winding. The reason is that the higher the switching frequency is, the higher the harmonic frequency is, the higher the harmonic impedance is, and the smaller the harmonic current is. The smaller the harmonic current is, the smaller the harmonic loss is and the smaller the torque ripple is, the better the motor performance is.However, the higher the switching frequency, the greater the frequency converter loss, the lower the efficiency of the inverter, and more importantly, the greater the heat, the inverter may not be able to bear.In addition, according to the fundamental frequency of operation, the switching frequency is preferably an integer multiple of the fundamental frequency, and this multiple is an integer multiple of 3, which can effectively reduce the low harmonics which affect the motor greatly!
Q:Surface grinder can add frequency converter, what are the advantages and disadvantages?
SAJ inverter in the industry's specific applicationZhejiang Kanmen machine tool factory mainly produces all kinds of economic type simple NC machine, due to the higher failure rate of electromagnetic clutch speed regulation, realize VVVF system has more advantages, so using VVVF inverter to achieve the three. The details are as follows:
Q:Where is the frequency converter used?
In these industries, the use of small and medium power converters more, 220V/380V as its main model. Of course, the auxiliary facilities in these industries still have fans, pumps and inverters, but they don't use much.
Q:I would like to ask, the inverter in use in the grid is very high?
In the process of using inverter, grid voltage fluctuation requirements is not high, the general phase is to allow + 20% fluctuations, three-phase is allowed 15% fluctuations, so most of the grid voltage can be satisfied, unless it is in the countryside, or more remote areas, the voltage change will exceed the allowable value. 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:Where does the sound of the frequency converter come out?
The input is AC 50Hz sine wave output frequency variable, but still want to be sinusoidal. But due to various reasons such as the efficiency and control it is not directly output sine wave. It is the original inverter with high frequency sine wave modulation is Fang Bo, will be on the radio. As the modulation principle this is also called the square wave carrier. Between hundreds to thousands of HZ. In the range of our hearing. When it can be produced by mechanical vibration equipment such as reactors will sound when conducting ]. This is the voice we heard.The frequency of electromagnetic waves is high, that is, the corresponding mechanical vibration can occur, and it is also the frequency that the human ear can not hear, so it can not be heard
Q:What role does input and output reactor play?
The working principle of the reactor: the interference of capacitance and inductance in the circuit to the AC is called reactance. The inductor has the function of restraining the change of the current and the phase shift of the alternating current, and the winding static induction device with inductance is called a reactor. The dead are common reactor used in the power system with series reactor and shunt reactor. Series reactors are mainly used to restrict short circuit currents, and are connected in series with or parallel with capacitors in filters to limit the higher harmonics in the power grid. Reactors in the 220kV, 110kV, 35kV, and 10kV power grids are designed to absorb charging, capacitive, reactive, and reactive power in cable lines. The operating voltage can be adjusted by adjusting the number of shunt reactors.
Q:What does "EPCU" mean in a frequency converter?
But look at your inverter has also been used for some time, if not before, and now appear, it is estimated that the hardware is broken, and manufacturers communicate maintenance!
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:

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