Frequency Inverter VFD

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Product Description:


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


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:How does the frequency converter change the voltage and change the speed of the motor?
Change the motor frequency converter, V/F control mode in changing the motor frequency at the same time according to the proportion of changing the voltage of the motor, the speed and frequency of the motor is proportional to the relationship, so it changes the motor speed.
Q:What are the differences between the two quadrant and the four quadrant of the inverter?
For a motor alone, the so-called four quadrant refers to its operating mechanical characteristics curve, on the mathematical axis of the four quadrants can run. The first quadrant is in the positive electric state, the second quadrant feedback braking state, the third quadrant reversing electric state, and the fourth quadrant reverse braking state. A frequency converter that makes the motor work in the four quadrant is called the four quadrant converter.
Q:What's the difference between universal inverter and fan pump converter?
In practice, the production machinery is often divided into three types: constant torque load, constant power load and fan, pump load.Constant torque load:The load torque TL is independent of the speed n, and the TL remains constant or almost constant at any speed. For example, conveyor belts, mixers, extruders and other friction loads, as well as cranes, hoists and other potential loads are constant torque load.When the inverter drives the load with constant torque, the torque at low speed is large enough and has enough overload capacity. If it is necessary to operate at a low speed, the cooling capacity of the standard asynchronous motor should be taken into consideration, so as to avoid the excessive temperature rise of the motor.
Q:The difference between soft starter and converter
Soft start only in low voltage system, so called, high voltage motor is currently using more liquid resistance starter (cabinet), commonly known as "water resistance."". The function is almost the same, but the principle is different. The former is activated by thyristor controlled current limiting, and the latter is started by resistance voltage regulation and current limit.
Q:How can the interference caused by frequency converter be solved?
Shielded interference source: shielded interference source is an effective way to suppress interference. Usually the inverter itself with iron shielding, can not let the leaked electromagnetic interference, but the output line frequency converter is best to use steel shielding, in particular to an external signal (4~20mA signal output from the controller) control of inverter, the control signal line is as short as possible (usually less than 20m), and must use the shielded twisted pair and the main power line and the control line (AC380) and (AC220V) completely separated. In addition, the circuit of electronic sensitive equipment in the system also adopts shielded twisted pair, especially the pressure signal. All signal lines in the system must not be placed in the same pipe or slot as the main electrical line and control line. To make the shield effective, the shield must be grounded reliably.
Q:What is called vector converter?
The shaft is current excitation current, Q axis current is the torque current, it can bring the excitation current and torque current of AC motor control separately, make the AC motor and DC motor control with similar characteristics, is an ideal control theory of AC motor design, greatly improving the control performance of AC motor. But the control theory has not only applied in the AC asynchronous motor, DC inverter motor (BLDC, also is the permanent magnet synchronous motor) is widely used in the control theory.
Q:The frequency converter is in use suddenly the speed reduces, then the debugging is out of control, how to do?
The average DC voltage Ud=1.35U line =513V is calculated by the 380V line voltage. When the overvoltage occurs, the energy storage capacitor on the DC bus will be charged, and when the voltage rises to about 700V, due to different models, the converter will protect the voltage. There are two main causes of over voltage: over voltage and over voltage.
Q:How to check the frequency converter is there a problem?
UndervoltageThere is a problem with the power input circuit. It may be caused by serious overloading of the line or bad contact with the line. The letter "E" PMU display panel LCD screen SIEMENS 6SE70 series inverter, the inverter can not work, press the P button and to stop transmission are invalid, check the operation manual and the related introduction, in the external DC24V power supply, that is low voltage, solution, inverter working.
Q:Heating inverter commissioning steps
The no-load connection test of the frequency converter will connect the grounding terminal of the frequency converter to the ground 1. 2 the power input terminal of the frequency converter is connected to the power supply through the leakage protection switch. 3 check the frequency converter display window factory display is normal, if not correct, should reset, or request exchange. 4 familiar with the operation key of frequency converter. The inverter has run in general (RUN) and stop (STOP), programming (PROG), P (DATAPENTER), the data confirm the increased (UP, 3), reduce (DOWN, 6) and other key definitions of different inverter operation keys are basically the same. In addition, some inverters also monitor (MONITORPDISPLAY), reset (RESET), inch movement (JOG), shift (SHIFT) and other functional keys.
Q:What does the RUN key on the inverter mean? How do you use it?
In general, when selecting panel operations (when the panel of the inverter is the control source of the inverter), it is the meaning of the "running" button. Press it, the converter will run, turn or reverse

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