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Variable Frequency Drive LC640 Manufacturer & Supplier

Lcgk is dedicated to the design and manufacture of sophisticated Variable Frequency Drives, used to control electric motors in a wide variety of industrial and energy saving applications.

● Original Manufacturer with Competitive Price
● 11+ Years of VFD Knowledge and Experience
● ISO / CE Manufacturing Standards

720-Series-VFD (1)
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VFD-LC640 Offered

The SD720 series VFD is a general-purpose vector VFD developed for various fields, including traditional agriculture, industry, and manufacturing. It is widely applicable in industries such as fans, pumps, printing and packaging, power materials, metallurgy, chemicals, and municipal fire protection. This series of VFDs features outstanding performance, rich functionalities, compact structure, simple operation, safety and reliability, and excellent adaptability to different environments.

Can't Find Ideal VFD (Variable Frequency Drive) For Your Industry?

We provide custom solutions to all our customers and offer professional advice that you can take advantage of.
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VFD-LC640 Features

1.It features a completely sealed cooling air duct, providing strong environment resistance and excellent heat dissipation performance
2.It is equipped with functions such as braking, RS485 communication, and temperature protection.
3.It features current vector control algorithm, enabling high starting torque and stable low torque output
4.It incorporates a wide range of industry-specific application software functions, making it easy to meet various on-site control requirements.
5.It has comprehensive protection functions, including output phase loss protection, overcurrent protection, overvoltage protection, overload protection, and over-temperature protection.
6.It includes three control modes such as IV/F control, SVC open-loop vector control and FVC closed-loop vector control. It provides high torque output and strong ability for loaded start-up.
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VFD-LC640 Functional Parameters

Basic Functions   Output Frequency Low frequency mode：0.00Hz~500.00Hz;High frequency mode：0.0Hz~3200.0Hz
  Carrier Frequency 0.8-16KHz
  Frequency Setting Resolution Analog setting: 0.025% of the highest frequency; Digital setting: 0.01Hz
  Control Modes V/F control, open-loop vector control (SVC), closed-loop vector control (FVC)
  Stable Speed Accuracy ±0.5% of maximum speed (SVC); ±0.02% of maximum speed (FVC)
  Overload Capacity: 110% continuous; 150% for 1 minute
  V/F Curves Linear, Multi-point, V/F Separation, and V/F Semi-separation, a total of 4 types
  Acceleration/Deceleration Curves Linear or S-curve Acceleration/Deceleration modes; 4 acceleration and deceleration times, ranging from 0.1s to 6500.0s
  DC Braking DC braking frequency: 0.00Hz to maximum frequency; DC braking current: 0.0% to 100.0%; DC braking time: 0.0s to 100.0s
  Jog control Jog frequency range: 0.00Hz to maximum frequency; Jog acceleration/deceleration time: 0.1s to 6500.0s
  Simple PLC and Multi-segment Speed Running Built-in PLC function with support for up to 16 segments of speed running
  Built-in PID Capable of implementing closed-loop control system for process control
  Motor Parameter Self-tuning Static or rotational identification
  Overvoltage, Overcurrent, and Stall Control Automatically limits current and voltage to prevent frequent overcurrent, overvoltage, and trips
  Wave-by-wave Current Limiting Function Minimizes overcurrent faults and protects the inverter for normal operation
  Communication Function Standard RS485 communication interface
  Braking Function Available
Special Functions   Outstanding Performance SVC open-loop vector control, strong low-frequency loaded capability
  PID Control Built-in PID controller
  Automatic Voltage Regulation (AVR) Select voltage regulation or non-voltage regulation control as needed
  Low Noise Operation Carrier frequency continuously adjustable from 0.8 to 16KHz.
  Operating Functions Upper and lower frequency setting, frequency hopping operation, reverse operation limitation, frequency increment and decrement control, fault auto-recovery operation, and more.
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VFD-LC640 Specifications

SD720 Models Product Power Input Voltage/Frequency Output Voltage/Frequency Output Current (A) Product Dimensions (mm) Installation Dimensions (mm)
0.75S1-220V 0.75KW Single Phase 200V-240V 50Hz/60Hz Three Phases 200V-240V 50Hz/60Hz 4.00  166*109*146 99*154 M4
1.5S1-220V 1.5KW 7.00 
2.2S1-220V 2.2KW 9.60 
4.0S1-220V 4.0KW 17.00  249*143*181 130*237 M5
5.5S1-220V 5.5KW 25.00 
0.75S3-220V 0.75KW Three Phases 200V-240V 50Hz/60Hz Three Phases 200V-240V 50Hz/60Hz 4.00  166*109*146 99*154 M4
1.5S3-220V 1.5KW 7.00 
2.2S3-220V 2.2KW 9.60 
             
4.0S3-220V 4.0KW Three Phases 200V-240V 50Hz/60Hz Three Phases 200V-240V 50Hz/60Hz 17.00  249*143*181 130*237 M5
5.5S3-220V 5.5KW 25.00 
7.5S3-220V 7.5KW 32.00  324*209*192 188*305 M6
11S3-220V 11KW 45.00 
15S3-220V 15KW 60.00  408*288*209 264*388 M7
18.5S3-220V 18.5KW Three Phases 200V-240V 50Hz/60Hz Three Phases 200V-240V 50Hz/60Hz 75.00  408*288*209 264*388 M7
22S3-220V 22KW 80.00 
30S3-220V 30KW 110.00  510*320*248 235*485 M8
37S3-220V 37KW 152.00  655*377*267  240*635.5 M8
45S3-220V 45KW 176.00 
55S3-220V 55KW 210.00 
0.75G3-380V 0.75KW Three Phases 340V-440V  50Hz/60Hz Three Phases 340V-440V  50Hz/60Hz 2.10  166*109*146 99*154 M4
1.5G3-380V 1.5KW 3.80 
2.2G3-380V 2.2KW 5.10 
4.0G3-380V 4.0KW 9.00  215*131*174 119*201 M5
5.5G3-380V 5.5KW 13.00 
7.5G3-380V 7.5KW 17.00  249*143*181 130*237 M5
11.0G3-380V 11KW 25.00 
15.0G3-380V 15KW 32.00  324*209*192 188*305 M6
18.5G3-380V 18.5KW 37.00 
22.0G3-380V 22KW 45.00 
30.0G3-380V 30KW 60.00  408*288*209 264*388 M7
37.0G3-380V 37KW 75.00 
45.0G3-380V 45KW 90.00  510*320*248 235*485 M8
55.0G3-380V 55KW 110.00 
75.0G3-380V 75KW 152.00  655*377*267 240*635.5 M8
90.0G3-380V 90KW 176.00 
110.0G3-380V 110KW 210.00 
132.0G3-380V 132KW 253.00  750*495*325 320*730 M13
160.0G3-380V 160KW 304.00 
185.0G3-380V 185KW 340.00 
200.0G3-380V 200KW 380.00  1005*632*440 460*980 M13/16
220.0G3-380V 220KW 426.00 
250.0G3-380V 250KW 465.00 
280.0G3-380V 280KW 520.00 
315.0G3-380V 315KW 585.00  1250*800*450 600*1210 M13/16
355.0G3-380V 355KW 650.00 
400.0G3-380V 400KW 725.00 
450.0G3-380V 450KW 820.00 
500.0G3-380V 500KW 900.00 
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What Is A Variable Frequency Drive (VFD)?

PROFESSIONAL VFD SUPPLIER
A variable frequency drive (VFD) (also known as AC Drive, Inverter, Adjustable Frequency Drive, Adjustable Speed Drive, Variable Speed Drive Or Variable Frequency Variable Voltage Drive) is an electronic device used to control the speed and torque of an electric motor by varying the frequency and voltage supplied to it.

Variable Frequency Drives (VFD) consist of two main components a rectifier and an inverter. The rectifier converts AC power from the source into DC power, while the inverter transforms the DC power back into adjustable-frequency and voltage AC power, supplying it to the electric motor. This method of adjusting the power input allows the motor to operate at different speeds, making VFD widely used in various industrial applications.

Lcgk Series Variable Frequency Drives (VFD) play a crucial role in areas such as improving energy efficiency, reducing energy consumption, and enabling soft start and stop functionalities.
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VFD Working Principle

LCGK VFD is a power control equipment which adopts microelectronics technology and frequency conversion technology to change the working power frequency of motor for controlling AC motor.

Variable Frequency Drive converts incoming AC power to DC, inverts it back to AC with variable frequency and voltage, and supplies this controlled power to the motor. This control allows for precise regulation of motor speed, soft start and stop, and improved energy efficiency in various industrial applications.
VFD-Working-Principle (1)
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When To Use a VFD?

As a leading VFD AC drive manufacturer and supplier, we recommend using VFD in many situations, which are as follows

> To precisely control the speed of a manufacturing process based on specific parameters or conditions
> To provide a smooth start and vigilant acceleration to operating speed, preventing damage to the equipment being transported.
> To ensure energy savings, especially in areas where a load’s torque and power may vary.
>To make the process and quality enhancements in applications’ acceleration, monitoring, speed, temperature, tension, pressure, and torque.

Lcgk is a professional AC drives manufacturer and global supplier specialized in research, manufacturing, and trading high to low variable frequency drives. Armed with years of experience and a dedicated team, offering a wide array of VFD products.

Need VFD Drive? Reach Out to Us!
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Vfd manufacturer

We were established in 2014 and is located at Yanzhuang Industrial Zone, Laigang, Jinan, Shandong, China. It is a high-tech enterprise specialized in research, development, production, sales, and technical services of industrial inverters. The company currently has over 200 employees, over 50% of the workforce consists of professionals with expertise in variable frequency technology, contributing to its robust product research and development capabilities and technical support.

As a government-supported high-tech enterprise, we has obtained ISO9001:2015 quality management system certification & EU CE certification. With continuous research and development efforts, our products have evolved into 3 major series and 10+ specialized models...
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Top Three Frequency Converter Factories In China

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Production Capacity

LCGK VFD production base covers an area of over 30,000 square meters and is equipped with seven assembly lines for frequency inverters, three production lines for circuit boards and testing, three automated packaging lines, and three fully automated three-proof coating lines. Additionally, the base is equipped with automated devices such as automatic screw machines, automatic welding machines, and automatic unboxing machines. The SD320 assembly line, in particular, can produce one frequency inverter every 26 seconds, with a daily output of up to 3000 units. The advanced equipment ensures both the quality and productivity of our products.
  • Automated-production-line
    Automated production line
  • Fully-automatic-packaging-line
    Fully automatic packaging line
  • Automated-assembly-line
    Automated assembly line
  • Automated-inspection-line
    Automated inspection line
  • Automatic-Three-proof-Coating-Line
    Automatic Three-proof Coating Line
  • Automatic-unpacking
    Automatic unpacking
  • Three-proof-paint-coating-operation
    Three-proof paint coating operation
  • Automatic-screw-machine
    Automatic screw machine
  • Circuit-board-storage
    Circuit board storage
  • Constant-Temperature-and-Humidity-Warehouse
    Constant Temperature and Humidity Warehouse
  • Workshop-Raw-Material-Warehouse
    Workshop/Raw Material Warehouse
  • Finished-Goods-Warehouse
    Finished Goods Warehouse
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Cooperation Process

Inquiry.png" src="cloud/lrBprKnplqSRmjoknrkqjp/Send-your-Inquiry.png" alt="" title="">
Step.1
Send your Inquiry
Step.2
Quote price
Step.3
Negotiate price and lead time
Step.4
Sign the contract
Step.5
Payment and production
Step.6
Inspection
Step.7
Shipment

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Variable Frequency Drive FAQ

  • What does a variable frequency drive do?

    A variable frequency drive (VFD) is an electronic device used to control the speed and torque of an electric motor by varying the frequency and voltage supplied to it. it widely used in various applications, including HVAC systems, industrial machinery, pumps, fans, compressors, and more.

  • What is difference between VSD and VFD?

    Variable frequency drives (VFDs) and variable speed drives (VSDs) differ in that VFDs are AC drives only, while VSDs can be either AC drives or DC drives.  VFDs vary the speed of an AC motor by varying the frequency to the motor.  VSDs referring to DC motors, vary the speed by varying the voltage to the motor.The VFD is designed for the continuous operation of electrical motors.

  • What is the advantage to variable frequency drive motors?

    Energy efficiency, soft start and stop capabilities, enhanced process control, extended motor lifespan, adaptability to load changes, reduced electrical stress, cost savings, improved power factor, remote monitoring and control features.

  • What applications can I use a VFD?

    Pumps 
    Fans 
    Conveyors
    Compressors 
    Centrifuges 
    Mixers and Agitators 
    Machine Tools 
    Crushers and Grinders
    Extruders
    Hoists and Lifts 
    Escalators and Elevators
    Paper Machines 
    Textile Machinery 
    Electric Vehicles 
    Wastewater Treatment 

  • What are the different types of variable frequency drives?

    Single phase and three phase VFD
    A single-phase converter outputs three phases with a voltage of 220V from a single-phase 220V network.
    Three-phase VFDs are connected to three-phase 380V networks and output three phases at 380V as output voltage.
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