SHANDONG LIANCHUANG GAOKE AUTOMATION CO.,LTD.

SHANDONG LIANCHUANG GAOKE AUTOMATION CO.,LTD.

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PRODUCTS

LIANCHUANG GAOKE AUTOMATION

OEM equipment manufacturers can customize the frequency converters that you prefer and install them on your products.

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Medium Voltage Cabinet Model LG300A

3PH 690V±15% 45-1200KW

Category:

General Heavy Duty model

690V model

Cabinet model

Inquiry

Keywords:

General Heavy Duty model

690V model

Cabinet model

Products Detail

Features:

690V Input Voltage

Imported IGBT Infineon Module, with strong carrying capacity and good stability

Powerful current vector control performance, low noise and excellent energy-saving effect

Standard built-in reactor, vertical cabinet design, independent air duct heat dissipation

Humanized design, intelligent control, LED panel dual display, clear and intuitive

Perfect multiple protection measures for over current, over voltage and lack of voltage

RS485 serial communication interface, supporting MODBUS international standard communication protocol

Application:

Textile machinery,Roots Blower ,Plastic

machinery , Petroleum , Food machinery, Paper making

Technical Specification of LG300A Series:

Item	Technical Index	Specification
Basic function	Maximum frequency	Vector control: 0~500 Hz;V/F control: 0~- 2000 Hz
	Carrier frequency	0.5kHz~ 16kHz The carrier frequency can be automatically adjusted according to the load characteristics
	Input Tonnage Resolution	Digital setting: 0.01Hz; Analog setting: maximum frequency × 0.025%
	Control mode	Open-loop vector control (SVC)/Closed-loop vector control (FVC) / V/F control
	Starting torque	Type G: 0.25 Hz/ 150% (SVC); 0Hz/ 180%（FVC) ;Type P: 0.5Hz/ 100%
	Speed range	1:100(SVC) 1:1000(FVC)
	Steady speed accuracy	±0.5% (SVC) ±0.02% (FVC)
	Torque control accuracy	±5% (FVC)
	Overload capacity	G type machine: 150% rated current for 60s; 180% rated current for 3s. P-type machine: 120% rated current 60s: 150% rated current 3s.
	Torque increase	Automatic torque lifting; Manual torque increase 0.1%~30.0%
	V/F curve	Three ways: linear type; Multi-point type; Nth power V/F curve ( 1.2 power, 1.4 power, 1.6 power, 1.8 power, 2 power)
	V/F separation	Two methods: full separation and half separation
	Acceleration and deceleration	Linear or S-curve acceleration and deceleration mode
	DC braking	DC braking frequency: 0.00Hz~maximum frequency;Braking time: 0.0s~36.0s Braking action current value: 0.0%~ 100.0%
	Inching control	Jog frequency range: 0.00Hz~50.00Hz;Jog acceleration and deceleration time 0. 0s~6500.0 s
	Simple PLCmulti-stage speed operation	Up to 16 segments of speed operation can be realized through built-in PLC or control terminal
	Built-in PID	Convenient to realize processing closed-loop control system
	Automatic voltage regulation	When the grid voltage changes, it can automatically keep the output voltage to be constant
	Overvoltage and overcurrent	Automatically limit of current and voltage during operation to prevent frequent over-voltage tripping
	Fast current limiting function	Minimize over current fault and protect normal operation of frequency converter
	Torque limitation and control	The "excavator" feature automatically limits the torque during operation to prevent frequent over current tripping; Closed-loop vector mode can realize torque control
Personalizat ion function	Excellent performance	Asynchronous motor and synchronous motor control with high-performance current vector control
	Instantaneous stop	In case of transient power failure, the load feedback energy compensates the voltage reduction to maintain the continuous operation of the converter for a short time
	Fast current limiting	Avoid frequent over current fault of frequency converter
	Virtual IO	Five groups of virtual DIDO can realize simple logic control
	Timing control	Timing control function: set the time range of 0.0Min~6500.0Min
	Multi-motor switching	Four sets of motor parameters can realize four motor switching control
	Multi-threaded bus support	Support field bus: RS-485
	Multiple encoder support	Support differential, open collector, UVW, resolver, sine and cosine encoders
	User programmable	Optional user programmable card can realize secondary development, and the programming mode is compatible with the PLC of Huichuan Company
	Powerful background software	Support converter parameter operation and virtual oscilloscope function. Graphical monitoring of internal state of frequency converter can be realized through virtual oscilloscope
Function	Command source	The operation panel / the control terminal / serial communication port . Pulse setting and serial port setting. It can be switched
	Frequency source	10 kinds of frequency sources: digital setting, analog voltage setting, analog current setting, pulse setting and serial port setting. It can be switched in many ways
	Auxiliary frequency source	10 auxiliary frequency sources. Flexible realization of auxiliary frequency fine tuning and frequency
	Input terminal	Standard:Six digital input terminals, one of which supports high-speed pulse input up to 100kHz 2 analog input terminals Support 0~ 10V voltage input or 4~20mA current input
	Output terminal	Standard:1 high-speed pulse output terminal (optional open collector type), supporting 0~ 100kHz square wave signal output 1 digital output terminal 2 relay output terminals 2 analog output terminals, supporting 0~20mA current output or 0~ 10V voltage output
Environment	Place of use	Indoor, free from direct sunlight, dust, corrosive gas, flammable gas, oil mist, water vapor, dripping water or salt, etc
	Altitude	Below 1000m
	Ambient temperature	- 10'C~+40C (ambient temperature is 40 。 C~50'C, please derate)
	Hmbient temperature	Less than 95% RH, no water condensation
	Vibration	Less than 5.9m/s3 (0.6g)
	Storage temperature	-20℃~+60℃

Dimensions of LG300A Series:

Standard	Power（KW）	H（mm）	W（mm）	D（mm）
LG300A-45G/55P	45/55	655	270	315
LG300A-55G/75P	55/75	655	270	315
LG300A-75G/90P	75/90	655	270	315
LG300A-90G/110P	90/110	745	325	350
LG300A-110G/132P	110/132	745	325	350
LG300A-132G/160P	132/160	830	380	335
LG300A-160G/200P	160/200	830	380	335
LG300A-200G/220P	200/220	1025	525	350
LG300A-220G/250P	220/250	1025	525	350
LG300A-250G/280P	250/280	1025	525	350
LG300A-280G/315P	280/315	1025	525	350
LG300A-315G/355P	315/355	1150	555	355
LG300A-355G/400P	355/400	1150	555	355
LG300A-400G/450P	400/450	1450	650	390
LG300A-450G/500P	450/500	1450	650	390
LG300A-500G/560P	500/560	1450	650	390
LG300A-560G/630P	560/630	1600	750	500
LG300A-630G/710P	630/710	1600	750	500
LG300A-710G/800P	710/800	1600	750	500
LG300A-800G/900P	800/900	1600	750	500
LG300A-900G/1000P	900/1000	1855	1000	800
LG300A-1000G/1100P	1000/1100	1855	1000	800
LG300A-1100G/1200P	1100/1200	1855	1000	800
LG300A-1200G/1300P	1200/1300	1855	1000	800

WE COMMITMENTS

1.Software engineers and hardware engineers will serve you together, to solve all your technical related issues on time.

2.Priority delivery to ensure timely delivery.

3.Market protection to ensure dealer rights.

4.OEM/ODM

5.Some consumable parts will be sent with the machines, to solve problem for customers timely.

OUR ADVANTAGES

1.With 20 years of production experience and advanced equipment, we are the largest VFD manufacturer in north of China, and we support for factory inspection at any time.

2.High-cost performance: competitive price, advanced technology, professional service.

3.One-stop production: from software program and design, to PCB board printing, assembly and testing, to metal shell production and heat sink production, etc. With all those processes under control, we can ensure the stable quality and lowest cost.

4.Strict quality control: five-steps inspection ensures that each machine is a top-quality product before leaving our factory: AOI inspection, single board (PCB) test, pre-test after assembly, aging test and whole machine test.

5.Except ISO9001 and CE approved, we also won multiple domestic awards, and we are one of the VFD manufacturers supported by the government.

6.Complete after-sales service system, 18-month warranty from product delivery.

7.We have run mature dealer-service business model with 50+ dealers in operation at home and abroad.

Performance Comparison: Our VFD vs. Leading Brands

Feature	Our Factory VFD	ABB / Siemens / Danfoss	Advantage for You
Price	Factory Direct: 30-50% Lower	Premium Brand Pricing	Significant Cost Savings
Power Range	0.75kW - 1000kW+	Similar	Same Flexibility
Efficiency	Up to 98%	Up to 98%	Comparable Performance
Overload Capacity	150% for 60s / 180% for 3s	Similar	Reliable in Demanding Apps
Control Technology	Sensorless Vector / Closed-Loop	Advanced Vector Control	Equivalent Precision
Energy Savings	30-50% Reduction	30-50% Reduction	Same ROI, Lower Initial Cost
Warranty	1-3 Years	1-3 Years	Longer Protection
Customization	OEM/ODM Available	Limited	Tailored to Your Needs
Delivery Time	7-15 Days	Longer Lead Times	Faster Project Start

As a direct manufacturer, we deliver high-performance VFDs with specifications matching top brands like ABB and Siemens, but at 30-50% lower cost. Enjoy the same energy efficiency and reliability without the premium price tag – maximizing your ROI and competitiveness.

Warranty Agreement

1.The warranty period of this product is 18 months (subject to the barcode information of the machine body). During the warranty period, under the normal use of the user manual, our company is responsible for free repair of the product sales failure or damage.

2.During the warranty period, certain maintenance costs will be charged for damage caused by the following reasons:

The machine is damaged due to errors in use and unauthorized repair and transformation;

Machine damage caused by fire, flood, abnormal voltage, other premature disasters and secondary disasters;

Hardware damage caused by artificial fall and transportation after purchase;

Machine damage caused by not operating according to the user manual provided by our company;

Faults and damages caused by obstacles outside the machine (such as external equipment factors);

In case of product failure or damage, please fill in the contents of the “Product Warranty Card” correctly and in detail.

The charge of maintenance costs shall be subject to the latest adjusted “Maintenance Price List” of our company.

This warranty card will not be reissued under normal circumstances. Please be sure to keep this card and show it to the maintenance personnel during warranty.

In case of any problem during the service, please contact our agent or our company in time.

The Company reserves the right to interpret this agreement.

Manual Download