Deyan Electric is an established industrial electrical supplier serving European and American markets, and the General Purpose Variable Frequency Inverter Drive is one of its core LNC820‑series industrial drive units. Every unit goes through factory aging and load testing before shipment, following international IEC standards. Designed for asynchronous motor driving, it balances robust hardware performance, rich built‑in functions and competitive procurement cost, so system integrators, factory owners and machinery OEMs can deploy consistent frequency‑conversion solutions without over‑investing on premium specialized drives.
Core Operational Benefits
Many industrial buyers look past raw parameters and care about real‑world production improvements. This general‑purpose drive targets day‑to‑day equipment pain points including energy loss, trip faults and unstable running speed. Below are its most practical operational advantages:
1. Adaptive energy‑saving curves: Three selectable V/F profiles‑‑linear, multi‑point and square‑law‑‑allow matching for constant‑torque, centrifuge‑type and fan‑pump loads, cutting unnecessary motor excitation power under partial‑load conditions.
2. Smooth motor startup protection: Gradual frequency ramp‑up eliminates large inrush current from direct‑on‑line starting, lowering over‑current tripping risk and extending motor service life for long‑shift factories.
3. Comprehensive onboard protection suite: Over‑voltage, under‑voltage, over‑heat, output phase loss and motor short‑circuit detection safeguard both the inverter and connected motor against unexpected site grid fluctuation.
All these benefits combine to reduce unplanned downtime and trim monthly power expenditure, two key KPIs for plant‑floor decision‑makers evaluating the Drive.
Key Technical Profile
Powered by dedicated DSP control chip, the General Purpose Variable Frequency Inverter Drive supports wide‑range speed adjustment and fine process tuning. Specifications are unified across the whole power series for easier project configuration and spare‑part management.
1. Frequency handling: Output frequency spans 0‑500Hz; carrier frequency adjusts automatically between 0.8kHz‑12kHz to suppress motor acoustic noise under different loads.
2. Torque & overload rating: G‑type heavy‑duty version delivers 150 % rated current lasting 60 seconds; P‑type fan‑pump light‑duty reaches 130 % rated current for 60 seconds, matching different load cycles.
3. Control accuracy: Frequency resolution reaches 0.01Hz, speed‑stability accuracy ±1 %, speed‑regulation ratio up to 1:100 for fine speed trimming on processing machinery.
4. Built‑in algorithm resources: Embedded PID, multi‑step speed program, jog operation and S‑curve acceleration / deceleration are available without adding external PLC hardware for simple automation tasks.
These technical capabilities mean users can deploy this drive for both simple fan‑pump retrofits and moderately complex automated machine workflows with fewer additional components.
Typical Application Coverage
Versatile function sets make this drive fit cross‑industry deployment. It works for retrofitting existing fixed‑speed motors as well as for new OEM machine builds. Major application categories are listed below:
1. Light‑industrial processing: Textile equipment, paper‑making machines, wire‑drawing and packaging lines benefit from stable continuous‑run speed control to keep product quality consistent.
2. HVAC and fluid handling: Industrial fans, centrifugal pumps and water supply systems gain notable energy‑saving gains when using square‑law V/F curve mode for variable‑flow demands.
3. Automated production apparatus: Food‑processing machinery, general‑purpose machine‑tools and conveyor systems use multi‑speed and simple‑PLC functions for sequential production cycles.
Whether for end‑user plant renovation or machinery‑manufacturer OEM integration, the Drive can cover most standard asynchronous‑motor variable‑speed requirements.
Quality & Factory Validation
As a supplier exporting to Europe and America, Deyan Electric applies strict in‑house validation workflows before any unit leaves production lines. Quality control covers hardware assembly, function verification and environmental simulation screening.
1. Pre‑delivery testing: Every unit undergoes aging run‑in, full‑load simulation and every protection item check to catch assembly or component defects at factory side.
2. Standard compliance: Product design follows mainstream international standards, supporting market access requirements for overseas project tenders and import customs clearance.
3. Environmental adaptability screening: Performance is verified for temperature, humidity and vibration limits stated in official datasheet, reducing early‑failure risk under typical industrial site conditions.
Factory‑level quality validation gives system integrators and bulk buyers confidence when placing repeated orders for the General Purpose Variable Frequency Inverter Drive for multi‑site projects.
Procurement & After‑sales
Global industrial purchasers need more than hardware; they require clear procurement terms and accessible technical support for commissioning and post‑delivery troubleshooting.
1. Bulk‑order support: Flexible batch ordering covers small sample trial as well as large‑volume project procurement; power models from 0.75 kW up to 400 kW are in serial production.
2. Commissioning resources: Parameter documentation and operation guidance help engineering teams finish startup; remote technical consultation is available for configuration problems.
3. Warranty and spare‑part supply: Standard factory warranty applies, with accessible spare‑part stock to shorten equipment downtime in case of component replacement needs.
Complete procurement‑to‑support workflow lowers overall project risk for buyers selecting this series frequency‑conversion drive.
FAQ
Q: Can this drive work with standard three‑phase asynchronous motors?
A: Yes, the LNC820‑series unit is designed to drive common asynchronous motors. Pay attention to matching inverter rated power with motor power; for heavy‑impact load scenarios, select G‑type heavy‑duty model instead of P‑type fan‑pump model to secure sufficient overload margin.
Q: What does G‑type and P‑type model code mean?
A: G‑type stands for heavy‑duty constant‑torque application with higher overload capability, used for machine‑tool, textile and transmission loads. P‑type targets light‑duty fan‑pump square‑law loads. When ordering, select model suffix matching your actual load profile to avoid derating or premature protection trips.
Q: Is RS485 communication included as standard configuration?
A: RS485 communication interface comes as standard configuration for the series, supporting parameter read‑write and operation command control over serial bus. 22 kW and below power units also integrate built‑in braking unit as standard.
Q: What environmental limits should be observed for installation location?
A: Install indoors, avoid direct sunlight, dust, corrosive gas, oil mist and water dripping. Altitude should stay under 1000 m; ambient working temperature ‑10 ℃ ~ +40 ℃. If site temperature reaches 40‑50 ℃, you must implement power derating for the inverter.
Nameplate Reference
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MODEL:
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LNC820‑4T0040GB/4T0055PB
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POWER:
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4KW 9A/5.5KW 13A
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INPUT:
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3PH AC380V 50HZ/60HZ
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OUTPUT:
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3PH AC0V‑380V 0HZ‑500HZ
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S.N:
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Barcode
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Full Technical Specification
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Item
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Specification
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Basic functions
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Output frequency
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0‑500Hz
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Carrier frequency
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0.8kHz~12kHz the carrier frequency can be automatically adjusted according to the load characteristics
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Frequency resolution
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0.01Hz
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Control mode
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V/F control
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Torque characteristics
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With torque compensation and slip compensation,starting torque: G‑type machine 0.5Hz/150%,P‑type machine 0.5Hz/100%
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Torque boost
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Automatic torque boost;Manual torque boost 0.1%~30.0%
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Overload capacity
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G‑type machine:150%of rated output current for 60S P‑type machine:130%of rated output current for 60S
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Speed regulation range
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1:100
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Speed stability accuracy
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±1%
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Automatic voltage regulation(AVR)
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When the grid voltage changes,it can automatically maintain a constant output voltage
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Over‑voltage and over‑current stall control
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Automatically limits the current and voltage during operation to prevent frequent over‑current and over‑voltage tripping
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Fast current‑limiting function
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Minimizes over‑current faults to protect the normal operation of the frequency converter
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V/F curve
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Four modes:linear type;multi‑point type;complete V/f separation;incomplete V/f separation
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Acceleration and deceleration curves
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Linear or S‑curve acceleration and deceleration modes;four acceleration and deceleration times; acceleration and deceleration time range:0.1~6500.0s
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DC braking
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DC braking frequency:0.00Hz～maximum frequency,braking time:0.0s～36.0s, braking action current value:0.0%~100.0%
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Simple PLC,multi‑ speed operation
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Jog frequency range:0.00Hz～50Hz;jog acceleration and deceleration time:0.0s～6500.0s
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Jog control
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Up to 16‑speed operation can be achieved through the built‑in PLC or control terminals
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Built‑in PID
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It can easily implement a process‑control closed‑loop control system
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Operating characteristics
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Operating command channel
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Three channels:given by the operation panel,given by the control terminals,given by the serial communication port.It can be switched in various ways
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Frequency source
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Ten frequency sources:given by panel knob,given by operation panel,given by analog voltage, given by analog current,given by RS485 communication,multi‑speed,PID,simple PLC, which can be switched in various ways
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Auxiliary frequency source
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Ten auxiliary frequency sources.It can flexibly achieve auxiliary frequency fine‑tuning and frequency synthesis
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Input terminals
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Six digital input terminals,one of which can be used as a high‑speed pulse input. Two analog input channels,AI1:input range 0～+10V,AI2:input range 0~+10V/0‑20mA
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Display and keyboard operation
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Output terminals
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One high‑speed pulse output terminal,outputting square‑wave signals from 0kHz～50kHz which can realize the output of physical quantities such as set frequency and output frequency. One digital output terminal. One relay output terminal. Two analog output terminals,AO2:0V~10V, AO1:0V~10V/0‑20mA,which can indicate output frequency/current/voltage/frequency command/ speed/power factor signal output
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LED display
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It is equipped with 8 function keys,a 5‑digit 7‑segment LED,and 5 status LED indicators. It can perform forward rotation,reverse rotation,reset,stop,jog,as well as parameter setting and display
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Protection characteristics
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Protection function
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Motor short‑circuit detection upon power‑on,output phase‑loss protection,over‑current protection,over‑voltage protection,under‑voltage protection,over‑heat protection,overload protection,etc
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Environment
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Application place
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Indoors,not directly exposed to sunlight,free from dust,corrosive gases,flammable gases,oil mist, water vapor,dripping water or salt,etc
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Altitude
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Less than 1000m
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Ambient temperature
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‑10℃~+40℃(When the ambient temperature is between 40℃~50℃,derating operation is required)
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Humidity
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Less than 95%RH,without water droplet condensation
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Vibration
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Less than 5.9m/s²(0.6g)
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Storage temperature
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‑20℃~+60℃
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