No Transformer Needed! VFD-EL Covers Single/Three-Phase – Perfect for NA/EU/SEA Factories
VFD-EL series is a compact general-purpose sensorless vector inverter designed for small-scale industrial applications, covering power ranges from 0.4kW to 560kW with single-phase 220V and three-phase 380V voltage options. It integrates versatile control technologies including V/F and sensorless vector control, along with built-in PID feedback control and AVR function, delivering precise speed regulation and reliable load adaptation.
Product Features
- Control Technology: Supports V/F control and sensorless vector control, built-in PID feedback control and Automatic Voltage Regulation (AVR) function, enabling precise speed adjustment and load adaptation.
- Electrical Characteristics: Input frequency range 50/60Hz, output frequency 0.1~600Hz, supports multi-speed control (up to 15 preset speeds). Integrated EMI filter complies with electromagnetic compatibility standards such as EN61800-3, reducing interference to other equipment.
- Communication Interface: Equipped with RS-485 communication port (RJ-45) supporting Modbus RTU protocol; optional expansion modules for PROFIBUS, DeviceNet, LonWorks, etc.
- Protection Mechanisms: Integrates overcurrent, overvoltage, undervoltage, overheating, overload, and ground fault protection functions, complying with IEC/EN 61800-5-2 safety standards.
- Physical Characteristics: Compact design supports side-by-side installation and DIN rail mounting, saving space.
VFD-EL Series Model Specifications
| Model |
Power |
Input Voltage |
Input Phase |
Rated Current |
Overseas Application Notes |
| VFD002EL11A |
0.1875kW (0.25HP) |
115V |
Single-Phase |
1.6A |
Suitable for small DIY processing equipment and micro blowers in regions with 115V single-phase low-voltage power supply such as North America |
| VFD002EL21A |
0.1875kW (0.25HP) |
230V |
Single-Phase |
1.6A |
Adapted to 230V single-phase power supply scenarios in parts of Europe and Asia, ideal for small/micro pumps and mini conveyors |
| VFD004EL11A |
0.375kW (0.5HP) |
115V |
Single-Phase |
2.5A |
Designed for 115V single-phase circuits in North America, capable of driving small printing auxiliary equipment and small mixing devices |
| VFD004EL21A |
0.4kW (0.5HP) |
230V |
Single-Phase |
2.7A / 6.5A |
Compatible with most overseas 230V single-phase industrial scenarios, commonly used in small food packaging auxiliary equipment and small blowers |
| VFD007EL21A |
0.75kW (1HP) |
230V |
Single-Phase |
9.5A |
Suitable for small shop packaging machines and small conveying equipment in Europe, adapting to 230V single-phase power supply environments |
| VFD007EL11A |
0.75kW (1HP) |
115V |
Single-Phase |
4.2A |
Targeting low-voltage single-phase scenarios in North America, applicable to small DIY processing equipment and micro pumps |
| VFD004EL43A |
0.4kW (0.5HP) |
400V / 460V |
Three-Phase |
1.8A / 1.5A |
Adapted to 400V (Europe) and 460V (North America) three-phase circuits, suitable for small industrial pumps and blowers |
| VFD007EL43A |
0.75kW (1HP) |
400V |
Three-Phase |
3.2A |
Compatible with 400V three-phase power supply in Europe and parts of Southeast Asia, capable of driving small printing machinery and conveyors |
| VFD015EL43A |
1.5kW (2HP) |
400V |
Three-Phase |
4.3A |
Suitable for medium and small conveying equipment and industrial small blowers in Europe, adapting to 400V three-phase industrial power supply |
| VFD022EL21A |
2.2kW (3HP) |
230V |
Single-Phase |
24A |
Adapted to high-power 230V single-phase overseas scenarios, applicable to medium blowers and small production line conveying equipment |
| VFD022EL43A |
2.2kW (3HP) |
400V |
Three-Phase |
7.1A |
Designed for 400V three-phase power supply in Europe, suitable for medium pumps and printing production line auxiliary equipment |
| VFD037EL43A |
3.7kW (5HP) |
400V / 460V |
Three-Phase |
9A / 8.2A |
Compatible with 400V (Europe) and 460V (North America) three-phase industrial circuits, capable of driving medium blowers and industrial-grade pumps |
Industry Applications & Scenarios
Small-Scale Manufacturing (Light Industry)
- Food Packaging: Powers small vertical form-fill-seal (VFFS) machines, labelers, and conveyor belts in European family-owned food workshops or North American local snack factories--handles variable speeds for different packaging sizes and works with 230V single-phase power common in small facilities.
- Printing & Labeling: Drives mini offset printers, sticker cutting machines, and paper feeders in Southeast Asian small printing shops or US local print shops--precise speed control ensures consistent print quality, and the compact design fits tight workshop spaces.
HVAC & Plumbing (Commercial/Residential)
- Small Blowers/Ventilators: Used in European apartment building ventilation systems, North American restaurant kitchen exhaust fans, or Australian small office air circulation units--230V single-phase models adapt to commercial low-voltage supply, and PID control maintains stable airflow.
- Mini Water Pumps: Powers pressure-boosting pumps for rural homes in Europe (400V three-phase) or North American suburban households (115V single-phase)--AVR function stabilizes water pressure during peak usage, reducing pump wear.
DIY & Small-Scale Processing
- Hobbyist/Workshop Equipment: Drives small lathes, grinders, and woodworking tools in North American DIY garages or European maker spaces--115V/230V single-phase models are easy to install, and multi-speed control suits different processing needs.
- Aquaculture Aerators: Used in small fish farms in Southeast Asia (400V three-phase) or Mediterranean coastal fish ponds--adjustable speed matches oxygen demand for different fish species, and overload protection prevents damage from long-term use.
Retail & Service Industry
- Conveyor Systems: Powers small conveyors in European convenience store checkout lines, North American grocery store produce sections, or Asian boutique clothing stores--compact design fits under counters, and smooth speed regulation avoids product jams.
- Small Refrigeration Units: Drives condenser fans for convenience store display fridges in Europe or small walk-in freezers in North American delis--energy-saving control reduces power consumption, and EMI filter compliance avoids interference with cash registers.
Agriculture (Small-Scale Farming)
- Irrigation Pumps: Used in European family farms (400V three-phase) or North American backyard gardens (115V single-phase)--adjustable flow rate matches crop water needs, and undervoltage protection works with unstable rural power supplies.
- Greenhouse Ventilation: Powers exhaust fans and circulation blowers in Mediterranean greenhouses or North American indoor hydroponic setups--PID control maintains consistent temperature/humidity, and DIN rail mounting simplifies installation in greenhouse control boxes.
Key Benefits for Overseas Markets
- Adapts to regional power standards (115V/230V single-phase, 400V/460V three-phase) for global use--no need for voltage converters in most countries.
- Compact size and DIN rail mounting suit small facilities (e.g., workshops, small farms) where space is limited.
- Comprehensive protection (overheating, overload) handles harsh overseas conditions (e.g., high-temperature workshops, outdoor irrigation).
- Simple operation and Modbus compatibility make it easy to integrate with basic PLCs or control systems--no complex programming required for small businesses.
Frequently Asked Questions
Purchasing & Model Selection
Q1: I'm in North America, my factory uses 115V single-phase power, and I need to drive a 0.5HP small blower. Which model should I choose?
A1: Go with the VFD004EL11A directly. It's exactly 0.5HP (0.375kW) with 115V single-phase input and a rated current of 2.5A, perfectly matching your blower's power and power supply. No need for additional electrical modifications or transformers.
Q2: My European customer requires CE certification. Does this inverter comply?
A2: Absolutely. All overseas-sold VFD-EL series models are CE-certified and meet EN61800-3 EMC standards. They come with a built-in EMI filter to avoid interfering with other equipment, so they're fully compliant for sale and use in EU countries. We can provide the corresponding certification documents for customs clearance.
Q3: I want to place a bulk order. Can you provide English product manuals and installation drawings?
A3: Yes. After placing your order, we'll send the English electronic manual (including parameters, wiring diagrams, and troubleshooting) immediately. If you need a printed copy, just note it in your order, and we'll ship it for free. The manual uses common terminology in the overseas industrial sector, so electricians can understand it at a glance.
Q4: Why do some models have two rated current values? For example, the VFD004EL21A is marked 2.7A/6.5A. Which one should I follow?
A4: This is due to slight differences in testing standards among overseas distributors. For practical use, refer to the "rated load current"--2.7A is the continuous stable operating current, and 6.5A is the short-term peak current. As long as your equipment's rated current doesn't exceed 2.7A, it's fine. No need to worry about the peak value.
Installation & Wiring
Q5: I'm in Southeast Asia, and my factory uses 400V three-phase power. Any precautions for wiring during installation?
A5: Focus on the terminal labels: Connect L1, L2, L3 to the three-phase live wires, U, V, W to the motor, and make sure the ground terminal (PE) is properly connected to avoid safety hazards. Additionally, Southeast Asia has high humidity--spray some anti-rust agent on the terminals before wiring to prevent moisture oxidation, and secure the wires with cable ties after connection to avoid loosening from vibration.
Q6: My small workshop has limited space. Can I install the inverter right next to other electrical devices?
A6: Side-by-side installation is allowed, but note two things: First, don't block the inverter's cooling vents. Second, if there are high-power devices nearby (like contactors), leave a 5cm gap to prevent mutual interference with heat dissipation. Temperatures can easily rise in small spaces, and poor heat dissipation will trigger overheating protection.
Q7: I'm a DIY user with no electrical experience. Can I install it myself?
A7: Installation of single-phase models (e.g., 115V, 230V) is straightforward. Follow the wiring diagram in the manual: Connect the live wire to R/L, neutral to N, motor to U, V, W, and ground to PE. The steps are simple. However, we recommend hiring a local certified electrician for three-phase models--incorrect wiring of three-phase power can easily burn the motor or inverter. Safety first!
Q8: No response after installation and power-on. What's the issue?
A8: Check these three points first: ① Is the power switch on, and are the wires properly connected (especially live and neutral)? ② Does the inverter's power voltage match your selected model (e.g., connecting a 115V model to 230V will blow the fuse)? ③ Did you accidentally press the "Stop" button? If the panel shows "STOP", press the "Run" button and try again.
Operation & Maintenance
Q9: The water pressure fluctuates when driving a pump. How to adjust it?
A9: Use the inverter's PID function--connect the pressure sensor to the inverter's feedback terminal, then set the target water pressure (e.g., 0.3MPa) on the panel. The inverter will automatically adjust the motor speed to maintain stable pressure. If you're unsure how to adjust it, contact us for a simple debugging video. You can follow the steps in 5 minutes.
Q10: The inverter makes a slight noise during operation. Is this normal? Can it be eliminated?
A10: A faint "hum" is normal--it's the sound of the internal IGBT modules working and won't affect use. If the noise is too loud, it may be due to unstable installation (e.g., loose DIN rail) or worn motor bearings. First, secure the inverter tightly, then check the motor. This usually solves the problem--no need to replace the inverter.
Q11: What about overseas after-sales support? Can it be repaired locally if it breaks down?
A11: We have cooperative repair centers in major countries across Europe, North America, and Southeast Asia. The equipment comes with a 1-year warranty. For non-human damage during the warranty period, we offer free repair or replacement of parts. After the warranty, paid repair services are available. Spare parts are in stock, and repairs typically take 7-10 days--no need to ship it back to China, saving time.
Q12: How to store it if not used for a long time?
A12: First, disconnect the power, clean the dust on the inverter's surface, and store it in a dry, well-ventilated place away from direct sunlight and humidity (e.g., during Southeast Asia's rainy season, store it in a moisture-proof box). Power it on and run it for 10 minutes every 3 months to keep the internal components active and prevent capacitor aging, so it won't have issues when used again.
Q13: Can it connect to my factory's PLC? We use the Modbus RTU protocol.
A13: Absolutely. The VFD-EL series comes with a built-in RS-485 interface (RJ-45) and supports Modbus RTU by default. For wiring, connect the PLC's 485+ to the inverter's 485+ and PLC's 485- to the inverter's 485-. Then set the baud rate (default 9600) and address (default 1) in the PLC, and communication control will work. The manual includes a detailed communication parameter table--just follow the settings.
Q14: It suddenly shows "OC" alarm during operation. How to fix it?
A14: "OC" is an overcurrent alarm. First, disconnect the power and let it cool for 10 minutes, then check: ① Are the motor wires short-circuited (e.g., U, V, W terminals touching each other)? ② Is the motor jammed (e.g., pump impeller blocked by debris)? ③ Is the load exceeding the inverter's rated power (e.g., using a 0.4kW inverter to drive a 1kW motor)? After eliminating these three issues, restart it. If the alarm persists, contact after-sales for inspection.
