VFD Air Compressor
Permanent Magnet Screw Compressors by Loitha
At Loitha, we manufacture innovative VFD Air Compressors designed with Permanent Magnet Variable Speed Drive (PM VFD) technology for unmatched efficiency and reliability. Unlike a traditional fixed-speed air compressor that continues to operate continuously at full speed, our compressor with variable speed drive adapts its motor speed to meet the actual air demand, ensuring significant energy savings and stable compressed air production.
Our VFD compressor makes sense in industries where the demand for compressed air fluctuates. With German rotary screw technology, Loitha provides energy-efficient air compressors that reduce operating costs, lower noise, and extend service life – making them a long-term investment in efficiency.
Key Features of Loitha VFD Air Compressor
- Advanced Energy Savings with Variable Speed Drive – Motor adapts its speed to reflect air demand.
- Minimal Long-Term Costs through optimized compressed air system design.
- Industry-Leading Warranty for reliable assurance.
- Best-in-Class Dependability powered by German rotary screw elements.
- Low Noise (around 70–80 dB) for workplace comfort.
- Stable Airflow with VFD regulation – inverter provides the VFD compressor control to adjust speed.
- User-Friendly Operation with advanced micro touch screens.
Our compressors are designed with rotary screw elements that adapt in sync with actual compressed air demand, ensuring virtually proportional free air delivery to speed.
Applications of VFD Air Compressor
The Loitha VFD Air Compressor is widely used in:
Wherever the amount of compressed air delivered varies, our compressor with variable speed ensures efficiency and reliability.
MORE EFFICIENT WITH GERMAN TECHNOLOGY
- Technology Innovation
- Long Life
- Low Noise
- High Efficiency Air End
- Low Vibration
MORE COMFORTABLE WITH LOWER NOISE
- The frequency conversion type supplies energy based on air demand, minimizing energy loss. With a low motor running frequency, mechanical noise is reduced.
- Adjusting motor speed eliminates the need for repeated loading and unloading, lowering noise from these actions. Continuous loading pressure further reduces noise from unstable pressure.
MORE STABLE WITH VFD REGULATION
Adopting frequency conversion speed control to make full use of energy-saving effect to create a new generation of energy saving compressor that saves electricity and energy
The conventional speed regulation method of the air compressor is to adjust the air intake volume by adjusting the inlet valve. The input power is large, and a large amount of energy is consumed in the current-carrying process of the valve. When using the variable frequency speed. If the flow requirement are reduced, the requirement can be the met by reducing the speed of the host.
Provide the necessary amount of air with the necessary pressure through constant pressure control
High-accuracy constant-pressure control with a pressure variation range of + 0.01 MPa or less can be performed, effectively providing the machine with the most suitable air pressure necessary. Moreover, the accuracy of the set pressure is 0.01 MPa, accurate setting to achieve maximum energy savings.
MORE CONVEYANT WITH MICRO TOUCH SCREEN
Intelligent HMI human-computer interaction interface, the operation is very simple and convenient, and state is clear at a glance.
- In the newly developed HMI man-machine interface, it is very intuitive and convenient, which can directly realize the conversion of energy-saving mode and remote operation on the display screen. Moreover, in case of failure, the content of the failure will be displayed on the display , which can quickly troubleshoot the problem.
- LOITHA unique closed-loop vector control and PID control not only realize fast response, but also ensure safety and reliability. The variable speed control of BPM series compressor and the system control of compressor and all technologies developed by LOITHA. The constant pressure control system accurate to 0.01Mpa not only achieves a high response, but also play a superior load tracking and safety.
- The pressure control mode can be set and changed by touching the screen. Saving electricity pressure control mode can be easily changed on the display screen.
- You can use the functions of timing operation, alternate operation, etc to save energy and save labor.
- The status of the compressor and various settings can be confirmed on the display screen.
MORE CONVENIENT WITH 4 MICRO TOUCH SCREENS
COMPARISON OF ENERGY-SAVING EFFECTS:
- When buying an air compressor, the traditional cost ( ie, purchase cost + maintenance cost) accounts for only 25% of the total cost, while energy consumption accounts for 75%.
- Standard VSD Screw Air Compressor Saves 10-20% Energy Than Fixed Speed Screw Air Compressor
- Loitha PM VSD Screw Air Compressor Saves 33-35% Energy Than Fixed Speed Screw Air Compressor
FOR EXAMPLE
- A 50KW Standard screw air compressor runs for 6000 hours a year, with an electricity fee of Rs. 7/kWh, and the electricity charges for one year is: 50KW*6000 hours *7/KW.h= Rs. 21,00,000
- LOITHA 50KW PM VSD Screw sir compressor, saving about 35% of energy a year a Total of : 21,00,000*35%=Rs. 7,35,000
- Return of Investment (ROI) : About 1 Year
Why Choose Loitha VFD Air Compressor?
- Energy Efficient: Loitha’s variable speed drive or VFD compressors save a lot of energy compared to fixed-speed compressors.
- German Technology: Advanced design ensures durability and superior performance.
- Low Noise & Low Vibration: Comfortable operation, ideal for modern industrial plants.
- Smart Controls: Micro touch screens simplify implementation of compressed air equipment.
- Reliable Air Supply: Provides stable pressure, even with fluctuating compressed air demand.
Loitha’s VFD air compressor technology works best with rotary screw designs, offering comparable or better performance with lower total cost of ownership.
VFD Compressor vs Fixed-Speed Compressor
A fixed-speed compressor is designed to operate only at full speed, producing compressed air even when demand is low. This leads to wasted energy and lower energy efficiency.
In contrast, a Loitha VFD Air Compressor:
- Adjusts motor speed to match the actual air demand
- Provides virtually proportional free air delivery
- Avoids losses caused when compressors operate continuously at full speed
- Reduces energy consumption by up to 35%
This is why industry experts say an air audit is the best way to identify if a VFD compressor is most appropriate for your operations.
The Role of Air Audits in Choosing VFD Compressors
A professional air audit is the best way to identify inefficiencies in your compressed air system.
- Helps determine the implementation of compressed air equipment.
- Confirms whether a VFD compressor is not designed for your specific load profile, or if it’s the right choice.
- Assesses the entire compressed air production system, ensuring maximum efficiency.
By analyzing compressed air demand fluctuations, audits help industries consider a VFD compressor when multiple compressors or variable cycles are in use.
Technical Parameters – VFD Air Compressor Models
| Model | Motor Power | Working Pressure | Free Air Flow | Outer Diameter | Noise level | Weight | Dimensions | |||
| L x W x H | ||||||||||
| 50Hz | kW | Hp | Bar g | Psi g | M3/min | cfm | DN | Db | kg | mm |
| EPM-10A | 7.5 | 10 | 8 | 116 | 1.1 | 39 | 1/2″ | 70±2 | 200 | 950 X 650 X 880 |
| 10 | 145 | 0.9 | 32 | |||||||
| EPM-20A | 15 | 20 | 8 | 116 | 2.3 | 81 | 3/4″ | 74±2 | 270 | 1160 X 700 X 1100 |
| 10 | 145 | 2.1 | 74 | |||||||
| 13 | 188 | 1.9 | 67 | |||||||
| EPM-30A | 22 | 30 | 8 | 116 | 3.8 | 134 | 1″ | 74±2 | 365 | 1200 X 900 X 1150 |
| 10 | 145 | 3.6 | 127 | |||||||
| 13 | 188 | 2.9 | 102 | |||||||
| EPM-40A | 30 | 40 | 8 | 116 | 5.2 | 184 | 1″ | 74±2 | 455 | 1400 X 900 X 1125 |
| 10 | 145 | 4.8 | 170 | |||||||
| 13 | 188 | 3.8 | 134 | |||||||
| EPM-50A | 37 | 50 | 8 | 116 | 6.5 | 230 | 1 1/2″ | 78±2 | 580 | 1560 X 1000 X 1365 |
| 10 | 145 | 5.7 | 201 | |||||||
| 13 | 188 | 4.9 | 173 | |||||||
| EPM-60A | 45 | 60 | 8 | 116 | 7.5 | 265 | 1 1/2″ | 78±2 | 610 | 1560 X 1000 X 1365 |
| 10 | 145 | 6.8 | 240 | |||||||
| 13 | 188 | 5.6 | 198 | |||||||
| EPM-75A | 55 | 75 | 8 | 116 | 10.5 | 371 | 2″ | 80±2 | 980 | 1730 X 1100 X 1610 |
| 10 | 145 | 8.9 | 314 | |||||||
| 13 | 188 | 7.8 | 275 | |||||||
| EPM-100A | 75 | 100 | 8 | 116 | 13.5 | 477 | 2″ | 80±2 | 1050 | 1800 X 1160 X 1490 |
| 10 | 145 | 11.5 | 406 | |||||||
| 13 | 188 | 10.0 | 353 | |||||||
| EPM-120A | 90 | 120 | 8 | 116 | 16.5 | 583 | 2″ | 80±2 | 1750 | 2100 X 1400 X 1780 |
| 10 | 145 | 13.7 | 484 | |||||||
| 13 | 188 | 12.3 | 434 | |||||||
| EPM-150A | 110 | 150 | 8 | 116 | 19.8 | 699 | 2 1/2″ | 80±2 | 2150 | 2500 X 1450 X 1800 |
| 10 | 145 | 17.9 | 632 | |||||||
| 13 | 188 | 15.3 | 540 | |||||||
| EPM-175A | 132 | 175 | 8 | 116 | 24.0 | 848 | 2 1/2″ | 80±2 | 2750 | 2700 X 1580 X 1800 |
| 10 | 145 | 21.3 | 752 | |||||||
| 13 | 188 | 18.3 | 646 | |||||||
| EPM-220A | 160 | 220 | 8 | 116 | 28.5 | 1006 | 2 1/2″ | 80±2 | 3150 | 2700 X 1580 X 1800 |
| 10 | 145 | 25.5 | 901 | |||||||
| 13 | 188 | 21.5 | 759 | |||||||
| EPM-250A | 185 | 250 | 8 | 116 | 31.5 | 1112 | 3″ | 80±2 | 3450 | 2800 X 1830 X 1950 |
| 10 | 145 | 28.5 | 1006 | |||||||
| 13 | 188 | 24.8 | 876 | |||||||
| EPM-300A | 220 | 300 | 8 | 116 | 35.5 | 1254 | 3″ | 80±2 | 3850 | 3250 X 2130 X 2300 |
| 10 | 145 | 30.2 | 1067 | |||||||
| 13 | 188 | 27.8 | 982 | |||||||
| EPM-350A | 250 | 350 | 8 | 116 | 44.5 | 1572 | 3″ | 80±2 | 5000 | 3250 X 2130 X 2300 |
| 10 | 145 | 38.1 | 1345 | |||||||
| 13 | 188 | 34.6 | 1222 | |||||||
| Compression stage: single stage | ||||||||||
| Ambient temperature: -5–+45℃ | ||||||||||
| Cooling model: Air –Cooling | ||||||||||
| Discharg temperature(℃): Ambient temperature+15℃ | ||||||||||
| Drive method: Direct coupled | ||||||||||
| Electricity(V/ph/Hz): 380/3/50 | ||||||||||
| Starting method: Frequency conversion start | ||||||||||
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