Perfect choice for efficient oil-free compressor 30kW-50kW range
What if your compressor could lower energy costs and adjust to your production needs instantly?
That is where Atlas Copco’s Z tooth VSD+ compressors come in the picture. VSD+ (Variable Speed Drive Plus) is our premium technology which adjusts compressor speed based on your air demand. It ensures optimal performance by using all our in-house manufactured components.
The combination of VSD+ and rotary tooth technology is designed to deliver market-leading energy efficiency, especially in the 30-50 kW range for applications where achieving high air quality is crucial. Together, they form a system that responds instantly to changing air demand and avoids energy waste from unnecessary full-speed operation. Industry leading biggest turn down gives extra flexibility to your operational needs. But what makes rotary tooth VSD+ this efficient?
Components that drive efficiency
Dual drive train driven by IE5 Permanent Magnet Motors:
In-house designed tooth element:
Dual NEOS Next Drives:
Elektronikon® Mk5 Touch
Smart to the Smartest: VSD vs. VSD+
Standard VSD is a trusted technology that adjusts motor speed to match air demand, helping reduce energy use. But they rely on traditional motors and gearboxes, which limit how far efficiency can go.
Our VSD+ technology changes the game. With in-house designed permanent magnet motors, direct drive, and a compact design, it cuts out energy losses and takes up less space. Paired with the Elektronikon® Mk5 Touch controller, it doesn’t just react but it optimizes. The result? More air, less power, and smarter performance.
| Standard Fixed speed - VSD | VSD+ (Premisum) | |
| Motor type | IE3/IE4 motors – high efficiency | Uses IE5 oil-cooled permanent magnet motors, delivering highest efficiency in its class |
| Drive system | Traditional fixed or variable speed with gearbox. | Dual direct drive variable speed system eliminates mechanical losses for optimal energy use |
| Start up behaviour | Standard ramp-up with starting currents and energy peaks | Slow ramp-up. Avoids energy peaks for more efficient operation |
| Unload power | High unload power is present, which can lead to energy use during idle periods | No unload power. Z tooth VSD+ compressors consume zero energy when not producing air |
| Ambient independence | Performance influenced by ambient conditions | Oil-cooled motor is independent of ambient conditions for consistent efficiency |
Optional integrated rotary drum dryer (iMD)
For applications where air quality is critical, you can consider pairing your oil-free ZT VSD+ tooth compressor with our innovative built-in rotary drum dryer (iMD). Unlike traditional heatless dryers, which continuously purge compressed air to regenerate the drying medium, iMD dryers use heat of compression which eliminates purge losses. This results in approximately 15–20% energy savings, making them a smart choice for operations where energy consumption is crucial. By combining the intelligent performance of VSD+ with an iMD, you create a fully optimized system that delivers high-quality air with minimal losses and lower operational costs.