What’s the difference between VSD and VSD+ air compressors?

Atlas Copco’s VSD+ compressors are a revolutionary in-house design featuring an interior Permanent Magnet (iPM) motor. The iPM motor shares a rotor with the unit’s best-in-class asymmetric compression elements, so it’s direct-drive and Atlas Copco’s VSD+ compressors are a revolutionary in-house design featuring an interior Permanent Magnet (iPM) motor. The iPM motor shares a rotor with the unit’s best-in-class asymmetric compression elements, so it’s direct-drive and Atlas Copco’s VSD+ compressors are a revolutionary in-house design featuring an interior Permanent Magnet (iPM) motor. The iPM motor shares a rotor with the unit’s best-in-class asymmetric compression elements, so it’s direct-drive and Atlas Copco’s VSD+ compressors are a revolutionary in-house design featuring an interior Permanent Magnet (iPM) motor. The iPM motor shares a rotor with the unit’s best-in-class asymmetric compression elements, so it’s direct-drive and highly energy efficient. The entire VSD+ drive train is a closed circuit, where both motor and elements are cooled with oil, which provides further energy savings. With no coupling or gears between the motor and screw element, VSD+ compressors are exceptionally quiet.
VSD+ compressors feature a patented sentinel valve that completely seals the element during stop. This prevents any escape of compressed air, eliminating blow-off losses. Maintaining pressure in this manner also requires less energy to restart the compressor, avoiding power spikes.

• Highly energy efficient – The iPM motor provides energy savings of 50 percent on average compared to idling compressors.
• Smaller and taller – VSD+ machines feature a unique vertical design concept that reduces the system’s footprint by about 60 percent.
• Improved free air delivery – An impressive 6 percent increase in FAD further improves VSD+ efficiency and performance.
• Less noise – VSD+ machines feature an innovative cooling fan that produces as little as 73 dB(A) during operation. This allows compressor installation on the factory floor rather than in a separate room, potentially freeing a dedicated compressor room for other another use.
• Easy service – VSD+ machines feature easy-to-access parts, a maintenance-free sentinel drive and electronic water drain.
• Monitoring – The VSD+ range incorporates Atlas Copco’s a state-of-the-art Elektronikon® smart controller system that features embedded
  • Highly energy efficient – The iPM motor provides energy savings of 50 percent on average compared to idling compressors.
  • Smaller and taller – VSD+ machines feature a unique vertical design concept that reduces the system’s footprint by about 60 percent.
  • Improved free air delivery – An impressive 6 percent increase in FAD further improves VSD+ efficiency and performance.
  • Less noise – VSD+ machines feature an innovative cooling fan that produces as little as 73 dB(A) during operation. This allows compressor installation on the factory floor rather than in a separate room, potentially freeing a dedicated compressor room for other another use.
  • Easy service – VSD+ machines feature easy-to-access parts, a maintenance-free sentinel drive and electronic water drain.
  • Monitoring – The VSD+ range incorporates Atlas Copco’s a state-of-the-art Elektronikon® smart controller system that features embedded
    • Highly energy efficient – The iPM motor provides energy savings of 50 percent on average compared to idling compressors.
    • Smaller and taller – VSD+ machines feature a unique vertical design concept that reduces the system’s footprint by about 60 percent.
    • Improved free air delivery – An impressive 6 percent increase in FAD further improves VSD+ efficiency and performance.
    • Less noise – VSD+ machines feature an innovative cooling fan that produces as little as 73 dB(A) during operation. This allows compressor installation on the factory floor rather than in a separate room, potentially freeing a dedicated compressor room for other another use.
    • Easy service – VSD+ machines feature easy-to-access parts, a maintenance-free sentinel drive and electronic water drain.
    • Monitoring – The VSD+ range incorporates Atlas Copco’s a state-of-the-art Elektronikon® smart controller system that features embedded
      • Highly energy efficient – The iPM motor provides energy savings of 50 percent on average compared to idling compressors.
      • Smaller and taller – VSD+ machines feature a unique vertical design concept that reduces the system’s footprint by about 60 percent.
      • Improved free air delivery – An impressive 6 percent increase in FAD further improves VSD+ efficiency and performance.
      • Less noise – VSD+ machines feature an innovative cooling fan that produces as little as 73 dB(A) during operation. This allows compressor installation on the factory floor rather than in a separate room, potentially freeing a dedicated compressor room for other another use.
      • Easy service – VSD+ machines feature easy-to-access parts, a maintenance-free sentinel drive and electronic water drain.
      • Monitoring – The VSD+ range incorporates Atlas Copco’s a state-of-the-art Elektronikon® smart controller system that features embedded connectivity with SmartLink. This allows simple and effective remote monitoring and integrates with plant management systems.
      • Built to last – During research and development, Atlas Copco engineers designed individual VSD+ components to be robust and long lasting, making downtime for service less likely.
      • Lower total cost of ownership – Total lifecycle cost is reduced by approximately 37 percent compared to a similarly sized VSD machine.
      • Flexibility – VSD+ technology is available in a wide range of Atlas Copco GA models.