
Supply air for buildings
Energy savings in ventilation systems
Energy saving solution – ventilation systems
Energy saving potential = up to 16%
The effiDRIVE^{®} solution with energyefficient motor and MOVITRAC^{®} B frequency inverter saves a total of € 218,500 after only 5 years of operation. This calculation still excludes additional savings resulting from the continuous adjustment of the work process, and thus the speed, to the actual demand.
Your benefits from using MOVITRAC® B frequency inverters and DRE.. energyefficient motors
Process and speed adjustment leads to reduced output speed
Energyefficient adjustments to your work processes achieved using infinitely variable speed and torque regulation will reduce your power demand significantly.
Increase the motor efficiency!
The energyefficient motors DRE.. (IE2 = High Efficiency) and DRN.. (IE3 = Premium Efficiency) will reduce your power loss by up to 40% compared to standard motors. Use the MOVITRAC^{®} B energy saving function with dynamic adjustment of the magnetizing current. This will enable you to operate the motor at optimum efficiency at any operating point in the partial load range.
Reduce the overall energy consumption!
Save € 95,000 in energy costs per year with the help of the highly energyefficient motors DRE.. (IE2= High Efficiency) combined with the MOVITRAC^{®} B frequency inverter. After a retrofit of the building’s fresh air supply system, overall energy consumption will be reduced by more than 16%. What’s more, this calculation does not even include the energy saved by continuous adaptation of the process and the speed to the actual demand.
Measurable success of the effiDRIVE® efficiency solution
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Comparison between  Standard version  effiDRIVE^{®} solution 

Components for a project with 96 building fans each  Polechanging asynchronous motors and fan adjustment  DRE180 M4 controlled energyefficient motors and MOVITRAC^{®} B frequency inverters with energy saving function 
Investment  0% (installed)  100% 
Energy costs/year*  € 675,000  € 580,000 
Energy consumption  116%  100% 
Amortization time  Approx. 2.7 years  
CO_{2}savings per year  720 metric tons 


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