Saving energy is becoming an ever increasingly important topic these days. Especially when it comes to AC Axial Fan and ventilation technology, great potential savings can be achieved by using energy efficient fans. For this reason, motor and fan specialist ebm-papst has recognised the issue, and has developed a complete series of dual-inlet, direct-driven cylindrical rotor fans with efficient GreenTech EC technology. Without changing the design of the unit, this allows a conversion from a conventional fan with asynchronous motor to modern energy-saving technology.

With integrated motor electronics, the EC Fan can be easily speed controlled via a 0-10 V signal or by the use of a potentiometer. As an option up to three air flow values can be programmed in "Constant Flow" mode. This means that if the system resistance changes, for example due to polluted filters, the fan keeps the programmed air flow by changing the speed automatically.
read more:www.afl-fan.com