> Industries > Air conditioning technology > FFU/EFU
Specialized rooms require specific conditions, and in cleanrooms, this means maintaining exceptionally clean air with a high exchange rate, adequate pressure, precise temperature and humidity control, and consistently high air quality. To meet these requirements, robust ventilation systems, or filter-fan units, are essential.
These units are crucial for supplying ultra-clean air to production and filling facilities. Commonly installed in ceiling-mounted systems, they are used in cleanrooms within industries such as chip manufacturing, bottle filling, plastic molding, pharmaceuticals, and microstructure technology. In these applications, everything must function seamlessly, supported by reliable and durable fans.
The filter-fan units, combining advanced filtration technology with high-performance fans, ensure the necessary recirculating air mode. They also effectively prevent airborne contamination, protecting sensitive products from damage or defects. Moreover, ebm-papst FFUs operate with minimal noise, meeting stringent noise protection standards critical for cleanroom production environments.




Which FFU solution would you like?
MODBUS / 0-10 V combination input for digital or analog control with MODBUS RTU or potentiom-eter
- ●Speed control possible with potentiometer or any 0–10V source, e.g. laminar flow con-troller
- ●Remote querying of any 0–10V sensor (e. g. pressure) connected to the analog 0–10V input of the fan
- ●Speed setting using any MODBUS RTU master

MODBUS / DCI autoaddressing function for cleanroom
Fans with MODBUS/DCI interface can be addressed via a voltage signal of 15 V/24 V DC (Init pin at pin 8 of the RJ45 plug).
Only the unit activated with the Init pin listens to messages sent to slave address 247 and accepts a new MODBUS address written by the master control to this 247 address. After a unit is successfully addressed its DC relay is switched on and the 15 V/24 V Init pin is forwarded to the next fan module in the chain.
This fan is now activated via the hardware signal (Init pin) and address-ing continues as described above.

RadiCal
The power to change. Quieter, more efficient and more powerful than ever: the new RadiCal generation.

RadiCal
The power to change. Quieter, more efficient and more powerful than ever: the new RadiCal generation.

RadiCal
The power to change. Quieter, more efficient and more powerful than ever: the new RadiCal generation.

RadiCal
The power to change. Quieter, more efficient and more powerful than ever: the new RadiCal generation.

Overview of our products for FFU/EFU:

EC Centrifugal fans
The LONGWELL EC centrifugal fans showcase a comprehensive array of exceptional features, including high efficiency levels, user-friendly handling, and compact dimensions.

EC axial fan
Robust and powerful, our pressure-resistant axial fans are quiet and economical, making them ideal for outdoor installations.

High performance ventilation fans
powerful air flow,easy to install and maintain,maintenance-free ball bearings.