Fans with EC-drives, no matter if from ebmpapst, Ziehl Abegg, Nicotra||Gebhardt or Rosenberg, show highest efficiencies especially in partial load range.
Especially in the HVAC applications this is immensely important, where the electronic drives being used very often in partial load operation exclusively.
Total energy savings up to 50% are not rarely compared to concepts with classical drives.
An EC-drives consists of an EC-Motors where permanent magnets create the required radial magnetic field inside the motor and an EC-controller a sort of frequency inverter that creates the current for the motor in a proper manner.
Especially EC-fans in the HVAC business are integrated that means that motor and controller belong to only one single unit.
The drive control of the EC-motor is done by the EC-controller automatically. The user just needs to ensure a set-point is supplied according his requirements.
Infographic - Advantages EC-fans / EC-motors
EC-motors are according to its name electric commutated motors. The control of the stator winding system is done in accordance to the exact position of the permanent-magnet rotor. The position of the rotor is mainly measured by little hall sensors placed in the EC-motor in rotational sense or is calculated using a special mathematical model. In both variations an electronic drive control of the EC-Motor called EC-controllers is indispensable.
Video - EC motor.
Stator eines EC-Motors einer FFU - Nicotra||Gebhardt
Rotor eines EC-Motors (ebmpapst) in einer FFU-Anlage
EC fans are applied in a wide range of HVAC units, especially in speed controlled systems, where high efficiency and noise reduction matters.
It can be for the control of FFUs or FANWALLs, it can be for Condensers and Evaporators or as classical Exhaust- and Supply Air fans.
For our customers we design different diagnostic and control devices for EC-drive market. This includes drive controllers incl. COM-interfaces (analogue, Modbus rtu as well as other, even proprietary, RS485 systems).
Furthermore we plan whole concepts for electric drives (asynchronous and synchronous) especially for fans as well as special applications.
We help our customer at the design, the data management and the project programming of FFU appliances. Furthermore we would like to support you while the commissioning of new cleanroom appliances or extensions and perform on demand an error diagnostic with our own designed tools (i.e. uniquom / uniqunet ) including a final troubleshooting.
Yesterday a production shutdown was planned in a job-side in northern Germany, used by different companies to perform their annual maintenance. So the FFU System, delivered with EC-fans from Nicotra||Gebhardt and commissioned by vbk technology in 2013 was checked was well.
„Troubleshooting - Commissioning - Training“ were written at the P.O. of a big plant engineering company. They pleased us for support for commissioning a FFU-network with fans from ebmpapst with Modbus Interface at site and to train the operating staff afterwards.
After an address-conflict was eliminated in the FFU-network and no other abnormalities were found we did the programming of the uniqunet FFU-control device together with the end user. Now 3 FFU groups will be controlled according to the manufacturing process with different set-values in day/night mode.
Service uniqunet – FFUs in Cleanroomapplication
After a few years of absence the Cleanroom Lounges took place in Karlsruhe this year again. Personal highlight for me was the operation of a of an uniqunet control device driving an EC-fan of a NICOTRA Gebhardt ( former Gebhardt Ventilatoren ) FFU.
uniqunet control device supports NICOTRA Gebhardt FFU
A modern hand device to control and to parametrize several devices with RS485 interfaces.uniquom® - get more information Downloads and information uniquom