Karl Klein Ventilatorenbau GmbH - Industrieventilatoren

Frequency converter

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Frequency inverter - intelligence for fans

We can equip our fans up to a motor power of 22.0 kW with a frequency converter mounted directly on the motor terminal box - up to 1.1 kW


single-phase fed types are also available.
Frequency converters are primarily used for stepless control of the complete volume flow

range of a fan beyond the mains frequency. This allows the motor speed or the volume flow to be optimally adapted to the process requirement.

(Kopie 9)

Datasheet example: Fan type MHV 875-1-180-30

This type of process control not only has a high energy-saving potential, but also protects the fan from mechanical wear through gentle starting.

In addition to the conventional analog signal, the frequency inverters are optionally available with a variety of communication options (fieldbus systems) and can thus be integrated into any application control.

The following fieldbus communications are optionally available:
CANopen, EtherCAT, EtherNet, Modbus, Profibus, Profinet and Sercos.

Compared to an inverter in the control cabinet, this decentralized solution reduces the costs for wiring and installation and by eliminating the shielded motor cable.

Despite the above-mentioned advantages of a decentralized solution, it is not always possible to do without a frequency converter in the control cabinet, e.g. for applications in the ATEX area. For this reason, we also supply frequency converters for control cabinets, which we adapt and pre-parameterize perfectly to customer requirements.