Product Description:

The 134F6888 is an AC variable-frequency drive produced by Danfoss for the VLT FC 202 AQUA Drives series. It converts a fixed line supply into a modulated output for controlling the speed of centrifugal pumps and blowers. This speed control allows plant systems to respond to fluctuating water-handling demand while reducing energy consumption and mechanical stress. The drive is suitable for municipal and industrial fluid systems that require variable flow or pressure under changing operating conditions.

This model connects directly to a supply of 380 to 480 VAC delivered through three-phase power, so an external transformer is not required in typical 400 V switchgear. The IGBT inverter supports a continuous motor output rating of 22 kW, which is equivalent to 30 HP under nominal operating conditions. This capacity allows the drive to regulate motors used for substantial pumping or ventilation loads without exceeding its continuous output range. The enclosure has an IP66 / NEMA 4X rating, providing protection against dust, water jets, and corrosive conditions commonly found in chemical dosing rooms and water-processing facilities. Conducted emissions are reduced by the built-in RFI filter, helping limit radio-frequency interference within the electrical system. This filtering can reduce the need for additional suppression components when the drive is installed with properly routed and shielded wiring.

A front-mounted Graphical Local Control Panel provides local operation, real-time trend views, parameter adjustment, and parameter backup without requiring a separate computer. The clear graphical interface also allows operating values and drive status information to be reviewed directly at the enclosure. This model has a lack of an integrated brake chopper, so applications requiring regenerative stopping must use braking equipment appropriate for the system design. The unit also has an uncoated printed circuit board, making condensation control important when it is installed in humid locations. Smooth imperial cable-entry panels simplify conduit routing while preserving the enclosure seal. The unused A, B, C0, and C1 option slots remain blank, leaving the standard internal configuration unchanged and avoiding additional heat from optional interface modules.