Product Description:

The 134F6572 is an AC variable frequency drive manufactured by Danfoss and supplied in the VLT FC 202 AQUA Drives series. It is used in water-handling installations where automatic speed regulation of centrifugal pumps and aeration fans improves process efficiency and reduces energy consumption. By converting fixed-frequency utility power into a variable-frequency output, the unit provides precise flow control while remaining compatible with electrical and mechanical conventions commonly used in industrial automation panels.

The drive operates from a utility supply range of 380–480 VAC using three-phase power, making it suitable for standard low-voltage distribution networks. Conducted emissions are limited by an integrated RFI Class A1/B (C1) filter, supporting installations that require basic electromagnetic compatibility without additional line devices. For networked control, the drive can be fitted with an optional PROFINET MCA 120 communication card. This A-option enables cyclic data exchange with Ethernet-based PLC systems. The chassis has an IP20 enclosure rating, so the drive must be installed in a ventilated cabinet while providing protection against accidental contact with hazardous internal parts.

User interaction is provided through a graphical local control panel mounted on the front plate for local parameter entry and diagnostic access. Internal electronics have a coated PCB finish that protects against moisture and airborne contaminants commonly present in pump rooms. The power section has no brake chopper, so energy produced during rapid deceleration must be managed by the motor load instead of an integrated braking resistor. Power and control conductors enter through standard cable entries, identified as Adaptation A, which simplifies the gland-plate layout. The front-mounted controls provide direct access to operating values, alarms, and adjustable drive parameters without requiring a separate operator interface.