Product Description:

The 131F0958 variable frequency drive is manufactured by Danfoss and belongs to the VLT FC 202 AQUA Drives series. Designed for pump and fan control, it converts fixed-frequency mains power into an adjustable electrical output for connected motors. This speed control allows water and wastewater systems to regulate flow and pressure according to changing process demands. The unit is suitable for low-voltage applications in pump rooms, treatment facilities, and other clean industrial locations where controlled fluid movement is required.

The drive provides a continuous mechanical output of 18.5 kW (25 HP). It accepts three-phase power from a mains supply ranging from 200 to 240 VAC, making it compatible with common low-voltage distribution systems. In facilities with a matching supply, the drive can connect to the available electrical service without an additional voltage conversion stage. All wiring passes through standard cable entries, providing conventional routing for power, motor, and control conductors. The control section does not include a brake chopper, so applications that produce regenerative braking energy require an external method of managing that energy. The base configuration also maintains a compact mechanical footprint without additional control or filter modules installed.

The housing has an IP21 / Type 1 rating, which protects against accidental finger contact and vertically falling water droplets. This enclosure is intended for vertical wall mounting in clean electrical rooms or comparable indoor areas. An installed RFI filter reduces conducted radio-frequency interference and supports compliance with basic electromagnetic compatibility requirements for residential networks. Local operation is provided through a graphical local control panel, allowing users to view operating information and adjust drive parameters without a separate control device. The power board uses an uncoated printed circuit board, so the drive should be protected from excessive humidity, condensation, corrosive vapors, and conductive airborne contamination. Adequate room ventilation and appropriate enclosure placement help prevent moisture and contaminants from reaching the internal electronics during operation.