Product Description:

The FC-202P37KS4134H0438 is an AC variable-frequency drive produced by Danfoss for the VLT FC 202 AQUA Drives series. Carrying the internal series identifier 202, it belongs to a platform developed specifically for water and wastewater equipment. The unit converts fixed mains power into variable output power that regulates centrifugal pumps, blowers, and other fluid-handling motors. By adjusting motor speed instead of throttling flow, it supports stable pressure control and can reduce mechanical stress on components in automated treatment and distribution plants.

Rated motor output reaches 37 kW, so the drive can handle medium-sized pump stations without unnecessary oversizing. It accepts a supply of 380-480 VAC and is designed for single-phase power connections in installations where three-phase service is unavailable. Overall conversion efficiency is 0.96, placing the product in the IE2 energy efficiency class and keeping power loss low for cabinet ventilation. Control interfaces include an analog output that can supply instrumentation loads with an impedance as low as 500 Ω. Eight digital inputs accept signals up to 28 V DC, while a pulse output can report speed at frequencies up to 32 kHz for flow metering or external counters.

For protection of upstream conductors, the drive supports a pre-fuse rating of 250 A, and its terminals accept motor leads with cross-sectional areas up to 120 mm². Shielded cable runs may extend to 150 m, while unshielded leads can reach 300 m without exceeding the permitted drive-induced voltage drop. Continuous operation is permitted at altitudes up to 1,000 m and at ambient temperatures as high as 50 °C. Reduced-load operation is allowed at temperatures down to 0 °C, while storage or intermittent operation can begin at -10 °C. The estimated power loss is 1,480 W at rated output, which provides a basis for calculating the airflow or cooling capacity required within the enclosure.