Product Description:

The FC-202P11KT4131Z1779 is an AC variable-frequency drive produced by Danfoss for the VLT FC 202 AQUA Drives series. It modulates the voltage and frequency supplied to centrifugal pumps, aerators, and similar three-phase induction motors so that flow or pressure can track real-time process demand in water and wastewater treatment systems. By integrating the drive into a plant control loop, operators gain continuous speed adjustment, reduced energy use, and softer mechanical starts compared with across-the-line starters.

The power section is designed for three-phase networks within 380–480 VAC, and the allowable line frequency is 50/60 Hz. At 380–440 V, the input section draws a continuous 22 A, while the inverter stage can deliver up to 24 A to the motor terminals. This current capacity supports demanding pump and aerator applications. The output voltage can range from zero to 100% of the incoming mains voltage. Programmable carrier control lets the unit generate a fundamental output frequency between 0–590 Hz, enabling operation with standard 60 Hz motors and compatible high-speed motors. Internal power losses are limited to 392 W, which helps determine enclosure ventilation requirements.

An overall efficiency of 0.98 at nominal load limits wasted power and reduces heat generation during continuous operation. The power electronics and DC bus support a rated motor output of 11 kW. At 400 V, the drive provides 16.6 kVA of continuous apparent power. The recommended line-side protection is a 63 A time-delay fuse for coordination with upstream switchgear. Motor leads can extend up to 300 m with unshielded cable, while shielded motor cables can extend up to 150 m without exceeding reflected-wave voltage limits. On supplies between 441 and 480 V, the output stage sustains 21 A continuously and maintains torque control during acceleration, deceleration, and PID-based flow regulation.