Product Description:

The FC-202P45KT6134F3872 is a variable frequency drive produced by Danfoss within the VLT FC 202 AQUA Drives series. Designed for pump, blower, and filtration duties, the unit modulates the speed of three-phase induction motors so water and wastewater processes can maintain flow or pressure without mechanical throttling. By adjusting output frequency and motor voltage in real time, the drive minimizes energy use and reduces hydraulic shock while providing automated control that integrates with plant-level instrumentation.

The control interfaces accommodate typical instrumentation loops. The analog channel supports loads of up to 500 Ω and provides 8-bit resolution, which is adequate for simple level or pressure references. Two digital outputs supply 40 mA each and switch at 32 kHz for fast status signaling. A 150 A line fuse protects the input bridge, and the inverter can operate motors at frequencies up to 590 Hz, provided that the mains phase imbalance remains below 3.0%. A conversion efficiency of 0.98 helps limit heat generation within the enclosure. During high-overload operation, the incoming current at 550 V reaches 49 A, while the DC link and IGBTs handle the associated electrical and thermal loads.

During transient events, the motor terminals can supply 54 A at 550 V, enabling 37 kW of mechanical power for short operating periods, such as rapid sump emptying. Under standard duty, the drive delivers 45 kW continuously, with an output current of 65 A and a line-side current of 59 A. Soft-fill pipelines benefit from the extended 3600 s ramp, which allows pressure to rise gradually and reduces stress on connected piping. Capacitor life is protected by limiting startup frequency to one power-up cycle per minute. The three-phase design supports variable-load water applications that require controlled acceleration, continuous pump operation, and brief periods of increased output.