Product Description:

The FC-202P45KT2131U2744 is an AC variable-frequency drive produced by Danfoss for the VLT FC 202 AQUA Drives series, a product group tailored to pumping and aeration tasks in water and wastewater facilities. By modulating output frequency, the unit lets PLCs match motor speed to fluctuating flow demand, improving energy use and lowering hydraulic stress. It connects to three-phase power networks and integrates braking circuitry for controlled deceleration of induction motors used in industrial automation.

Electrical capacity is centered on a rated shaft power of 45 kW, delivered through a continuous output current of 170 A while drawing a maximum input current of 154.0 A from 200–240 VAC mains. The inverter’s apparent power ceiling is 61.2 kVA, and its conversion path operates at an efficiency of 0.97, resulting in an estimated 1,636 W of heat that must be removed from control cabinets. An internal control algorithm maintains a displacement power factor above 0.98 and a true power factor of at least 0.9, limiting reactive loading on supply transformers. The maximum output frequency reaches 590 Hz, so high-pole or gear-reduced motors can still attain the required process speed. Upstream overcurrent protection uses a 250 A fuse. The design restricts motor restarts to one power-up per minute to protect the semiconductors.

The integrated brake chopper accepts resistor banks rated at 3.200 kW with a minimum resistance of 2.4 Ω, providing dynamic energy dissipation during rapid pump stops. Operation is supported at ambient temperatures up to 50 °C, with derating required above this threshold. Installation can use shielded motor cables up to 150 m long, helping keep conducted emissions within the drive’s limits. This cable allowance supports layouts in which the drive enclosure must be separated from pumps or aeration motors by a substantial distance.