Product Description:

The FC-202P4K0T6134F8526 is an AC variable-frequency drive produced by Danfoss for the VLT FC 202 AQUA Drives series. As a dedicated pump and fan controller, it modulates the speed of three-phase induction motors used in water supply, irrigation, and wastewater treatment systems. By adjusting motor frequency and voltage, the drive maintains constant pressure or flow, improving process stability and reducing mechanical stress in industrial automation lines and municipal installations.

The drive delivers 4.0 kW of continuous electrical power, equivalent to 5.0 HP at the motor shaft, while operating on three-phase mains. Electrical conversion is supported by an efficiency of 0.97, so most input energy reaches the load rather than being dissipated as heat. At 550 V, the power section can supply 6.1 kVA, and the rectifier draws a maximum of 5.8 A from the supply under full load. Control terminals provide a 0–20 mA or 0–10 V feedback path; the analog channel can drive a 500 Ω load, whereas digital status pulses switch up to 40 mA at a carrier frequency of 32 kHz. Motor leads may extend to 150 m with shielded cable or 300 m with unshielded cable, allowing remote pump placement without additional filters.

Total internal power loss is 145 W, and this heat must be removed by enclosure airflow at ambient temperatures up to 50 °C without derating. For pump starts, the inverter can deliver 6.4 A to the motor when the DC bus is between 525 V and 550 V, and it is protected upstream by a maximum pre-fuse rating of 20 A. The permissible phase imbalance of 3.0% helps protect the rectifier against unequal line voltages, especially on rural feeders. When installation guidelines are followed, including the stated cable lengths and proper grounding, the drive maintains stable torque delivery to centrifugal and positive-displacement pumps.