Product Description:

The FC-202P5K5T6131G2831 is an AC variable frequency drive manufactured by Danfoss for the VLT FC 202 AQUA Drives series. The unit converts fixed-frequency three-phase mains power into regulated voltage and frequency for centrifugal pumps and blowers used in water-treatment process lines. In automated fluid-handling systems, this control lowers energy consumption and limits mechanical shock during startup and valve transitions.

It delivers a continuous apparent power of 9.0 kVA and a motor output of 5.5 kW, equivalent to 7.5 HP. Electrical efficiency is 0.97, so only 3% of the supplied power is lost as heat. The input bridge draws up to 8.6 A from a 525 to 600 V network and requires a 32 A input fuse. At its output terminals, the inverter can supply 9.5 A when the DC bus is maintained between 525 V and 550 V. Screw clamps accept copper conductors up to 4 mm² for line, motor, or brake wiring, and the analog output can drive loads with an impedance as low as 500 Ω without clipping. The three-phase configuration permits direct connection to standard induction motors, while a minimum brake resistance of 135 Ω supports regeneration during rapid deceleration.

When the mains voltage exceeds 550 V, the continuous motor current is 9.0 A. Carrier frequencies can reach 32 kHz to reduce acoustic noise without sacrificing torque linearity. Power dissipation is limited to 195 W at rated load, allowing the drive to be installed in a suitable control cabinet. The transistorized digital output supplies 40 mA for external relays. Braking energy can be directed to the recommended 145 Ω resistor or the nominal 166.6 Ω resistor to support controlled stops in high-inertia pump systems. The drive monitors flow demand, regulates motor torque, and coordinates analog and digital input and output signals to maintain pressure targets. Its control functions allow pump speed to follow changing process requirements instead of operating continuously at full speed.