Product Description:

The FC-202P18KT6131Z9933 is an adjustable-speed motor drive produced by Danfoss within the VLT FC 202 AQUA Drives series. As part of the VLT AQUA Drive product group, it regulates induction motors used in pumping and fan installations by converting fixed-frequency mains power into variable-frequency output. The unit is intended for industrial supplies and serves as an automation component that optimizes energy use and process flow in water treatment and other fluid-handling systems.

The drive delivers a continuous electrical output of 18.5 kW, equivalent to 25 HP, allowing it to handle medium-sized centrifugal pumps and blowers. It is designed for three-phase power networks and maintains an energy conversion efficiency of 0.98 under nominal load, which reduces heat losses inside the panel. Output frequency can be modulated from zero up to 590 Hz, permitting oversynchronous motor operation when high flow rates are needed. One analog output and two digital outputs are provided for process feedback, while the digital outputs can source up to 40 mA for relay coils or status lamps. Command pulses are accepted at frequencies up to 32 kHz, supporting high-resolution speed references from external controllers. The drive accommodates shielded motor leads up to 150 m long and unshielded runs up to 300 m long without exceeding voltage-drop limits.

During high-overload cycles, the 550 V line current is limited to 20.9 A, while the normal-overload demand is 25.4 A. A feeder fuse rated at 50 A is recommended to clear upstream faults rapidly. Full output is maintained until the ambient temperature reaches 50 °C; above this threshold, the inverter reduces the carrier frequency to protect its semiconductors. Installations at altitudes up to 1,000 m require no adjustment, allowing the panel to be mounted on multistory sites without capacity loss. The internal control logic supervises load conditions and records events for review before sustained thermal stress develops.