Product Description:

The FC-202P45KT4131B9532 variable-frequency drive is produced by Danfoss and belongs to the VLT FC 202 AQUA Drives series. It is used in automated pump and fan systems where precise motor speed control maintains setpoint flow or pressure while limiting energy consumption and mechanical stress. By integrating with typical plant PLC signals, the drive forms the power stage that closes the control loop between process sensors and three-phase induction motors. Its control capabilities support applications that must adjust motor operation in response to changing process demand.

The input section accepts 380 – 480 VAC from three-phase power lines, allowing direct connection to common industrial mains. The output frequency can be adjusted up to 590 Hz, providing a broad operating range for high-speed impellers or oversynchronous clean-water flushing cycles. Acceleration and deceleration are programmable, with a maximum ramp time of 3600 s to protect piping from sudden pressure changes. The power stage is rated for Overvoltage Category III, indicating that its insulation clearances are suitable for fixed installation inside distribution equipment. The protective design also includes short-circuit withstand coordination so the drive can remain connected when an upstream breaker clears a fault.

The drive provides pump cascade and sleep functions for managing water-system demand and reducing unnecessary motor operation. The power terminals can withstand a prospective fault current of 100 kA, supporting installation on high-capacity switchboards without additional current-limiting devices. To accommodate grid variations, the control electronics tolerate a supply frequency deviation of +4/−6% and a line-voltage variation of ±10%. These tolerances help the inverter continue operating during typical utility fluctuations and generator transitions. The available ramp control also helps reduce hydraulic shock when pumps start, stop, or change speed in response to process conditions.