Product Description:

The FC-202PK25T2131G3981 is an AC variable frequency drive manufactured by Danfoss for the VLT FC 202 AQUA Drives series. Designed for pump and fan duties in water treatment skids and distribution networks, the unit adjusts motor speed to match process demand, which can reduce energy consumption and mechanical stress in automated installations. The drive accepts a three-phase 200–240 VAC power supply and draws a continuous input current of 1.6 A. It tolerates a maximum supply phase imbalance of 3.0%, allowing operation with minor variations among the incoming phases.

The drive delivers a continuous output current of 1.8 A to the motor terminals. Its apparent power requirement is 0.65 kVA, while the power stage operates with an efficiency of 0.94 at rated load to limit heat production inside the panel. The inverter provides a shaft output of 0.25 kW (0.34 HP) for compatible pump and fan motors. Two analog input channels accept process signals for closed-loop speed control, and each channel has an analog bandwidth of 200 Hz. Each digital output can source up to 40 mA for connected control devices. Power cycling should be limited to no more than two startups per minute to avoid unnecessary stress on the inrush circuit.

The drive processes analog signals with a 10-bit resolution, allowing 0–10 V or 4–20 mA inputs to be divided into 1,024 steps for stable PID feedback. The digital input block accepts logic pulses at frequencies up to 32 kHz without timing degradation, supporting high-speed control signals from external devices. The recommended line pre-fuse is rated at 10 A, providing appropriate upstream protection for the incoming power connection. At full load, the power section dissipates 21 W, which helps limit the thermal load placed on the enclosure. Adequate panel ventilation and the required installation clearances should be maintained so generated heat can leave the drive and surrounding components without obstructed airflow.