Drive identity and application
The Fuji FRN050F1S-4DY is a FRENIC-ECO Pump (F1-DY) drive rated for 3-phase 460 V input, 50 HP output. The F1-DY suffix indicates a pump-specific firmware variant with built-in features for centrifugal load profiles — flow control, pressure regulation, and sleep/wake functionality for variable-torque applications like water supply, HVAC circulation, and irrigation.