The Fuji FRN040F1S-4DY is a FRENIC-Eco Pump (F1-DY) series variable frequency drive, sized for a 40 HP, 3-phase 460 V induction motor. This is the pump-specific variant of the FRENIC-Eco family, meaning the control algorithms and default parameters are tuned for centrifugal pump and fan loads — quadratic torque curves, sleep/wake functions, and PID setpoint tracking built in. The 40 HP rating at 460 V is the motor output the drive can continuously supply; for a variable-torque load like a pump, the drive holds the unit on the grid across the full speed range without derating, provided the motor FLA stays within the drive's rated output current.
Integration notes
Mount the FRN040F1S-4DY in a clean, ventilated enclosure with clearance above and below for convection airflow — the pump-duty profile runs continuous at rated load, so thermal management is the long-term reliability driver. The 40 HP output at 460 V three-phase means the input feeder and motor cable must be sized for the drive's full-load amps; consult the nameplate for the exact FLA rating before selecting branch-circuit protection. For PID control of pump discharge pressure or tank level, the built-in PID block accepts a 4-20 mA or 0-10 V feedback signal directly, eliminating the need for an external process controller on simple single-loop applications.