Drive for pump and fan loads
The Fuji FRN003F1S-4DY is a FRENIC-ECO Pump (F1-DY) drive rated for 3 HP at 460 V, three-phase input. It is designed for variable-torque applications like centrifugal pumps and fans, where energy savings and flow control are the main goals. The F1-DY firmware includes pump-specific features such as PID sleep/wake and multi-pump cascade logic, so it handles lead-lag sequencing without an external controller.
The 3 HP / 460 V rating is the motor output capability under constant-torque conditions. For pump duty, the drive can typically deliver rated current continuously, and the F1-DY firmware includes a V/Hz pattern optimized for centrifugal loads. The 3-phase input means it requires a three-phase supply — not a single-phase feed. If the motor nameplate matches 3 HP at 460 V, this drive is a direct fit, no derating needed.