The Fuji FRN001F1S-4DY is a Frenic-Eco Pump (F1-DY) series variable frequency drive rated for 1 HP on a 3-phase 460 VAC supply. It is designed for pump applications, with the F1-DY firmware tuned for centrifugal load curves — no external PID controller needed for basic pressure or flow regulation.
The 1 HP / 460 V rating defines the maximum continuous motor load this drive can handle. For a 460 V three-phase supply, that corresponds to roughly 1.7 A output current per the standard NEC table for 1 HP induction motors. If your BOM calls for a 1 HP pump motor on 460 V, this drive matches the nameplate. Oversizing to the next frame (2 HP) would be required if the motor draws starting current above the drive's rated output, but for a standard centrifugal pump the 1 HP rating is sufficient. The F1-DY firmware variant includes built-in pump-specific functions: flow compensation, sleep/ wake cycling for dry-run protection, and a PID loop tuned for pressure control. This saves an external controller and simplifies the panel wiring.
The 1 HP frame size keeps the footprint compact — typically 140 mm wide by 200 mm tall — so it fits in a small control enclosure alongside a motor starter or contactor. Verify clearance above and below for airflow; the drive's heatsink requires free convection.
Sourcing posture
No last-time-buy or surplus-channel sourcing is needed. Provide the BOM line quantity and target delivery window, and we will confirm lead time from Fuji's distribution network.