The Fuji FRN0018G2S-4GU is a FRENIC-Eco series variable frequency drive rated for 10 hp output at 16.5 A, fed from a three-phase 380-480V AC supply (+10% / -15%). It uses variable frequency control and is built for HVAC variable-torque applications, delivering 50% starting torque and 50% torque at 1 Hz. The NEMA 1 open enclosure keeps it suitable for panel mounting in conditioned indoor spaces.
The 16.5 A maximum output current and 10 hp rating define the motor frame size this drive can handle — match it to a 10 hp motor on a 460V line. The 0.1 to 120 Hz output frequency range covers standard induction motor speeds up to 3600 RPM (4-pole). Input voltage tolerance of +10% / -15% means it holds regulation through typical line sags without dropping out. The NEMA 1 enclosure is drip-proof but not dust-tight; plan for a clean, dry panel environment. Built-in protections include drive and motor thermal overload, overvoltage, undervoltage, phase failure, and phase-to-phase or phase-to-ground short circuit. Dynamic braking is supported, though a brake chopper is not included internally — you will need an external braking resistor and possibly a chopper module for overhauling loads.
I/O and control
The drive provides 7 digital inputs, 3 analog inputs, 5 digital outputs, and 2 analog outputs — enough for basic HVAC sequencing and feedback without an expansion card. Control is via the keypad with an LCD/LED display showing motor speed, alarm codes, output frequency, output current, and output voltage, or via remote contact closure. No Ethernet port is included, so network integration requires an optional communication card.