Drive selection memo
The Fuji Electric FRN0041G2S-4GU is a compact/heat sink style VFD from the FRN series, rated for 25 hp continuous output at 37 A (380-480 VAC three-phase input). It delivers 200% starting torque, making it suitable for high-inertia loads like conveyors or crushers that need a hard breakaway. Output frequency spans 0 to 500 Hz, so it can run standard induction motors or higher-speed spindles without a separate drive.
What the ratings mean for fit
The 37 A output current at 460 VAC corresponds to a 25 hp motor — match this to your motor nameplate FLA; oversizing by one frame is common for constant-torque loads. The 200% starting torque (for 60 seconds, typical of the FRN series) means it handles momentary overloads without tripping, but verify the duty cycle if your process cycles near full load repeatedly. IP20 enclosure suits clean, indoor panel mounting; no washdown or dust protection, so keep it out of wet or gritty areas. Input voltage range 380-480 VAC covers most global 400 V and 480 V networks; line reactors are recommended if the supply is weak or has harmonic distortion. The drive includes an Ethernet port for networked control — handy for PLC integration over Modbus TCP/IP without an extra option card.
I/O and control
The FRN0041G2S-4GU provides 3 analog inputs and 11 digital inputs, plus 3 analog outputs and 6 digital outputs — enough for basic speed reference, start/stop, and feedback loops without an expansion module. The LCD/LED keypad gives local readout of motor speed, output current, frequency, and voltage. For remote operation, the Ethernet port handles the network connection; the keypad can be locked out via the stop key to prevent unauthorized stops.
Compliance and approvals
Listed to UL 508C (power conversion equipment) and CSA C22.2 No.14, plus EN 61800-5-1:2007 for adjustable speed drives. These certifications cover the drive for North American and European industrial installations. No RoHS or REACH statement is in the record, but Fuji Electric typically complies for EU markets — verify with the factory if documentation is needed for a specific compliance gate.