Fuji Electric FRN350G1S-4U

Purpose-built for demanding industrial applications where high torque, fast response, and multi-duty flexibility are essential, the Fuji Electric FRN350G1S-4U is a FRENIC-MEGA (G1) series high-performance variable frequency drive (VFD) for 460V three-phase applications, rated at 350 HP / 415A (Light Duty), 350 HP / 415A (Medium Duty), 300 HP / 377A (Heavy Duty).

The FRENIC-MEGA (G1) is Fuji Electric's flagship high-performance drive platform, delivering advanced vector control across a wide speed range. In sensorless vector mode, it achieves up to 150% starting torque at 0.5 Hz without an encoder. Closed-loop vector control with an optional encoder card achieves up to 200% starting torque and ±0.01% speed regulation. Torque control mode is also supported for tension-controlled winding applications.

The built-in PLC function enables simple sequencing and logic directly in the drive, reducing panel component count. Additional features: instantaneous power failure ride-through, multi-duty ratings (Light/Medium/Heavy), DC bus sharing, droop control, S-curve acceleration, and comprehensive diagnostics. RS-485 Modbus RTU standard; optional PROFIBUS-DP, DeviceNet, EtherNet/IP, and CC-Link cards.

High-performance applications for the FRN350G1S-4U include machine tool and machining center spindles, heavy-duty conveyors and material handling, and cranes, hoists, and overhead lifting systems. Its multi-duty rating structure provides maximum application flexibility. UL/cUL listed and CE marked.