Product Description:

The FC-301P18KT2134L2974 is an AC variable frequency drive produced by Danfoss for the VLT FC 301 Automation Drives series. Designed for industrial automation, the device modulates motor voltage and frequency so conveyors, fans, and pump systems can vary speed without mechanical throttling. By integrating with PLCs through its built-in control terminals, the drive provides electronically adjustable torque that replaces manual dampers and gear changes on standard induction motors.

Its power section is rated for a continuous output of 18.5 kW, which represents the electrical power the inverter can deliver under steady thermal conditions. The same capacity equals 25 HP, giving a direct conversion for mechanical drive sizing. The input bridge accepts a 200–240 VAC three-phase supply, so no step-up transformer is needed on typical low-voltage lines. Under nominal load, the inverter feeds the motor with 74.8 A while maintaining sinusoidal current through PWM switching; higher short-term current is available for rapid acceleration. High-speed applications benefit from a maximum synthesized output frequency of 590 Hz, extending usable motor speed well above the motor’s nameplate rating. Conversion efficiency reaches 0.97, which indicates that only three percent of incoming energy is lost as heat during full-load operation.

Closed-loop regulation is executed with a controller scan time of 1 ms; this fast interval minimizes speed error when dynamic loads are applied. Installation flexibility is supported by a permissible shielded motor-lead length of 50 m, allowing the drive to be mounted remotely inside a control room while the motor remains on the machine frame. The thermal design must accommodate continuous heat dissipation of 740 W, a value used to size cabinet fans or heat exchangers so internal temperatures remain within component limits.