Product Description:

KEB’s 15.F4.F1G-M440 is a frequency inverter in the F4 Combivert Frequency Inverters series and is engineered for three-phase AC motor applications in automated machinery. Acting between the mains supply and the motor, it converts fixed-frequency power into a variable output so production lines, packaging cells, and material-handling systems can match motor speed and torque to real-time process requirements while maintaining efficient operation. This arrangement supports controlled motor performance across a wide range of industrial duties without adding unnecessary complexity to the power path.

The drive integrates an integrated brake transistor that dissipates regenerated energy internally, eliminating the need for an external chopper in most deceleration cycles. Vector regulation is supplied through field-oriented control, allowing accurate torque production even at low speeds by independently adjusting flux and magnetizing components. Power is processed with a PWM DC-link topology, which produces a sinusoidal phase voltage from the intermediate circuit and reduces motor heating. A cabinet-friendly IP20 rating protects live parts while still permitting natural convection cooling. Reliable service is available across an ambient range of -10 to 45 °C, and within this band the inverter maintains rated current without derating while meeting EN 61800-3 requirements for industrial environments.

Installation sites covered by climatic category 3K3, which indicates moderate humidity and contaminant levels, fall within the design scope. The compact G housing variant conserves panel space while keeping connection terminals accessible from the front. Operation is permitted up to 2000 m above sea level, so altitude-related cooling reductions do not apply below that threshold. For periods when equipment is stored or shipped, an allowable temperature span of -25 to 70 °C helps prevent condensation damage and preserves component life. This storage range supports transport and warehousing conditions where equipment may pass through unconditioned spaces or transit holds.