Product Description:

The 16.F4.F1G-M440 is a frequency inverter produced by KEB within the F4 Combivert Frequency Inverters series. As an AC drive, it converts fixed-frequency mains power into a variable output that can be matched to a motor’s torque requirements, enabling closed-loop speed and position control in automated machinery. Its field-oriented control algorithm regulates stator current vectors in real time, and the integrated braking transistor dissipates regenerative energy during rapid deceleration cycles. This control method helps the drive respond smoothly to changing loads and speed commands in automated equipment.

This model accepts a three-phase supply of 305-500 V AC and draws a nominal input of 36.5 A, so feeder conductors sized to the 10 mm² line cross section are adequate for continuous duty. Upstream circuit protection can use a 50 A mains fuse, which covers worst-case fault currents while staying below the drive’s semiconductor limits. The inverter synthesizes an output frequency range of 0–409.58 Hz, allowing standard four-pole induction motors to run from zero speed to well above base frequency while maintaining vector accuracy. At the rated point it can deliver 23 kVA to the motor terminals, which reflects the combination of output current and voltage seen by the connected motor and cabling. An operating envelope of -10 to 45 °C supports cabinet installations next to other heat-generating control gear without forced cooling.

When paired with motors up to 15 kW, the inverter’s flux-vector regulation keeps slip minimal, improving efficiency over scalar V/Hz drives. The housing has a rating of IP20, so live parts are finger-safe and the G-type unit can be mounted inside a protected enclosure with natural convection. Up to 100 m of shielded motor cable may be routed before capacitive leakage begins to affect the drive’s IGBT switching pattern, which simplifies long-axis machine layouts. A storage temperature span of -25 to 70 °C permits the unit to be stored as a spare without climate-controlled warehousing.