Product Description:

The 10.F4.F3D-4019 is a frequency inverter produced by KEB and assigned to the F4 Combivert Frequency Inverters series. It converts fixed three-phase mains energy into variable voltage and frequency output so that induction or synchronous motors can be accelerated, held at process speed, or braked under closed-loop control. Within an automation cell, it bridges the power network and motion hardware, supporting coordinated conveyor sections, pump drives, and general-purpose machinery.

The inverter accepts a three-phase supply between 380–480 V AC and draws up to 6.4 A at the mains terminals under nominal load conditions. It synchronizes with industrial grids operating at 50/60 Hz and uses an internal carrier with a rated operating frequency of 4 kHz for pulse-width modulation. Motor terminals can deliver 5.8 A, corresponding to an apparent output of 4 kVA. Recommended line conductors have a cross-section of 2.5 mm², and the enclosure uses the D housing size, which permits side-by-side mounting in compact panels. Upstream protection is provided by a 20 A time-delay mains fuse, and the heat sink removes switching losses so airflow inside the cabinet remains moderate.

During dynamic deceleration, the drive directs regenerated energy into external resistors, and the connected motor may draw up to 2.2 kW while the internal chopper can switch as much as 15 A of brake current. Safe thermal design requires that the braking resistor value never fall below 82 Ω, and many installations use a 270 Ω element to balance dissipation and space. Overall conversion efficiency is high, leaving only 80 W to be expelled as heat, and the aluminum heat sink is permitted to climb to 85 °C before the output is limited. The unit can continue operating in cabinets with minimal ambient airflow during repeated braking cycles.