07.F4.S0C-5003 by KEB

The 07.F4.S0C-5003 is a frequency inverter manufactured by KEB and assigned to the F4 Combivert Frequency Inverters series. The device accepts single-phase utility power and synthesizes a three-phase output to regulate induction motor speed in compact machines, ventilation modules, and light-duty conveyor systems. By altering voltage and frequency electronically, the unit can replace mechanical throttling methods and operate within automated control loops that require accurate motor regulation.

The inverter accepts an input voltage of 180 to 264 VAC and operates on common utility grids at 50/60 Hz, allowing use with a range of power systems without a step-down transformer. Internally, a standard control mode governs the IGBT bridge, while a 2.5 mm² cable cross section and a 20 A line fuse meet the wiring and circuit protection requirements for the single-phase input. Users can program output frequencies from 0 to 409.58 Hz to operate motors above or below their synchronous speed. The converter maintains a continuous output current of 4.0 A. It supports motors rated up to 0.75 kW and delivers 1.6 kVA of apparent power through a three-phase output that varies proportionally with the incoming voltage. The compact design supports installation where available cabinet space is limited.

Transient demands are handled by a peak output current of 8.0 A for periods shorter than 30 seconds. The pulse-width modulation stage switches at a maximum carrier frequency of 8 kHz to reduce acoustic noise and current ripple. Typical conversion losses are limited to 50 W, helping control enclosure temperature within an operating range of -10 to 45 °C. Storage is permitted at temperatures down to -25 °C. The electronics tolerate up to 95% relative humidity without condensation and do not require conformal coating under those conditions. With a board-level protection rating of IP20, the inverter is intended for installation inside a closed control cabinet where forced airflow maintains safe component temperatures during continuous operation.