10.F4.S10-1220 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 10.F4.S10-1220 is a frequency inverter from the F4 Combivert Frequency Inverters series. It features a nominal switching frequency of 4 kHz and supports up to 2.2 kW maximum motor power with a maximum short-time current of 18 Amps. The inverter operates with a voltage class of 230 V and provides an output nominal power of 4 kVA.
Internal Product Review
The 10.F4.S10-1220 is a KEB F4 Combivert frequency inverter built for dependable drive control with single-phase input and a 230 V class rating. A 10 A output nominal current and 2.2 kW max motor power give the unit very capable performance for compact industrial motor applications. The 4 kHz nominal switching frequency is a strong finishing detail for smooth and efficient inverter operation.
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Product Description:
The 10.F4.S10-1220 frequency inverter is produced by KEB for the F4 Combivert Frequency Inverters series. The device converts a fixed AC supply into a regulated output whose magnitude and frequency can be varied, allowing closed-loop speed and torque control of small induction motors used in conveyors, pumps, and other light industrial equipment. Its compact chassis mounts inside a control cabinet and interfaces directly with standard line protection gear.
It accepts a single-phase supply, simplifying installation on branch circuits that lack three-phase service. The internal rectifier is rated for a voltage class of 230 V, so the unit connects to common 200–240 V grids without an autotransformer. Once energized, the inverter stage can drive motors up to 2.2 kW. Continuous output capability is 10 A, which equates to an apparent power of 4 kVA at nominal terminal voltage. The IGBT bridge is clocked at a nominal switching frequency of 4 kHz, balancing conduction loss with current ripple suitable for general-purpose machinery. A minimum braking resistor value of 28 Ω is specified to prevent excessive regenerative current, while 68 Ω is identified as the typical component for routine deceleration duty.
The thermal design permits the heat sink to rise to 85 °C before derating occurs, so enclosure airflow must be sized accordingly. Under steady conditions, the electronics dissipate 135 W, a figure that helps calculate cabinet cooling load. For short acceleration intervals, the inverter can supply up to 18 A; if load faults push conduction to 22 A, the drive trips on overcurrent to protect its semiconductors. Brake chopper circuitry monitors resistor temperature as well as the resistance limits mentioned earlier, ensuring safe energy absorption during repeated stops in continuous-duty installations.
