22.F4.C0R-2421 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 22.F4.C0R-2421 is part of the F4 Combivert Frequency Inverters series and has a maximum motor rating of 55 kW with a nominal output current of 115 Amps. This inverter features a protection system rated at IP20, supports analog setpoint input of ±10 V, and offers programmable digital inputs. It operates on a 400 V-Class supply and provides a fieldbus option for InterBus connectivity.
Internal Product Review
The 22.F4.C0R-2421 is a KEB F4 Combivert frequency inverter designed for DC input applications in the 400 V class. An output nominal current of 115 A and max motor rating of 55 kW support dependable performance on demanding motor loads. IP20 protection and InterBus connectivity add practical value for panel-based industrial systems, making the unit a strong choice for high-capacity drive service.
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Product Description:
The 22.F4.C0R-2421 frequency inverter is manufactured by KEB as part of the F4 Combivert Frequency Inverters series. Built for DC-link supplies, it belongs to the 400 V class and converts DC energy into an adjustable three-phase output for compatible motors. In automated material-handling cells or process systems, the inverter allows a controller to adjust motor torque and speed according to real-time load requirements, reducing energy consumption and mechanical stress. This variable-speed operation also supports controlled acceleration and deceleration in machinery that experiences changing production demands.
The control side accepts a differential analog command of ±10 V, buffered by an input resistance of 40 kΩ to protect upstream signal sources from excessive loading. Four programmable digital inputs supplement the analog channel and can be assigned to functions such as starting, stopping, or selecting preset values. An integral relay can switch 30 VDC at 1 A for status signaling to external control equipment. Power processing is handled by an IGBT bridge that delivers up to 80 kVA of apparent power and a nominal output current of 115 A. Conduction and switching losses are moderated through operation at a carrier frequency of 4 kHz. To accommodate heavy-gauge feeders, the terminal block accepts power conductors with a cross-sectional area of 50 mm². Shielded motor cables may extend up to 50 m while remaining within the permitted cable-length limit.
For larger machinery, the inverter can control motors rated up to 55 kW. Short process surges are supported because the output stage tolerates 172.5 A for limited intervals. The overcurrent trip threshold is 207 A, protecting the power stage when phase current reaches that level. The enclosure has an IP20 protection rating, so the unit requires installation inside a clean control panel that prevents exposure to moisture and small contaminants. A built-in InterBus interface provides cyclic fieldbus communication with the main PLC. This connection allows the controller to send operating commands, adjust available parameters, and receive inverter status or fault information through the automation network.
