14.F4.F1E-4R04 KEB
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The KEB 14.F4.F1E-4R04 is part of the F4 Combivert Frequency Inverters series and features a field oriented control type and IP20 protection rating. This inverter supports a maximum motor power of 7.5 kW, has a nominal input current of 18.1 A, and weighs 3.5 kg. It comes equipped with a braking transistor and operates with a maximum frequency of 16 kHz.
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Product Description:
The 14.F4.F1E-4R04 is a frequency inverter produced by KEB and supplied within the F4 Combivert Frequency Inverters series. Using field-oriented control, it regulates three-phase induction or synchronous motors for speed and torque tasks found in conveyors, pumps, and general machine automation. The built-in braking transistor accommodates dynamic stopping through an external resistor network, and the compact E-type housing keeps the unit weight at 3.5 kg for straightforward cabinet integration. This arrangement supports compact motion systems that need speed regulation and controlled stopping in one unit.
The inverter draws a nominal input current of 18.1 A and converts this into an output nominal current of 16.5 A, allowing continuous delivery of 11 kVA to the motor terminals. Its internal switching devices are clocked at a rated operating frequency of 8 kHz, and this value can be raised to 16 kHz when lower ripple is required. Stable current conversion also helps the inverter maintain consistent motor response during steady-state operation. Thermal management is limited by a maximum heat sink temperature of 73 °C; exceeding this point reduces life expectancy, so airflow or mounting clearances should be selected accordingly. During normal service the power stage dissipates 240 W, a figure that guides enclosure cooling calculations and overall efficiency estimates.
Short acceleration or deceleration cycles can be supported because the device allows a peak current of 29.7 A for limited periods, while maximum motor power reaches 7.5 kW under suitable operating conditions. Dynamic braking requires an external resistor no smaller than 50 Ω to keep the transistor within its thermal limits. The electronics sit behind a IP20 enclosure, so the installation area must be free of conductive dust and direct liquid exposure. This housing is suited to enclosed panels where airflow and contamination control are managed by the cabinet. A 25 A mains fuse protects the input, and overall losses stay moderate thanks to the field-oriented modulation strategy.
