20.F4.F3R-4R01 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 20.F4.F3R-4R01 is part of the F4 Combivert Frequency Inverters series and offers a maximum rated motor power of 37 kW. This inverter uses field oriented control and includes integrated filter and braking transistor accessories. It features a protection rating of IP20 and supports operating temperatures from -10 to 45°C.
Internal Product Review
The 20.F4.F3R-4R01 is a KEB COMBIVERT F4 frequency inverter that delivers precise drive behavior with field orientated control. An integrated filter and braking transistor support cleaner installation, while the InterBus fieldbus option helps streamline system integration. IP20 protection and 37 kW rated motor power make this unit a strong choice for demanding industrial drive applications.
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Product Description:
The 20.F4.F3R-4R01 is a three-phase frequency inverter engineered by KEB within the F4 Combivert Frequency Inverters series. Designed to modulate motor speed through voltage and frequency adjustment, the unit converts fixed mains power into a variable output so that induction motors can match load demands in automated conveyors, mixers, and material-handling stations. By acting as an adjustable motor power stage, it removes the need for mechanical throttling devices and enables closed-loop speed and torque regulation through commands from a PLC.
Motor dynamics are handled through field-oriented control, a vector algorithm that separates stator flux from torque-producing current to deliver a rapid response during load changes. For system networking, the drive offers an InterBus interface, allowing the host controller to exchange setpoints, feedback, and diagnostic data over a single two-wire cable. The power section supports motors rated up to 37 kW, making it suitable for medium-sized pumps or process rollers. Operation is supported from -10 to 45 °C, which corresponds to common control-cabinet temperatures. Its IP20 enclosure is intended for indoor mounting where protection against finger contact is required and dripping water is absent.
The drive uses an R-size housing, which provides a consistent frame height and terminal layout for cabinet installation. An integrated filter and braking transistor reduce conducted emissions and direct regenerative energy to an external resistor during rapid deceleration. The inverter can operate at up to 95% relative humidity without condensation, supporting use in humid production areas. The built-in filtering helps control electrical noise on connected power lines, while the braking transistor manages energy returned by the motor. These functions are housed within the inverter, reducing the number of separate components needed for motor control and dynamic braking.
