21.F5.A1R-95-A KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 21.F5.A1R-95-A is part of the F5 Combivert Axis Drives series and features a standard control board. It supports a maximum motor power of 60 HP at 230V and comes equipped with a braking transistor accessory. The drive uses housing form factor code R and has an inverter size code of 21.
Internal Product Review
The 21.F5.A1R-95-A is a KEB axis drive featuring a Standard Board and an integrated braking transistor. A 60 HP motor power rating in size 21 gives the drive strong application range for high-demand machine axes.
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Product Description:
The 21.F5.A1R-95-A belongs to the F5 Combivert Axis Drives series from KEB and functions as a three-phase inverter for single-axis automation. In plant machinery, it converts fixed-frequency mains power into variable-frequency output so that asynchronous or synchronous motors can be accelerated, decelerated, and held at precise speeds. This modulation of voltage and frequency allows the drive to match motor torque to changing process demands in conveyors, production machines, material-handling systems, and other automated equipment. Its standardized drive topology also supports integration across machinery that uses motors with different power requirements.
The unit is equipped with a Standard Board control section that provides the basic I/O, sensor interfaces, and parameter memory needed for closed-loop operation. The drive supports up to 60 HP of motor power when supplied from a 400 V class source, making it suitable for demanding single-axis applications. The enclosure uses form factor code R, which corresponds to a mechanical footprint compatible with KEB cabinet hardware and provides consistent airflow paths for heat dissipation. Within the Combivert sizing system, the drive has inverter size code 21, which corresponds to the output stage capacity, matching choke dimensions, and precharge components used for this power class. These electrical and physical characteristics help determine the required cabinet space, upstream protection, and associated power components.
A built-in braking transistor allows regenerated energy to be routed to an external resistor during rapid deceleration, preventing excessive voltage in the DC link. When powered from 230 V mains, the drive supports up to 60 HP at 230 V for applications that require high torque at a lower line voltage. The control system follows the Combivert F5 architecture, providing a consistent parameter structure and access to compatible fieldbus options. This arrangement supports coordinated communication with higher-level controllers while keeping motor regulation within the drive. The external braking resistor must be selected for the regenerative energy and duty cycle produced by the connected load, while cabinet ventilation must provide sufficient airflow around the enclosure during operation.
