26.F5.A1U-91-A KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 26.F5.A1U-91-A is an axis drive from the F5 Combivert Axis Drives series. It features a standard control board and is designed for a maximum motor power of 175 horsepower at 480V. The drive comes equipped with a braking transistor and is housed in form factor code U.
Internal Product Review
The 26.F5.A1U-91-A is a KEB Combivert F5 axis drive configured with a standard board and braking transistor. Rated for 175 HP at 480 V, the drive stands out as a capable solution for high-demand motor control.
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Product Description:
The 26.F5.A1U-91-A is an axis drive developed by KEB for automated machinery. It provides closed-loop control of three-phase induction or synchronous motors used in demanding motion applications. The unit converts fixed-frequency mains power into a variable-frequency output that regulates motor operation. This conversion allows a PLC or motion controller to command speed, direction, and torque for conveyors, winding equipment, large pumps, extruders, and high-inertia positioning systems.
This model is fitted with a standard board, so its internal I/O and fieldbus interfaces use the baseline signal layout without optional extensions. When operated on a 480 V network, it can energize motors rated up to 175 HP, providing the continuous power needed for large industrial loads. The drive uses a U housing with a rectangular form that fits compatible cabinet hardware and maintains the clearances required for forced-air cooling. A factory-mounted braking transistor routes regenerative energy to an external braking resistor, helping prevent DC-bus overvoltage during rapid deceleration or operation with an overhauling load. The integrated control board manages current loops, fault diagnostics, and vector-control algorithms in real time. It also supports sensorless vector operation, encoder feedback, and torque limiting through a consistent parameter menu.
The drive has inverter size 26, which corresponds to the frame dimensions, airflow needs, and power-terminal spacing used by other F5 units of the same size. Its place within the Combivert F5 architecture makes it suitable for applications that require dynamic motor control and external resistor braking without additional option cards. The standardized axis-drive arrangement allows a machine design to use different power ratings and enclosure sizes while retaining a familiar control layout. Shared parameter organization also supports consistent setup across coordinated axes, while the baseline interface arrangement keeps external control connections straightforward. Forced-air cooling removes heat from the power electronics during sustained operation, and the housing provides the internal spacing needed for the corresponding airflow path.
