38.F5.A1P-90-H KEB
Wake Industrial LLC is not an authorized distributor of this product.
The 38.F5.A1P-90-H is a water-cooled axis drive manufactured by KEB as part of the F5 Combivert Axis Drives series. It supports a motor power of 800 kW with a rated input voltage of 400 VAC and a rated output current of 1450 Amps. This drive features a standard board, braking transistor accessory, a maximum braking current of 380 Amps, and a peak output current of 1813 Amps.
Internal Product Review
The 38.F5.A1P-90-H is a KEB F5 Combivert axis drive built for demanding motion systems, featuring water-cooled construction and a standard control board. Rated for 800 kW motor power and 400 VAC input, the unit offers strong capacity for high-load industrial applications. Integrated braking support with a braking transistor and 380 A max braking current makes the package especially appealing for dynamic drive control.
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Product Description:
The 38.F5.A1P-90-H axis drive module is produced by KEB and supplied within the F5 Combivert Axis Drives series. It regulates three-phase induction or synchronous motors in large-scale industrial automation lines. By converting fixed network power into an output with variable frequency and amplitude, the drive enables closed-loop speed and torque control for high-power machinery such as extruders, rolling mills, and test stands.
The standard control board samples line conditions and controls the IGBT bridge mounted on a water-cooled heat sink. The input section accepts a three-phase supply of 400 VAC, at which the rectifier draws a rated current of 1523 A. The inverter can sustain a continuous output phase current of 1450 A, supporting motors up to 800 kW through two 150 mm² conductors per phase. Power loss is limited to 13.4 kW, and the integrated coolant channels remove the resulting heat to maintain appropriate semiconductor junction temperatures. Fast switching is supported by a voltage rise rate of 8 kV/µs, allowing carrier frequencies up to the rated 2 kHz while keeping the rate of voltage change within insulation limits. The drive can operate with a shielded motor cable up to 100 m long without excessive voltage reflections. The inverter also modulates down to 3 Hz to provide torque at low operating speeds.
For transient loads, the inverter delivers a peak phase current of 1813 A for several seconds before thermal rollback occurs. Hardware protection activates an overcurrent trip at 2175 A to prevent damage to the power stage. The integrated braking transistor diverts surplus energy to an external resistor. With a maximum regenerative current of 380 A, the resistor value must not fall below 2.2 Ω to limit current and heat dissipation. When an application requires a higher dynamic response, the carrier frequency can be increased to a maximum of 4 kHz, although the resulting additional switching loss must be considered. The water-cooled assembly removes this heat and helps keep semiconductor temperatures within safe operating limits at the higher switching frequency.
