AX5021-0000 Beckhoff
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The Beckhoff AX5021-0000 is part of the AX Digital Servo Drives series and has a DC link capacitance of 705 microfarads. Its maximum DC link voltage is 890 V DC and it features an internal continuous brake power of 150 W with a peak of 14 kW. The drive measures 92 mm wide, 274 mm high without plugs, and 232 mm deep without connectors.
Internal Product Review
The AX5021-0000 is a Beckhoff digital servo drive with 705 µF DC link capacitance and an 890 V DC maximum DC link voltage. Braking performance is especially strong, with 32 kW external peak brake power and 14 kW internal peak brake power, making the drive a strong fit for demanding motion-control cabinets.
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Product Description:
The AX5021-0000 is a single-axis digital servo drive produced by Beckhoff within the AX Digital Servo Drives series. The unit converts three-phase mains power into controlled DC link energy and modulates that energy to command synchronous or induction motors in automated machinery. By closing the speed and position loops inside the drive, it relieves the PLC of high-frequency control tasks and supplies regulated current to the motor windings for precise motion in packaging, handling, and machine tool systems. This arrangement lets the higher-level control issue motion commands while the drive manages fast axis response locally.
Energy storage inside the drive is provided by a DC link capacitor rated at 705 µF, and the link can be charged up to a maximum of 890 V DC. For dissipating regenerative energy without external hardware, the integrated brake chopper delivers a continuous dissipation of 150 W and can withstand momentary surges of 14 kW. When the drive itself draws power, thermal design limits total losses to 250 W, a figure used to size cabinet ventilation. These values describe the internal power-handling limits of the drive during acceleration and braking. They also help determine how much enclosure airflow is needed so heat does not build up around nearby components during repeated motion cycles.
Where higher mechanical loads create larger regenerative currents, terminals allow an external brake resistor. The drive continuously diverts up to 6 kW into that resistor and tolerates peaks of 32 kW, provided the element’s resistance is at least 22 Ω. Mechanical installation is compact; the housing measures 92 mm in width, 232 mm in depth without connectors, and 274 mm in height without plugs. This compact footprint supports dense cabinet layouts and leaves room for orderly cable routing. It is also useful in multi-axis panels where repeated deceleration can place additional demand on the braking path.
