AX5103-0000-0020 by Beckhoff

The AX5103-0000-0020 is a single-axis digital servo drive from Beckhoff in the AX Digital Servo Drives series. Designed for industrial automation, it manages motor torque and speed by rectifying and modulating supply power while dissipating regenerated energy through integrated braking hardware. At rated operation, its 50 W power loss helps limit the cooling requirements for compact control enclosures.

The drive can draw up to 1.2 kVA from a single-phase 230 V line or 2.1 kVA from a three-phase 400 V network, covering common cabinet voltages. A nominal output current of 3 A supports continuous motion, and overloads are handled by a peak current of 7.5 A during short acceleration bursts. The DC link has 235 µF of capacitance and remains below a maximum voltage of 875 VDC. Regenerative energy is absorbed by an internal brake stage that can deliver 50 W continuously and withstand 14 kW during short peaks. An external resistor port is available when an application requires greater thermal capacity. These ratings support axes that require moderate continuous torque and brief increases in current during rapid changes in speed.

The drive provides 8 digital inputs for trigger or limit functions, allowing sensors and machine controls to connect directly to the axis channel. A dedicated brake output can divert up to 15 kW to an external resistor with a minimum resistance of 47 ?. This minimum resistance helps keep surge current within the operating limits of the drive semiconductors and connected wiring. Cabinet installation benefits from the slim 92 mm width, 232 mm depth, and 317.70 mm height. These dimensions allow multiple drives to be mounted side by side without exceeding the depth of many standard control panels. The narrow housing also leaves space for orderly cable routing and access to adjacent devices.