Product Description:

The AX8118-0100-0000 is a single-axis digital servo drive produced by Beckhoff and positioned within the AX Digital Servo Drives series. Designed for closed-loop control of synchronous or induction servomotors, it converts three-phase mains power into a regulated output that matches torque, speed, and position commands issued by Beckhoff TwinCAT or other motion controllers. In automated machinery, the unit serves as the power stage that translates commanded trajectories into motor motion. Its single-axis format makes it suitable for compact machine sections that require precise response from one dedicated drive channel.

During continuous operation, the drive draws 530 mA from its 24 V control supply to power logic, relays, and cooling fans. When the switching frequency is 16 kHz, its power stage can deliver a nominal phase current of 9 A, while at an 8 kHz pulse-width-modulation rate the rating increases to 18 A. This adjustment allows the application to balance acoustic noise against dynamic torque density. The internal modulator supports output frequencies up to 599 Hz, which supports high-pole servomotors at elevated mechanical speeds. Thermal losses are limited to 12 W under base load, helping simplify cabinet heat removal. A dedicated brake terminal supplies 2 A for holding brakes, and the OCT / EnDat 3 feedback port passes high-resolution position data to the drive processor.

For short acceleration bursts, the current loop permits 40 A at 400 VAC or 36 A at 480 VAC, giving headroom to overcome static friction or process shocks without triggering overcurrent trips. Energy released during deceleration is absorbed by a DC link that includes 405 µF of film capacitance, which smooths voltage excursions and helps protect neighboring axes on the common DC bus. Functional safety is integrated through the TwinSAFE STO/SS1 channel, enabling rapid torque-off or safe stop without external contactors. The housing measures 230 mm × 90 mm × 192 mm and weighs 2.5 kg, permitting multi-axis mounting inside standard 300 mm-deep control enclosures.