AX5118-0000-0202 by Beckhoff

Beckhoff manufactures the AX5118-0000-0202 as part of the AX Digital Servo Drives series. This drive converts three-phase line power into controlled motor currents so automation controllers can execute precise torque, speed, and position commands on packaging machines, material-handling axes, and robotics. Integrated logic and fieldbus interfaces let the unit accept motion setpoints directly from the machine PLC while monitoring dynamic feedback to close the loop on motor performance.

The power stage is rated for a nominal motor phase current of 18 A, yet it can supply up to 36 A for short acceleration bursts without leaving its safe operating area. A reinforced DC link stores energy in a capacitance of 1485 µF; this reservoir smooths regenerated power and helps the controller ride through brief line-voltage dips. The link voltage must never exceed 875 VDC, a ceiling that determines the permissible supply configuration and braking strategy. During deceleration, the integrated brake chopper can dissipate 200 W continuously, while additional energy is routed to an external resistor. Control electronics draw 1.1 A from the 24 V service rail, and a separate 1 A sensor supply feeds encoders and switches. Eight digital inputs capture limit, homing, or trigger signals, and output channel 7 can source 0.5 A for status lamps or relays.

The external brake port supports a peak dissipation of 32 kW when paired with a resistor no smaller than 22 ?, allowing rapid stopping of high-inertia loads without overloading the internal hardware. The drive has a power loss of 255 W, which must be considered when sizing cabinet ventilation. The electronics are housed in an enclosure with an IP20 protection rating, so the drive must be installed inside a closed control panel. The unit measures 185 mm in width, 232 mm in depth without connectors, and 317.70 mm in height. These dimensions allow it to fit on standard switchgear shelves that are 300 mm deep.