AX5125-0000-0200 by Beckhoff

Beckhoff manufactures the AX5125-0000-0200, a single-axis member of the AX Digital Servo Drives series. The module converts fixed-frequency, three-phase mains power into a pulse-width-modulated output so automation controllers can regulate motor speed, torque, and position across packaging lines, gantries, and material-handling stations. Integrated measurement and protection circuits supervise the DC link, motor feedback, and switching devices to keep the connected axis within safe electrical and thermal limits during continuous or transient operation.

A continuous output capacity of 25 A supplies steady torque, while a momentary ceiling of 50 A supports rapid indexing and emergency moves. The internal bus withstands up to 875 VDC, providing space for regenerative energy before external dissipation is required. When powered from 480 V mains, the apparent power reaches 20.8 kVA, which is suitable for medium-frame synchronous or induction motors. During operation, the electronics release 340 W as heat, so panel ventilation and spacing must accommodate that loss. Drive settings can lower the peak limit to 12 A, allocate the 1 A sensor rail, and map the feedback resolution. Physical dimensions of 317.70 mm in height, 185 mm in width, and 232 mm in depth allow installation inside standard 300 mm enclosures.

The built-in shunt resistor dissipates up to 200 W continuously, while external braking hardware can absorb a maximum of 32 kW during rapid stops without overloading the DC link. The external braking network must not have a resistance below 22 ?, which prevents excessive brake current from tripping the protective IGBTs. Eight assignable digital inputs allow the PLC to trigger brake modes, select motion profiles, or capture fault states without additional interface cards, while the 26 kW peak internal brake rating provides reserve capacity for high-energy emergency decelerations.