AX2503-B750 Beckhoff
Wake Industrial LLC is not an authorized distributor of this product.
The Beckhoff AX2503-B750 is part of the AX Digital Servo Drives series and has a rated output current of 3 Arms with a peak output current of 9 Arms. This drive supports a SERCOS bus interface, is ventilated by free convection, and weighs 3 kg. The unit measures 100 mm in width, 230 mm in height, and 240 mm in depth.
Internal Product Review
The AX2503-B750 is a Beckhoff digital servo drive with a SERCOS bus interface and free-convection ventilation. An 8 kHz output stage clock and 9 Arms peak output current support fast, stable servo response in demanding motion applications. Compact cabinet integration and consistent drive performance make the AX2503-B750 a strong choice for precise multi-axis systems.
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Product Description:
The AX2503-B750 is a single-axis drive controller produced by Beckhoff within the AX Digital Servo Drives series. It communicates with motion controllers over a SERCOS bus and supplies regulated three-phase power to servo and induction motors used in positioning, packaging, and handling equipment. By modulating its IGBT bridge in real time, the unit converts DC link energy into phase-correct currents that enforce commanded torque and velocity profiles in automated machinery. This arrangement lets one module handle current regulation and motor response for a dedicated axis.
During continuous operation, the drive delivers 3 Arms per phase, while a transient reserve of 9 Arms supports rapid acceleration without overheating. An internal signal generator switches the output transistors at 8 kHz, a clock rate that limits current ripple while containing switching losses. Motor windings may present up to 75 mH of inductance, and below 12 mH an external reactor is recommended to maintain current control stability. The control section trips when the DC link surpasses 450 V, preventing semiconductor damage from regenerative energy. A current form factor of 1.01 keeps RMS and average currents nearly identical, and an S1 installed load of 7 kVA indicates the transformer rating needed for uninterrupted duty. Free convection removes heat without fans, so cabinet airflow must carry heat away from the housing and nearby components.
Quiescent dissipation is 12 W for standby electronics, and full-load dissipation is 35 W when rated current flows. The aluminum housing weighs 3 kg. It measures 230 mm in height, 100 mm in width, and 240 mm in depth, allowing dense vertical stacking on DIN rails while preserving the spacing needed for natural convection. The compact enclosure also fits panels where drive hardware must be arranged closely without blocking passive cooling paths.
