Product Description:

The AX2516-B750 is a dual-axis servo drive manufactured by Beckhoff within the AX Digital Servo Drives series. It functions as the power interface between a machine controller and the servomotors it commands, generating three-phase voltage waveforms so that industrial axes can accelerate, position, and hold loads with high precision. By integrating into EtherCAT networks, the unit helps synchronize motion sequences across conveyors, gantries, and robotic stages in automated cells.

The drive processes analog command signals with a resolution of 14 bits, allowing fine torque or speed reference steps. Its input circuit presents 20 kΩ of resistance, minimizing current draw from upstream control hardware, and it tolerates differential swings up to ±10 V without clipping. Internally, pulse-width modulation runs at a carrier frequency of 8 kHz, which is the rate at which the inverter segments DC-link energy into motor-phase pulses. Status information is provided through optically isolated digital outputs rated for 30 V DC at 10 mA, while protective feedback is offered by Btb/RTO contacts that can switch 30 V DC or 42 V AC at 500 mA. Compatible motors can have load inductances ranging from 7.5 mH to 40 mH, and the electronics dissipate 15 W when idle and 60 W under nominal load. The enclosure carries an IP20 rating, so it is intended for installation inside a control cabinet with filtered airflow.

The power channel supplies a continuous phase current of 6 A rms and can deliver up to 12 A rms for short acceleration bursts, letting connected motors overcome friction or inertial peaks. With a maximum installed load of 12 kVA, the device fits medium-sized axes such as feeders or small spindles. An overvoltage threshold of 750 V disconnects the DC link if regenerative energy drives the bus above safe limits, protecting semiconductors and capacitors. Brake coils on vertically oriented axes can be powered directly by the integrated 1.5 A holding-brake supply, eliminating the need for separate relays.