Product Description:

The AX2070-AS is a digital servo drive produced by Beckhoff as part of the AX Digital Servo Drives series. It converts three-phase mains power into regulated motor currents, allowing precise velocity, torque, and position control for rotary and linear axes in packaging, assembly, and material-handling machines. The drive interfaces directly with EtherCAT motion controllers, so real-time setpoints, diagnostics, and operating data are exchanged over a single high-speed bus. This arrangement supports coordinated axis control without requiring separate command wiring for each function.

On the analog interface, the controller presents an input impedance of 20 kOhm, which helps minimize loading on connected transducers, and each conversion step is only 1.25 mV to support fine signal changes. Command outputs use a 10-bit format together with a 2.2 kOhm driver, which is suitable for reference signals sent to related control hardware. Torque-producing current is modulated at an output stage clock of 8 kHz, which helps limit ripple in the motor windings. When supplied from 400 VAC mains, the inverter can deliver a continuous phase current of 80 Arms. Internal semiconductor and conductor losses reach 700 W at that operating point, so the installation requires effective heat removal through panel ventilation or liquid cooling.

Braking energy is returned to the DC link through an integrated chopper rated for 6 kW of continuous regeneration, and a 10 Ω external resistor can be added for occasional higher bursts. The mains feeder should be protected by an 80 AT time-lag fuse selected to match the drive's inrush behavior. The unit can require up to 50 kVA of apparent power per axis, which is relevant when sizing the upstream supply. During standby, it dissipates 40 W, the residual voltage drop to the motor terminals remains within 5 V, the enabling safety relay operates from 24 VDC logic, and the 21 kg enclosure must be supported accordingly in the cabinet.