AX2003 by Beckhoff

The AX2003 is a digital servo drive manufactured by Beckhoff within the AX Digital Servo Drives series. It supplies regulated AC power to matched servo motors, allowing closed-loop velocity and position control in automated machinery such as packaging stations, gantry axes, and material-handling modules. The unit integrates drive electronics, safety relays, and regeneration hardware so a controller can command precise motor torque without external power stages.

The BTB/RTO relay can switch up to 500 mA, enabling direct interfacing with emergency-stop or ready-to-operate chains. Under continuous loading, the power section produces 40 W of thermal dissipation that must be removed by cabinet airflow. Normal motion cycles draw a rated phase current of 3 A RMS, while acceleration events can reach a peak current of 6 A RMS for short durations. These currents correspond to an installed load of 2 kVA, so line protection devices must be sized accordingly. Compatible motors must have an inductance from 12 mH to 75 mH; operation within this range keeps current ripple near the stated form factor of 1.01. The residual 5 V drop across the output stage leaves usable headroom for motor back EMF, and an input resistance of 20 k? relative to AGND helps prevent ground-loop currents when analog references are connected.

The internal brake chopper can absorb up to 80 W of regenerated power, allowing deceleration without external resistors when inertia is moderate. The electronics consume 15 W of quiescent power while off, so enclosure temperature calculations should include that baseline. The housing has a width of 100 mm, a height of 275 mm, and a depth of 265 mm, allowing side-by-side mounting on a TS35 DIN rail. The drive has a mass of 5 kg, and the enclosure must provide sufficient support for secure mounting. Space must also be reserved for the recommended rear convection channels around the aluminum heat sink.