Product Description:

The AL2003-0001-0001 coil unit is manufactured by Beckhoff for the AL Linear Motors series. As a component in the linear servo motor product range, it converts drive current directly into linear thrust along a magnet track, eliminating the need for mechanical transmissions. Within an automation cell, the coil mates with a ferromagnetic secondary rail and is commanded by a Beckhoff drive controller, providing a modular axis for pick-and-place stations where space limitations favor contact-free actuation.

Under continuous duty, the coil draws 2.28 A and produces a sustained thrust of 75 N while releasing 90 W of heat that must be removed through the mounting structure. The three-phase speed winding has a self-inductance of 60 mH and a resistance of 7.8 Ω, so the associated inverter must supply adequate voltage during rapid current changes. A motor constant of 185 N²/W indicates the electrical-to-mechanical conversion efficiency, and the coil’s 0.9 kg mass limits moving inertia. Natural convection is the only cooling method because the unit is supplied without water cooling. Power and feedback signals are routed through M23 and D-Sub connectors. The winding set contains three coils arranged in a speed-optimized pattern that aligns with matched Beckhoff magnet segments.

For dynamic moves, the coil accepts a peak current of 6.5 A and delivers up to 225 N of short-term thrust during acceleration. The generated back EMF has a voltage constant of 26.87 V/m/s, so the drive bus voltage must increase with the target speed. Magnetic attraction to the track reaches 500 N, and the 24 mm pole pitch establishes the required commutation timing. The unit has a thermal resistance of 0.96 °C/W, which helps users account for winding temperature increases under load. The coil body measures 80 mm across, allowing it to fit within common cable-chain widths. A power constant of 46.5 N/A links commanded current to force for feedforward control.