AL2012-0000-0000 Beckhoff
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The Beckhoff AL2012-0000-0000 is part of the AL Linear Motors series and features a continuous force of 400 N and a peak force of 900 N. The motor utilizes 12 coils, operates with a continuous current of 4.30 A, and has a winding resistance of 7.2 Ohms. It also includes a pole pitch of 24 mm and weighs 2.6 kg, with a temperature sensor for thermal monitoring.
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Product Description:
The AL2012-0000-0000 coil unit belongs to the AL Linear Motors series developed by Beckhoff for direct-drive positioning tasks in industrial automation. This primary section converts drive current into linear thrust when paired with a magnet track, eliminating the need for ball screws or belts on gantry, packaging, and assembly machines. The unit measures 80 mm in width, uses a normal winding, and is supplied without connectors so that its leads can be adapted to enclosure requirements. The coil is air-cooled and does not include a water circuit. An integrated PTC 1 kΩ/KTY83-122 sensor reports the winding temperature to the servo drive and supports thermal monitoring during operation.
During continuous duty, the coil draws 4.30 A and generates 400 N of thrust. Its thermal capacity permits a peak current of 13.5 A, raising the force output to 900 N. A pole pitch of 24 mm sets the electrical cycle length and aligns the 12-coil layout with the permanent magnets on the secondary track. Power dissipation is limited to 300 W, while the motor constant is 760 N²/W and expresses the relationship between squared force and power loss. Magnetic attraction toward the iron plate reaches 1,700 N, so the mechanical guidance system must withstand that preload. The matching magnetic plate adds 3.8 kg for each meter of travel, while the moving coil weighs 2.6 kg to help limit inertia on high-speed axes.
An installation air gap of 0.5 mm must be maintained for repeatable force production. Thermal behavior is supported by a thermal resistance of 0.24 °C/W and a thermal time constant of 77 s, which indicate how quickly the winding temperature responds after a load change. Electrical behavior is governed by a winding inductance of 54 mH and a winding resistance of 7.2 Ω. These electrical values affect the drive’s current loop and the voltage required during acceleration. Unobstructed airflow across the coil surface is necessary to keep continuous power dissipation and winding temperature within their permitted limits.
