BECKHOFF AL2000 Linear servomotor - Manual (Page 15)

Technical description
6 Technical description
6.1 Design of the motors
The linear servomotors from the AL2xxx series are brushless three­phase motors for high­quality servo
applications. In conjunction with our digital servo drives they are particularly suitable for positioning tasks in
industrial robots, machine tools, transfer lines, handling equipment, textile machines, packaging machines,
etc. with high requirements for dynamics and stability. The motors from the AL2xxx series are intended to be
operated exclusively by the digital servo drive with speed and torque control.
The linear servomotors are equipped with permanent magnets in the magnetic plate. This advanced
neodymium magnetic material makes a significant contribution to the motors' exceptional dynamic
properties. A three­phase coil supplied by the servo drive is housed in the coil unit. The motor has no
brushes; the commutation being implemented electronically in the servo drive.
Furthermore, a feedback system is necessary for operation. The suitable feedback system must be selected
on the basis of the application requirements. Dynamics, speed, contamination levels, resolution and the
servo drive employed must be considered (see also the section entitled Magnetic Encoder System ﴾MES﴿
﴾optional﴿ [
} 19]).
6.2 General technical data
Climate category 3K3 according to EN 60721
Ambient temperature
(at rated values)
+5 ­ +40 °C for site altitudes up to 1000 m amsl
→ see section entitled Power derating [ } 16]
Permissible humidity
(at rated values)
95% relative humidity, non­condensing
Installation altitude
(currents and torques)
For site altitudes above 1000 m amsl and 40 °C
→ see section entitled Power derating [ } 16]
Technical data → See section entitled Technical data [ } 50]
Linear servomotor AL2xxx 15 Version 4.0