COMPONENTS: Compact Servo Motors

Three overall lengths cover a torque range from 0.22 to 0.55 Nm

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The new AM801x and AM811x servomotors from Beckhoff Automation offer a low rotor moment of inertia as well as quadruple overload capacity. Three overall lengths cover a torque range from 0.22 to 0.55 Nm, enabling the implementation of highly dynamic, yet exceptionally compact drive solutions.

A space-saving design makes the servomotors ideal for machines with fast cycle changes small footprints. The new motor types differ in their rated voltage, among other factors. An extremely compact and economical EtherCAT servo system can be implemented simply by combining the AM811x motors with EL7201-0010 and EL7211-0010 servomotor I/O terminals from Beckhoff, providing 2.8 ARMS and up to 4.5 ARMS respectively, at 50 VDC.

Due to the multi-turn absolute encoder integrated in the AM801x and AM811x motors, the absolute position of the drive is immediately known when switching the axis on, making homing functions unnecessary. Thus, the system can be started without reference drives to the end positions. Not only can the position of the axis be determined in this way, but also the current displacement speed. The drive position is stored in an EEPROM without battery buffering.

With these features, the new motors are ideally suited for feed and traversing axes, since limit switches and additional encoders are not required. The compact AM8000 series servomotors can also be rapidly and reliably identified in plant networks, thanks to the electronic type plate that contains mechanically and electronically relevant data such as serial number, type, and manufacturer’s data. Integrated error memory also enables on-line diagnostics in the motors.