Beckhoff Automation GmbH (Germany) - Dynamic servomotors for the smallest installation spaces.

Beckhoff is adding the new flange size F1 with a 40 mm edge length to the AM8000 Servomotor series. Three overall lengths cover a torque range from 0.22 to 0.55 Nm, enabling highly dynamic drive solutions to be implemented with minimised space requirements.

The new AM801x and AM811x servomotors offer a low rotor moment of inertia as well as quadruple overload capacity and therefore meet the highest requirements for motion dynamics even in the smallest of installation spaces. This makes them ideal, for example, for applications with fast cycle changes. The two series differ among other things in their rated voltage. An extremely compact and economical servo system can be implemented by combining the AM811x motors with the EL7201-0010 and EL7211-0010 servomotor terminals, with 2.8 ARMS and up to 4.5 ARMS respectively, at 50 V DC. The AX5000 EtherCAT servo drive (1/2 canal, up to 3 A) can be used to control the AM801x servomotors, which are designed for 230 V AC.

Optionally, the motors are available with backlash-free permanent magnet holding brake or feather key groove. To offer maximum motor performance in a compact size, the motors are equipped with an absolute encoder and One Cable Technology (OCT). With OCT motor supply and position feedback signal are transmitted via just one cable, significantly reducing the costs for components and installation. On request the motors are available with multi-turn absolute encoders.

Three integrated user benefits:
Thanks to the multi-turn absolute encoder integrated in the AM801x and AM811x motors, the absolute position of the drive is known when switching the axis on, making a homing function unnecessary. Thus the system can be started without reference drives to the end positions. In addition, not only can the position of the axis be determined, but also the current displacement speed. The drive position is stored in an EEPROM without battery buffering. With these features the new motor is ideally suited to feed and traversing axes, since limit switches and additional encoders are not required.

The new compact motors can also be rapidly and reliably identified in plant networks thanks to the electronic type plate containing mechanically and electronically relevant data such as serial number, type and manufacturer’s data. The integrated error memory enables on-line diagnostics into the motor.

Moreover, safe drive functions can be implemented very simply even in the smallest of installation spaces using the AM801x servomotors in conjunction with the AX5805 TwinSAFE Option Card. This not only enables traversing and feed axes to be switched off safely, but also programming including safe motion functions according to EN ISO 13849-1 to PLe. The motors can be switched torque-free and monitored in terms of speed, position and direction of rotation. Thus, traversing and feed axes can now also be integrated into the TwinCAT system, which considerably increases the availability of the entire machine.