EtherCAT-based Highly Dynamic Multi-axis Servo System

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Design to support oversampling technology


The compact AX8000 multi-axis servo system now also supports the oversampling technology familiar from EtherCAT Terminals.
The compact AX8000 multi-axis servo system now also supports the oversampling technology familiar from EtherCAT Terminals.
The AX8000 multi-axis servo system from Beckhoff
The AX8000 multi-axis servo system from Beckhoff

Beckhoff introduced the AX8000 as a high-performance multi-axis servo system characterized by extremely high dynamics and very short cycle times. The motor current is scanned in μs cycles and the minimum adjustable EtherCAT cycle time is 62.5 μs. Thanks to oversampling technology, process data can now even be scanned several times within a communication cycle if required and transferred to the controller via EtherCAT.

Shortest control cycles now combined with multiple sampling per communication cycle

New setpoint values can be transferred every 62.5 μs from the motion controller in the Industrial PC to the servo drive. The AX8000 firmware additionally supports oversampling technology familiar from Beckhoff EtherCAT I/Os, enabling multiple sampling of process data within a communication cycle with an oversampling factor of up to 128 and the transfer of all data in an array via EtherCAT. This enables the higher-level controller to transmit several setpoint positions or speeds to the drive within one communication cycle, which the drive then follows. 

Synchronization with other drives – with or without oversampling functionality – is possible without any problems through the distributed clocks function of the EtherCAT system

In addition, measured variables can be recorded several times in the drive and the buffered values can be made available to the controller within one cycle. A chart in TwinCAT Scope View can be resolved even more finely, for example. The oversampling method is used in precision processing machines and in other machines and systems for which the evaluation of high-resolution measured values is a technological requirement.

Posted on September 7, 2020 - (461 views)
Beckhoff Automation GmbH
Hülshorstweg 20
33415 Verl - Germany
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EtherCAT-based Highly Dynamic Multi-axis Servo System

Design to support oversampling technology

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