Wachendorff WDGA Series, Техническое руководство

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Technical Manual
WDGA with EtherCAT
3 - Description of the equipment
© Wachendorff Automation GmbH & Co. KG 7 Rev.1.09
3 Description of the equipment
3.1 General
There are various mechanical versions of the WDGA series with EtherCAT. Crucial in
this context is the design, with or without bus cover, the nature of the flange and the
type of shaft (full or end hollow shaft). The size is specified by the diameter on the
flange at 58 mm. The illustration below shows examples of the WDGA series with
EtherCAT.
Figure 3.1: WDGA with EtherCAT bus cover
The full or end hollow shaft is linked to the revolving part whose angle position or speed
is to be measured. Cable or plug outlets form the interface to the connection to the
EtherCAT network. The status LEDs in the cover indicate the various states of the
encoder during use. They support the configuration of the encoder or troubleshooting
in the field. The flange drill holes or supplied spring plates are used to secure the
encoder to the machine or while in use.
3.2 EtherCAT
EtherCAT is a real-time Ethernet technology that was originally discovered by Beckhoff
Automation. The EtherCAT protocol published in the IEC standard IEC 61158 is
suitable for hard as well as soft real-time requirements in automation technology, in
measuring technology and in a number of other applications.
EtherCAT was unveiled in April 2003 and the EtherCAT Technology Group (ETG) was
founded in November 2003. Meantime, the ETG has grown to become the largest
industrial Ethernet and field bus user organisation in the world. The ETG brings
manufacturers and users together who contribute to the technology's development in
technical working groups.