Independent motion control solution launched

PLCopen Safe Motion 1.0 is a system independent solution designed to ensure that safety drive functionalities can be mapped easily and the gap between motion and safety is filled.

07/30/2017


PLCopen Safe Motion 1.0 is a system independent solution designed to ensure that safety drive functionalities can be mapped easily and the gap between motion and safety is filled. The introduction of safety approved networks makes the control of drives and motion more and more a software item; hard-wired systems are replaced by software commands over networked systems.

PLCopen Safe Motion 1.0 is a system independent solution designed to ensure that safety drive functionalities can be mapped easily and the gap between motion and safety is filled. Courtesy: PLCopenThis is also pushed by initiatives like Industrie 4.0 to create more flexibility preferably at the same quality and price levels. However, the different networks come with different solutions, which create problems for the users, especially in production environments with heterogeneous networks.

PLCopen started a working group on safe motion, which created a generic proposal to solve the motion control safety aspects over the different networks like ProfiSafe, Safety over Ethercat, CIP Safety over Sercos, OpenSafety, CC-Link IE and Mechatrolink, as well as user area's as described in OMAC.

There are also many safe motion related commands, and it makes no sense that a function block is created for all of them while the functionality is mostly the same.

This new solution is based on an existing functionality as already specified in PLCopen Safety: SF_SafetyRequest. With this, most of the safety drive functionalities can be mapped easily. It provides a "guideline" with defined naming conventions, containing a generic scheme how to name signals related to the functions supported by a safety drive. Combined with an I/O or drive configurator, these names can be generated automatically for the bits in the drive's status/control word, matching the drive's profile (symbolic names). This proposal is based on the architecture that the safety functionality is in the drive, including all relevant parameters.

This work is a continuation of the PLCopen Motion and PLCopen Safety activities, which both resulted in a suite of specifications. Inside these published specifications the safety aspects around motion have been described only partially. This new document fills this gap.

This article originally appeared on PLCopen. PLCopen is a CFE Media content partner. Edited by Carly Marchal, content specialist, CFE Media, cmarchal@cfemedia.com. 



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