Integrated safety functions in the Sinumerik drive from Siemens meet the requirements of safety Category 3, compliance with EN 954-1, and are an integral part of the basic system. Additional sensors are not necessary, which reduces machine installation effort and results in a "slimline" control cabinet. The scope of functions supported includes system monitoring at speed and standstill, as well as functions for safe travel range limiting and range detection.
A multi-processor architecture forms a dual-channel, system structure, and safety functions are redundantly integrated in NC, drive and internal PLC. Process variables and safety-relevant system data are cross monitored. Safety functions are available in all operating modes and communicate with the process using input/output signals. For more information on Siemens' Sinumerik drive, go to http://rbi.ims.ca/4930-534.
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
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