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Thursday, April 20, 2017
POSTED BY TURTLE & HUGHES INDUSTRIAL CONTROL & AUTOMATION DEPARTMENT BLOG IN
PRODUCTS & TECHNOLOGY
Designing your machinery safety system can sometimes be a confusing and daunting task. An endless number of safety-related products and volumes of standards available may make it seem somewhat intimidating. It’s no wonder some seasoned design engineers, who may not have an in-depth knowledge of these standards, are often challenged with finding a starting point for compliant design.
Contemporary safety standards define a five-step Machine Safety Life Cycle approach for design inclusive of risk assessment, safety requirement specification, verification, validation and maintenance. That is why we often recommend engaging a qualified safety professional, like Rockwell Automation’s TUV Certified Functional Safety Engineers, to help launch the project with a formal risk assessment. For those who prefer a more independent approach, Rockwell Automation also offers instructor-led, TUV certificate and certification levels classes, as well as a suite of safety productivity tools, reference documents and software to help you through the safety design process.
Rockwell Automation’s Safety Automation Builder (SAB) with RASWin, is a software tool that will assist with the design and documentation of machinery safety systems. RASWin, a subscription based software tool, can assist with a safety risk analysis. RASWin will guide the user through the safety lifecycle, and follow either a task or hazard analysis to help define safety function specifications and performance level requirements (PLr) as per the global standard ISO 13849-1. Safety Automation Builder, a free download from the Rockwell Automation website, allows the user to import either a picture or drawing of their machinery. The user can then layout machine hazards, define safety functions, and select which safety products to use to mitigate those hazards, assuming they cannot be designed out.
All of this data can then be exported and evaluated in the Safety Integrity Software Tool for the Evaluation of Machine Applications (SISTEMA). SISTEMA is a software utility that will analyze the safety control circuit and calculate points such as reliability values and performance level (PL). For more information on SISTEMA, click here.
Remember, the most effective safety system designs are passive to those who interface with equipment and are included early in the overall automation strategy. The tools described here are just that, tools; powerful as they are, these tools should not be considered a substitute for an engineer’s working knowledge of contemporary safety standards in a design that is both safe and productive.
If you are interested in learning directly from the experts, register for Rockwell Automation on the Move, May 17-18, at the Hilton Meadowlands, East Rutherford, NJ. There will be 49 free technical sessions and 18 hands-on labs including:
You can read more about these tools, as well as additional machinery safety-related information, on Rockwell Automation’s safety website. For more information on SAB with RASWin, download the product brochure and don’t forget to contact your Turtle & Hughes Automation Specialist with your machinery safety needs.
Turtle & Hughes is an Authorized Distributor of Rockwell Automation in the following areas: New Jersey: Bergen, Essex, Hudson, Hunterdon (East of Route 31), Middlesex, Monmouth, Morris, Ocean, Passaic, Somerset, Sussex and Union. New York City: Bronx, Manhattan and Queens. New York State: Dutchess, Kings, Nassau, Orange, Putnam, Rockland, Suffolk, Sullivan, Ulster (South of Route 28, excluding the township of Kingston) and Westchester.
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