Machinery Safety 101

Do you use ISO 13849 or IEC 62061? We need to hear from you! UPDATED

Do you use ISO 13849 – 1 or IEC 62061 to define and ana­lyze the safety related parts of the con­trol sys­tems used on your machinery? Have you been frus­trated by try­ing to… 

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31-Dec-2011 – Are YOU ready?

This entry is part 8 of 8 in the series Cir­cuit Archi­tec­tures Explored

31-Decem­ber-2011 marks a key mile­stone for machine build­ers mar­ket­ing their products in the European Uni­on, the EEA and many of the Can­did­ate States. Func­tion­al Safety takes a pos­it­ive step for­ward with the… 

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Interlock Architectures – Pt. 5: Category 4 – Control Reliable

This entry is part 5 of 8 in the series Cir­cuit Archi­tec­tures Explored

Ed. note: I’ve made a few updates to this art­icle since it was first pub­lished in 2011, with the most recent on 2020-05-11. – DN – The most reli­able of the five… 

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Interlock Architectures – Pt. 4: Category 3 – Control Reliable

Category 3 Architecture Logic Block Diagram
This entry is part 4 of 8 in the series Cir­cuit Archi­tec­tures Explored

This post was updated on 2020-03-28. Cat­egory 3 sys­tem archi­tec­ture is the first cat­egory that could be con­sidered to have sim­il­ar­ity to “Con­trol Reli­able” cir­cuits or sys­tems as was defined in… 

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Understanding Risk Assessment

A group surrounding a computer discussing a problem.
This entry is part 10 of 9 in the series Risk Assess­ment

When people dis­cuss ‘Risk’ there are a lot of dif­fer­ent assump­tions made about what that means. For me, the study of risk and risk assess­ment tech­niques star­ted in 1995. As a technologist… 

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Missing MTTFd data

Deal­ing with the huge inform­a­tion void that exists while try­ing to com­plete reas­on­able con­trol reli­ab­il­ity assess­ments is a major chal­lenge for every engin­eer or tech­no­lo­gist tasked with this activ­ity. Here are a few thoughts on what to do now, and where things may be going…

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IEC/TR 62061 – 1 Reviewed

This entry is part 2 of 2 in the series IEC/TR 62061 – 1

Why You Need to Spend More Cash on Yet Anoth­er Doc­u­ment Stand­ards organ­iz­a­tions pub­lish doc­u­ments in a fairly con­tinu­ous stream, so for those of us tasked with stay­ing cur­rent with a large… 

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Interlock Architectures – Pt. 3: Category 2

ISO 13849-1 Figure 10
This entry is part 3 of 8 in the series Cir­cuit Archi­tec­tures Explored

This art­icle explores the require­ments for safety related con­trol sys­tems meet­ing ISO 13849 – 1 Cat­egory 2 require­ments. “Gotcha!” points in the defin­i­tion are high­lighted to help design­ers avoid this com­mon pitfalls.

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New Guide to Applying ISO 13849 – 1 and IEC 62061

This entry is part 1 of 2 in the series IEC/TR 62061 – 1

IEC and ISO have pub­lished a new guide to help users select between ISO 13849 – 1 and IEC 62061. This new Tech­nic­al Report will replace Table 1 in both standards.

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Safety is Good Business

In this excel­lent art­icle from Rock­well Auto­ma­tion’s The Journ­al, Mike Miller and Wayne Sol­berg explain how EN ISO 13849 – 1 and EN IEC 62061 mesh for machine builders. 

Well worth the read in my opinion! 

The Journ­al: Safety is Good Busi­ness – Mar­shall & Solberg