Canada

ISO 13849 – 1 Analysis — Part 8: Fault Exclusion

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This entry is part 9 of 9 in the series How to do a 13849 – 1 ana­lys­is

Fault Con­sid­er­a­tion & Fault Exclu­sion ISO 13849 – 1, Chapter 7 [1, 7] dis­cusses the need for fault con­sid­er­a­tion and fault exclu­sion. Fault con­sid­er­a­tion is the pro­cess of examin­ing the com­pon­ents and sub-sys­tems used in the safety-related part of the con­trol sys­tem (SRP/CS) and mak­ing a list of all the faults that could occur in each one. This a def­in­itely non-trivi­al […]

Canada

ISO 13849 – 1 Analysis — Part 7: Safety-Related Software

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General architecture model of software
This entry is part 7 of 9 in the series How to do a 13849 – 1 ana­lys­is

Safety-Related Soft­ware Up to this point, I have been dis­cuss­ing the basic pro­cesses used for the design of safety-related parts of con­trol sys­tems. The under­ly­ing assump­tion is that these tech­niques apply to the design of hard­ware used for safety pur­poses. The remain­ing ques­tion focuses on the design and devel­op­ment of safety-related soft­ware that runs on that […]

Canada

New CSA Standard for Machinery Electrical Equipment

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Elec­tric­al Equip­ment of Machinery Most mod­ern machinery is con­trolled elec­tric­ally, or elec­tron­ic­ally. There are a num­ber of stand­ards that apply to the design of con­trol sys­tems for machinery, with IEC 60204 – 1 and it’s EN equi­val­ent, along with IEC 61439 – 1 and IEC 61439 – 2 as the pre­dom­in­ant stand­ards inter­na­tion­ally, and NFPA 79 as the pre­dom­in­ant stand­ard in the […]