Welcome to Safety Sound Bites, your go-to resource for quick insights that keep you a step ahead in functional safety. Think of these as your bite-sized, expert-approved "mini-blog posts." Let’s get started with today’s sound bites on electromagnetic immunity (EMI). To learn more about EMC and EMI, read the full blog post - Getting Serious About Functional Safety & EMC.
Banana Skins
“EMC (electromagnetic compatibility) but especially EMI (electromagnetic immunity) is very important for functional safety. IEC 61508 has EMI mandatory at all SIL. If you ever wondered what kinds of things can go wrong then have a look at the impressive list compiled under the "Banana skins" title and available at See EMI Stories - EMC Standards”
See more information on this post on my LinkedIn account.
EMI Failure
“The attached picture is from a draft standard I was reviewing this week. The note categorizes a failure of an EMI circuit as a safe failure since it has no impact on normal operation. I think I have seen a similar sentiment expressed in a draft of ISO 13849-1. For me a failure that inhibits EMI robustness is a dangerous failure. From a functional safety point of view I consider EMI to be always present. Am I wrong?”
See more information on this post on my LinkedIn account.
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