What if the safety function of the product was related to electrical safety? Again I’ll go to my RCD example. Suppose you have a product that contains multiple subsystems, one of which is an RCD circuit that keeps the overall product/system safe under fault conditions. Is that RCD not providing a safety function and could it not be considered a requirement to evaluate it to 61508? Certainly UL has gone this route in their interpretation of the applicability of UL1998 and UL991, which makes me question how certain we can be that 61508 won’t start to be used for these sorts of product evaluations too.
Jim Eichner, P.Eng. Compliance Engineering Manager Xantrex Technology Inc. phone: (604) 422-2546 mobile: (604) 418-8472 e-mail: [email protected] web: www.xantrex.com <http://www.xantrex.com/> Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. From: [email protected] [mailto:[email protected]] On Behalf Of Amund Westin Sent: Monday, October 27, 2008 9:07 AM To: [email protected] Subject: RE: Functional Safety and the LVD If a standard shall be listed under LVD, it must be electrical safety related. I can’t see that 61508 should be LVD listed, since it deals with HW / SW functional safety. So you can sell a functional safety related product, CE mark it and not make any references to LVD. An example is a flame detector driven by 24VDC. But as an end user in offshore / marine market, it would have been a requirement that the flame detector was tested and verified according to 61508. Regards Amund Westin Oslo, Norway Fra: [email protected] [mailto:[email protected]] På vegne av Jim Eichner Sendt: 27. oktober 2008 16:14 Til: [email protected] Emne: RE: Functional Safety and the LVD Those systems are covered, but there’s nothing that excludes products. Take for example an RCD device. Clearly its function is safety-related. Why wouldn’t the 61508 series be relevant? Jim Eichner, P.Eng. Compliance Engineering Manager Xantrex Technology Inc. e-mail: [email protected] web: www.xantrex.com <http://www.xantrex.com/> Any opinions expressed are those of my invisible friend. Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. From: David Clement [mailto:[email protected]] Sent: Saturday, October 25, 2008 2:12 PM To: Jim Eichner; [email protected] Subject: Re: Functional Safety and the LVD 61508 deals with electrical, electronic and program devices and systems that provide safety such as rail road signaling, safety shut down systems in power plants, machinery interlocks. It has several in depth sections on software that is used in systems that provide functional safety. I don't see it being called out as part of a product safety directive. Dave Clement From: Jim Eichner <[email protected]> To: [email protected] Sent: Friday, October 24, 2008 1:44:53 PM Subject: Functional Safety and the LVD A search of the latest list of standards under the LVD does not turn up any hits on EN61508, yet it would seem natural for this standard to be considered relevant under the LVD. I'm not looking for the added work that would imply, but I do need to know if it's coming. Any thoughts or inside knowledge if this is coming our way? Thanks, Jim Eichner, P.Eng. Compliance Engineering Manager Xantrex Technology Inc. e-mail: [email protected] web: www.xantrex.com Any opinions expressed are those of my invisible friend. Confidentiality Notice: This email message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
