In message <07f8089e-0531-408d-aed0-8cd68a772...@conformance.co.uk>,
dated Fri, 21 Nov 2014, Nick Williams <nick.willi...@conformance.co.uk>
writes:
EN 953 is a CEN standard, EN 60950 is an IEC/CENELEC standard and I
doubt the people who wrote the two standards speak to each other much,
if at all.
Very likely.
EN 60950 is really not a good starting place for compliance with the
Machinery Directive (even the electrical safety aspects)
Since it's a standard for IT equipment that mostly has no moving parts
or low-energy mechanical stuff, it's not surprising that it doesn't fit
machines very well.
- if EN 60204-1 won’t tell you what you need to know then for
machine designers the second port of call should be EN 60335-1 (which,
unlike EN 60950, is listed in the OJ under the Machinery Directive).
Because household and commercial appliances very often DO contain
significant 'machinery', not all of it low-energy (e.g. loaded washing
machine drum at 1200 RPM).
IEC 60950 is probably the most globalised of all the safety standards
and so it has to be acceptable to many territories outside of Europe
where there is no local equivalent of the Machinery Directive. I
don’t think you can expect to see it listed in the OJ under the
Machinery Directive any time soon.
For the above reasons; anyway it's being superseded by IEC/EN 62368-1.
One key message that people who come from an electrical apparatus
background need to understand when they start dealing with the
Machinery Directive is that (with the possible exception of EN ISO
12100, which contains general guidance only) there is no one standard
they can use as the basis of compliance with all EHSRs. Being a
machinery designer means having familiarity with a range of typically
20 or more standards and applying only the bits which are relevant to
your particular application.
What jolly fun!
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
When I turn my back on the sun, it's to look for a rainbow
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
-
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