It's impossible to provide more than generalisations without a lot more information, but there are a few of observations which may be useful.
Firstly, unless the equipment you are making is an assembly of modules made by someone else, then it is unlikely that EN 60204-1 is the right standard for you to be using. Secondly, EN 60204-1 is OJ listed under the LVD and the Machinery Directives but it was written primarily in support of the Machinery Directive. The requirements for emergency stops are present because the provision of E-stops is an EHSR of the Machinery Directive. The LVD contains no such requirements. The Machinery Directive actually provides a pretty good basis for performing an assessment as to whether or not an E-stop is required. In essence, it says that if the machinery is hand guided, or if the provision of an E-stop would not reduce the risk from any of the hazards presented by the machine, then an E-stop is not required. People tend to think of E-stops only in terms of big red mushroom buttons and dedicated stop circuits. In fact, it's perfectly valid to consider a normal stop or on-off switch as an emergency stop, so long as it can be shown to meet adequate levels of reliability and accessibility under the conditions in which it might actually be used. EN 418 is the standard for the provision of E-stops which has been listed against the Machinery Directive. I suggest you read it if you want to be further informed about what the requirements are for E-stops on machinery. Nick. At 1:25 pm -0500 31/10/06, Bill Flanigan wrote: >It's been my (EU) interpretation that in satisfaction of the Low >Voltage Directive, the scope of the Safety of Machinery standard >(EN60204) applies to equipment with at least one moving part. My >employer designs electrical equipment (power supplies) in >which there are no moving parts. Thus, I've selected and have been >reading EN61010 as our safety standard. > >We provide a circuit breaker (ON-OFF), a power off button (function >START-STOP) and a safety-interrupt loop connection (<24Vdc) which is >available for the user to attach their OFF switch; each >of these methods halt power output. > >I see no explicit requirement for an embedded or built-in EStop >under EN61010; does anyone else interpret this differently? > >WmFlanigan - 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 email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
