At least for myself, ‘do not want to’ may be an inappropriate specification, so ‘should not’ or 'shall not' for the below cited case would apply to my ilk.
EPO is common usage, while EMO can have several meanings, so is dependent on context. FWIW, U.S. OSHA regs only use the term 'emergency stop switch'. Brian From: John Woodgate [mailto:[email protected]] Sent: Monday, June 27, 2016 2:50 PM To: [email protected] Subject: Re: [PSES] EMO vs EPO Yes, it's essential to *study* what to do when something goes wrong. You do NOT want to cut power to a magnetic crane with a 10 ton load suspended! With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England We live in exiting times From: Ed Price [mailto:[email protected]] Sent: Monday, June 27, 2016 9:10 PM To: [email protected] Subject: Re: [PSES] EMO vs EPO My rather amateur opinion would be that an EMERGENCY STOP should be a rapid cessation to a safe state, but not necessarily an EMERGENCY POWER OFF. I could imagine a process being stopped but power being maintained to continue to monitor, cool, brake to stop or lock in place, something on the order of “I’m not going to do anything further, but I won’t let anything get worse or loose” condition. Ed Price WB6WSN Chula Vista, CA USA From: Doug Powell [mailto:[email protected]] Sent: Monday, June 27, 2016 11:50 AM To: [email protected] Subject: [PSES] EMO vs EPO All, Is there an official fine point distinction between Emergency Off (EMO), Emergency Power Off (EPO) and Emergency Stop or are they all equivalent and interchangeable terms? To my thinking, if there is a distinction, it would seem that Emergency Stop is related to mechanical hazards or moving parts, EPO is related to electrical hazards and EMO would be a general "catch all" acronym for any type of hazard whether mechanical, electrical, radiation, chemical, etc. Thanks! Doug -- Douglas E Powell [email protected] http://www.linkedin.com/in/dougp01 - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) 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]>
