In my opinion, this arrangement may likely confuse the user. Reason: lights are typically used as status indicators---green for on, and red for stopped. This reverses that logic and might well confuse the user. See NFPA 79 or EN IEC 60204-1 for typical color codes for machinery. In my recollection, lights that are prompts for users are coded blue, that adding yet another color would likely complicate your design at little benefit. Mike Sherman Sherman PSC LLC
> On 03/06/2024 10:10 AM CST Brian Kunde <[email protected]> wrote: > > > > Greetings to all. > > We are working on a motor driven machine that would be used in a commercial, > industrial, and light industrial environment. > > The machine has a Green button to Start, and a Red button to Stop. These > buttons are illuminated. Other than the e-stop, these are the only operator > controls on the product. > > When the machine is stopped, the Green button is lit. When you press the > green button, the motor starts, but then the green light in the button goes > out and the red light in the Stop button lights up (not flashing). Is this > OK? > > The design team for this project thought it would help the Operator find the > buttons easier this way. > > I must also state that this machine is not designed to follow the > construction rules for Control Panels. We call it a highbred design. It will > be serviced and maintained by the manufacturer. > > My only question is regarding the illuminated lights but feel free to comment > on any other aspect of this email. > > Regards, > The Other Brian > > --------------------------------------------- > > 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: > https://www.mail-archive.com/[email protected]/ > > > > Website: https://ewh.ieee.org/soc/pses/ https://ewh.ieee.org/soc/pses/ > Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to > unsubscribe) https://ewh.ieee.org/soc/pses/list.html > List rules: https://ewh.ieee.org/soc/pses/listrules.html > > For help, send mail to the list administrators: > Mike Sherman at: [email protected] mailto:[email protected] > Rick Linford at: [email protected] mailto:[email protected] > > For policy questions, send mail to: > Jim Bacher at: [email protected] mailto:[email protected] > > > --------------------------------------------- > > To unsubscribe from the EMC-PSTC list, click the following link: > https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1 > - ---------------------------------------------------------------- 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: https://www.mail-archive.com/[email protected]/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: [email protected] Rick Linford at: [email protected] For policy questions, send mail to: Jim Bacher: <[email protected]> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
