On Wednesday 21 June 2017 22:37:28 Ralph Stirling wrote: > The AQY280EH is optically isolated, but can only switch a low current > load (130mA). If you are switching a 60w bulb, you would need a > several amp device to handle the in-rush current of a cold bulb. I > like to wire a "puck" type solid state relay (ssr) into an old metal > outlet strip (that can be opened up, and that has room inside) or into > a 4x4 metal junction box with a receptacle and cord. A couple of > small wires can be brought out for the low voltage control. > > If you need more detail, I can dig up some example ssr part numbers > and sketch out the simple circuit for you. > I am using a similar circuit, 2 SSR's wide, to switch both sides of the 254 volt feed that powers the VFD and stepper supplies on this Sheldon lathe. These are the 40 amp versions because there is a considerable inrush when powering up the supplies. mpja.com has several sizes of such devices, all of which can be controlled by the 3 volt or more signal from most any breakout board.
Because the inrush was so high on my mill, I had to soft start the spindle motor supply else it would trip a 20 amp breaker starting it. So the first stage starts with a 100 ohm 200 watt resistor to limit the current, then about 4 seconds later, enables the 2nd SSR which connects it directly. The mill, working, draws about 3.5 amps. Big SSR's are handy, so I keep at least 2 in the spare parts drawer. > -- Ralph > > On Jun 21, 2017 12:03 PM, kqt4a...@gmail.com wrote: > I am just a tinkerer so I'm looking for advice. I have a project using > an ESP8266 to control a light. I am using a Panasonic AQY280EH to > switch the light. What is the safe protocol for mounting and > connecting a device that is using a high voltage. > > ---------------------------------------------------------------------- >-------- Check out the vibrant tech community on one of the world's > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ---------------------------------------------------------------------- >-------- Check out the vibrant tech community on one of the world's > most engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
