On Thursday 07 January 2016 05:27:09 Gene Heskett wrote: > On Thursday 07 January 2016 05:07:25 Gene Heskett wrote: > > On Thursday 07 January 2016 04:50:35 andy pugh wrote: > > > On 7 January 2016 at 03:32, Gene Heskett <ghesk...@wdtv.com> wrote: > > > > <http://www.ebay.com/itm/1-set-LY4NJ-12V-DC-Power-Relay-HH64P-4P > > > >DT -1 > > > > 4-Pin-10A-250VAC-With-Socket-Base-/120897376163?hash=item1c260b8 > > > >fa 3:g > > > > > > > >:3~kAAMXQgPhRkf79> > > > > > > > > That gives me a 4pdt, > > > > > > It doesn't mention being force-guided. > > > > That is a relay term I am not familiar with, please define? > > I looked it up on wikipedia. It does seem to be a good safety feature. > Perhaps I should interlock its operation by assuring it is switched at > no load by turning off a series SSR? I'll see what I can cobble up in > the hal file.
As an update, sorta. The parts I ordered are trickling in, the schottky diodes and tantalum caps have arrived, as has a small 6.3V ct filament transformer in case I need to encourage a faster turn off the bleeder, but they aren't much use until the smallish hexfets to drive relays and SSR's with get here. I've changed my mind a bit since I'll have a 4pdt relay. The swinging contacts of 2 poles will connect both ends of that 51 ohm 200 watt resistor in series with the line power to the toroids when enabled, and switch it across the caps for a bleeder when de-energized. The 3rd set of contacts will parallel the resistor with an SSR, shorting it when the on timeout has expired. This will also, by interrupting that path as the relay opens, remove any possibility of the resistor being shorted when the relay closes. The 4th set will feed back to hal, hitting a short timer to make sure the softstart done SSR is off before it can be re-enabled, enforcing a 1 or 2 second delay in that event. I haven't located an input pin on that BoB, but as thats on the P2 connector of a 5i25, there are several pins available on it yet. I also have sourced a 100 foot roll of 26 conductor ribbon, and a bag of db25 connectors of both genders so I can make cables that don't hit the wall behind the computer, trying to knock the 5i25 out of its socket. The cable has arrived, but the connectors are still on a rowboat someplace... Thanks everybody. 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> ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
