On Tue, Feb 2, 2016, at 10:22 PM, Gene Heskett wrote: > On Tuesday 02 February 2016 21:55:10 Jon Elson wrote: > > > Gene, > > > > One detail. Is the breaker only tripping when you turn OFF > > the SSR? > > No Jon, I stretched the off delays, and the breaker is falling as soon as > I click the off button. Thats 3 to 5 seconds BEFORE either SSR is turned > off. And that puts the puzzle in a brand new category.
The breaker trips the instant you click a button on the screen. You think the SSRs are being commanded to turn off several seconds after you click the screen button. There must be some faster path between the button click and the breaker. Your problem is to find it. Assume nothing, trust nothing. Identify EVERY single output from the PC, no matter where you think it goes and when you think it is supposed to change state. Put a meter (real, not HAL) on each output, one at a time (or better yet, a scope). Find the one that changes state (even if only for a few micro-seconds) when you click your on-screen button. Once you know what PC pin(s) change state at that instant, we can start to figure out how that state change trips the breaker. (Or it might become obvious....) When this was an intermittent problem it could have been a nightmare to find. Now that it is happening repeatably on command (when you click the on-screen button), it shouldn't be terribly hard to track down. John Kasunich John Kasunich jmkasun...@fastmail.fm ------------------------------------------------------------------------------ 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
