My big machine was never shut off, It was on for at least ten days and maybe more. I came to the workshop and swtiched the light on (two rows of industrial double fluorescent), I noticed that the machine gave noise when the light went on which has never happened before. I went to the machine which is close to the main fuses, so I flipped the light fuse off/on and a shiver went down the spine - the machine moved when the light was turned on!!!
I immediately started to check the grounding points, the voltage in the grounding point at the cabinet, tried to add a new grounding point, restarted the controller hardware - no difference at all! I restarted EMC2 (yes, haven't upgraded yet...) and guess what, the disturbance went zip, nada, totally gone! The computer was still not restarted. I restarted stuff, pulled cables, flipped the light fuse, restarted the controller computer. Nothing, and I really mean nothing, could reproduce the error. This must be one of the most weird things I've seen in electronics, but sensitivity to noise was accumulated in the software. Once restarted it was all gone. Now a day later the machine is still fine. Weird, right? /S ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
