Attachment 351042
The wiring is per the instructions from the Yaskawa manual. Maybe I should have said piggy backed instead of jumped. Anyway I did some more testing after you mentioned the wiring and as you also mentioned the sigma II being different than the other drives. I isolated the other drives (sigma I) from the contactor and powered up the sigma II, E stop and recover with no problem. Now that i know the drive and the contactor are good that just leaves a possible difference in wire lengths or one of the other drive maybe back feeding for a second. I have also tried it with 2 sets of wires coming out of the contactor one set feeding the sigma I and the other to the Sigma II which makes me think something is back feeding.
Any solutions??
Maybe adding another contactor just for the sigma II??
I did not know that you weren't suppose to use the E stop if it could be avoided. As far as i know that is how Milltronics recommends shutting their machines down. E stop then flip the master disconnect.
Regardless I would like everything to be working as intended even if it wont be used except in an emergency.