[scadvice]

As I understand the phase generators only one leg is artificially generated. We have for example L1 and L2 coming directly in as normal. Each of those 120v from your 220 v single phase coming ‘IN’. Coming out, you are getting the normal L1, L2, and a leg generated by the phase device, L3 (in this example). This particular generated leg is subject to the voltage dropping more severely then the ”natural” legs under the high loads of say the spindle starting in high range and or servos moving fast.
In my case, the leg that was artificially generated (L3) just so happened to be the leg that was wired to support the transformer (dropping the 120v down to the 5v) for the computer. With a heavy start up load on the spindle and or servo, L3 voltage would drop so much the transformer (120v in and 5 v out)… the 5 v would drop voltage severely enough to momentarily make the computer flicker and the machine would lose track of what it was doing and stop.
Anyone out there that can explain this better than me please speak up I not an electronic guy, I’m just repeating what I was told.
So…what I was told to do was… switch that L3 generated leg off of the computer and use one of the other legs to run it.
Your phase generator schematic may show which ”L” leg is generated mine did.