Hi everyone!
Does someone recognize this noise?
It appears as soon as I enable any one of three VSD-E drives. If the drive is disabled (blinking blue) it disappears.
It is induced by the VSD-E drives to everywhere in my cabinet lines. If tried disconnecting everything except one drives and it is still there. I can't why is it periodic (1 to 5 seconds). Besides this everything else works fine.
If tried with a different DC power supply and different +12V source also.
The nois burst seems to start very low frequency and resonate and then disappear until coming back again some seconds later.
Here are the pics.
Has someone experienced something similar?
This is my controllers +5V output:
This I took creating a loop between gnd and oscilloscope tip. (Purely induced)
Thanks for any help!
Luis