991
General Mach Discussion / Re: UC100 stopping
« on: November 29, 2021, 06:58:02 PM »
Hi,
USB is prone to electrical noise and when it does suffer it will stop as you have described.
There are any number of ideas to prevent noise and stop whatever noise is about from affecting various circuits.
Usually the most electrically noisy device in any setup is the spindle. I would suggest a big kick arse two, or even better three stage EMI filter.
I would suggest another one for the AC input to your PC.
https://nz.element14.com/schaffner/fn2060-16-06/filter-16a-multi-stage-chassis/dp/1191381
What you're trying to do is to stop the spindle/VFD combination from impressing harmonic distortion/noise onto the AC supply which can then get into
your PC/UC100 combination. Many people overlook this 'conducted noise path' and they focus instead on shielding and screening. Two or three good EMI filters,
or even a line reactor can often render all the screening and shielding un-needed.
You could also try two split ferrite rings, one at one third and the other at two thirds the length of your USB cable.
https://nz.element14.com/fair-rite/0446164181/ferrite-core-split-12-7mm-205ohm/dp/1781360
Craig
USB is prone to electrical noise and when it does suffer it will stop as you have described.
There are any number of ideas to prevent noise and stop whatever noise is about from affecting various circuits.
Usually the most electrically noisy device in any setup is the spindle. I would suggest a big kick arse two, or even better three stage EMI filter.
I would suggest another one for the AC input to your PC.
https://nz.element14.com/schaffner/fn2060-16-06/filter-16a-multi-stage-chassis/dp/1191381
What you're trying to do is to stop the spindle/VFD combination from impressing harmonic distortion/noise onto the AC supply which can then get into
your PC/UC100 combination. Many people overlook this 'conducted noise path' and they focus instead on shielding and screening. Two or three good EMI filters,
or even a line reactor can often render all the screening and shielding un-needed.
You could also try two split ferrite rings, one at one third and the other at two thirds the length of your USB cable.
https://nz.element14.com/fair-rite/0446164181/ferrite-core-split-12-7mm-205ohm/dp/1781360
Craig