a little confusion on the output board

Re: a little confusion on the output board

Postby HOODGE776 » 04 Mar 2016, 22:31

I have also noticed that if you are moving the axis before it grays out everything stays usable until you let it idle for a min or two then everything grays out.
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Re: a little confusion on the output board

Postby Support » 07 Mar 2016, 10:13

This is EMI problem. You need to have your cables shielded. your VFD need to use shielded cabling and use proper filtering for your spindle.

The interference from your VFD causes communication to drop.
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Re: a little confusion on the output board

Postby HOODGE776 » 08 Mar 2016, 01:30

ok well I made sure that the usb cable Is double shielded, my wires going to my vfd are also shielded and made sure to ground one side so that there is no ground loop. I am still having the problem of it loosing communication. is there anything else that I can do to stop this ?
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Controller: Other

Re: a little confusion on the output board

Postby Support » 08 Mar 2016, 07:30

Support
 
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Re: a little confusion on the output board

Postby HOODGE776 » 08 Mar 2016, 19:00

No I don't what des it do?
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Re: a little confusion on the output board

Postby Support » 09 Mar 2016, 09:55

Some info:
http://ecmweb.com/design/line-reactors-and-vfds
http://www.vfds.com/blog/why-should-you ... ne-reactor

If you look in your VFD user manual it is most definitely included into wiring diagram.
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Re: a little confusion on the output board

Postby HOODGE776 » 11 Mar 2016, 20:42

so I fixed my problem. as a last resort I built a faraday cage around my vfd and grounded that. THANK GOD FOR SCIENCE!
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