EMI/RFI HELP UPDATE
Posted by
stan mcdonald
on 2002-05-29 11:18:52 UTC
A while back i posted a message in regards to VFD and RFI noise in that
message I had sugested building a capacitor low pass filter and the
option of putting a transformer in front of the machine with the VFD in
it. I did put the transformer infront of the machine only to note that
it did NOT make any difference in the EMI/ RFI noise. I also constructed
a low pass filter based on my knowlage of electronics and with the help
of JON ELSON made a low pass filter that did help. However it did not
eliminate the problem. What did help was to lower the carrier freq on
the drive.
Thanks Jon for your help.
Regards
Stan
message I had sugested building a capacitor low pass filter and the
option of putting a transformer in front of the machine with the VFD in
it. I did put the transformer infront of the machine only to note that
it did NOT make any difference in the EMI/ RFI noise. I also constructed
a low pass filter based on my knowlage of electronics and with the help
of JON ELSON made a low pass filter that did help. However it did not
eliminate the problem. What did help was to lower the carrier freq on
the drive.
Thanks Jon for your help.
Regards
Stan