On 6/26/22 00:13, m...@mattshaver.com wrote:
On 2022-06-25 18:30, Jon Elson wrote:
On 6/25/22 15:56, Jon Elson wrote:
Hello, all,
I just got an R2E3 Bridgeport mill in my basement, and
will be doing a LinuxCNC retrofit.
I seem to recall the NC400 servo amps create a maddening
squeal, is that correct, or an I remembering some other
system?
The V2E3 I started with used to squeal mightily when the
amps were enabled.
Just an update. I am jury-rigging power to various things
and finally got enough stuff set up so I had analog/logic
power on the servo amps and could put 84 V DC on the power
section. I did hear a 5 KHz whine from the one amp that was
actually connected to a motor, but it was not very loud.
I'm guessing that with the cabinet closed and fans running,
it won't be all that bad. Going from 60 - 84 V did not
seem to make it much louder. I was able to turn the offset
pot and make it move faster or slower or go the other
direction. I'm only moving the Y axis as the lube metering
orifices seem to be clogged up, and Y is the only one that
is getting any visible oil. I have ordered a bunch of
missing handles, way wipers, Kwik-Switch tooling and a
bigger VFD. I think Stuart Stevenson's Dah-Lih at MPM had
NC400 amps, and the whine was astoundingly loud, even with
ear protectors on. I was worried about that, and if it had
been even 20 dB less than that machine, I would have had to
replace my servo amps.
Jon
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