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Acorn reading spindle speed 4times faster than it should be <answered>
Posted: Sun Aug 28, 2022 6:39 pm
by rk9268vc
Just got a new encoder installed 1:1 with the spindle.
Changed the ppr in wizard to match encoder.
CNC12 says spindle is turning 4 times faster than it actually is.
Go to mdi and say m3s3000 and cnc12 says 12000 rpm. Tachometer says 3000rpm.
what am i missing?
Thanks
Here is the Encoder
https://www.automationdirect.com/adc/sh ... 0r1n1024vd
If I just change the wizard to say 4096 ppr then it works great, within a few rpm of spindle. doesnt feel right tho
Re: Acorn reading spindle speed 4times faster than it should be
Posted: Sun Aug 28, 2022 6:47 pm
by Dave_C
A 1,000 line encoder has 4,000 pulses!
So whatever line encoder you have, enter 4 times that number in acorn.
Dave C.
Re: Acorn reading spindle speed 4times faster than it should be
Posted: Sun Aug 28, 2022 9:06 pm
by cncsnw
Re: Acorn reading spindle speed 4times faster than it should be
Posted: Mon Aug 29, 2022 9:22 am
by eng199
Most encoder literature specifies PPR (aka CPR or lines).
Centroid settings are in counts (PPR x 4).
Re: Acorn reading spindle speed 4times faster than it should be <answered>
Posted: Wed Aug 31, 2022 9:15 am
by cnckeith
set the monitor display resolution to 1920x1080 for best results.
and please update to v4.8
Re: Acorn reading spindle speed 4times faster than it should be <answered>
Posted: Wed Aug 31, 2022 3:08 pm
by rk9268vc
cnckeith wrote: ↑Wed Aug 31, 2022 9:15 am
set the monitor display resolution to 1920x1080 for best results.
and please update to v4.8
it is on a 1080p monitor
I havent updated because I dont want to mess up the swissi probe app and all my settings
thanks
Re: Acorn reading spindle speed 4times faster than it should be <answered>
Posted: Thu Sep 01, 2022 10:29 am
by suntravel
rk9268vc wrote: ↑Wed Aug 31, 2022 3:08 pm
cnckeith wrote: ↑Wed Aug 31, 2022 9:15 am
set the monitor display resolution to 1920x1080 for best results.
and please update to v4.8
it is on a 1080p monitor
I havent updated because I dont want to mess up the swissi probe app and all my settings
thanks
I know that feeling to update a running system feels scary.
But believe me it will not hurt even on the first time, it is easy and after getting used to it, it is a 2min task
You can loose nothing, make a backup and rename your cncm folder after making screenshots from each Wizard page.
Follow the instructions and you are running in short time.
Have your license and ProbeApp installer ready.
If you have problems, rename the cncm folders and go on with the old version till problems are solved.
4.80 is the better version, it pays off to update.
Uwe
Re: Acorn reading spindle speed 4times faster than it should be <answered>
Posted: Sun Sep 04, 2022 9:49 pm
by Crosshatch
I recommend upgrading, I did so the past month after the original from 2018. I was apprehensive but boy it worked out just fine. I did as described above and it really was effortless. I ended up doing my tools over but I had to do maintenance on them anyway, so it worked out. I had a bunch of tasks that needed to be done but it was worth the effort to upgrade.