On Sat, 23 Feb 2019, Gene Heskett wrote:
Date: Sat, 23 Feb 2019 11:47:48 -0500
From: Gene Heskett <[email protected]>
Reply-To: "Enhanced Machine Controller (EMC)"
<[email protected]>
To: [email protected]
Subject: Re: [Emc-users] New discovery for 5i25-7i76 users.
On Saturday 23 February 2019 11:02:36 Peter C. Wallace wrote:
On Sat, 23 Feb 2019, Gene Heskett wrote:
Date: Sat, 23 Feb 2019 08:35:08 -0500
From: Gene Heskett <[email protected]>
Reply-To: "Enhanced Machine Controller (EMC)"
<[email protected]>
To: [email protected]
Subject: [Emc-users] New discovery for 5i25-7i76 users.
Greetings PCW;
According to what I am seeing with a halmeter, the 7i76 completely
replaces any need for a pwmgen to be included in the hm2 config line
of the hal file, thereby simplifying ones hal file by quite a few
lines.
However, with a vfd to control, it appears there are 3 parameters to
be added and serviced with setp's:
hm2_5i25.0.7i76.0.0.spinout-maxlim
hm2_5i25.0.7i76.0.0.spinout-minlim
hm2_5i25.0.7i76.0.0.spinout-scalemax
However this does not disable the spindle if the requested speed is
below minlim. Shouldn't it?
No, it just bounds the input range
For a typical use you would set
hm2_5i25.0.7i76.0.0.spinout-maxlim to maximum spindle RPM
hm2_5i25.0.7i76.0.0.spinout-minlim to 0 or some minimum spindle RPM
hm2_5i25.0.7i76.0.0.spinout-scalemax to maximum spindle RPM
Set for 24000 max's, and 2400 min, it will still tell the spindle to run
at 1 rpm. Or from the mdi cli s2m3 still tries to run it, at 2 rpm. So
obviously I've not got it net'd correctly.
This is what I have:
#setup spindle driver
# NOTE no pwmgen in the 5i25 is used!
net spindle-cmd <= spindle.0.speed-out
net spindle-cmd => abs.1.in
net spindle-abs <= abs.1.out => hm2_5i25.0.7i76.0.0.spinout
setp hm2_5i25.0.7i76.0.0.spinout-maxlim [SPINDLE_0]MAXREV_LIM #24000
setp hm2_5i25.0.7i76.0.0.spinout-minlim [SPINDLE_0]MINREV_LIM #2400
setp hm2_5i25.0.7i76.0.0.spinout-scalemax [SPINDLE_0]MAXREV_LIM #24000
net spindle-enable <= spindle.0.on
net spindle-enable => hm2_5i25.0.7i76.0.0.spinena
net spindle-ccw <= spindle.0.reverse => hm2_5i25.0.7i76.0.0.spindir
I'd appreciate some guidance in setting those intelligently.
At first glance it looks like scalemax and maxlim should be the same
and equal to the spindles top speed of 24000 revs, and I'm guessing
that minlim should be around 2400 in order to protect the spindle
and vfd from an over-exuberance of low speed torque boosting over
drive. Then one could S command speeds directly in rpms.
How far off am I?
That sounds right
Ok. I'll leave it there. But its not setting a minimum speed below which
it is stopped. The vfd may have its own limit that I've not found yet.
This vfd is best described as a bastard due to the lack of engrish docs.
Google translate does a decent job, but only does the first 40 pages of a
65 page manual. It dies at about the point where it gets interesting...
Thanks Peter.
Cheers, Gene Heskett
Thats correct, minlim wil bound the setting but does not disable the spindle
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>
_______________________________________________
Emc-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/emc-users
Peter Wallace
Mesa Electronics
(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.
_______________________________________________
Emc-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/emc-users
