Re: [Emc-users] G33.1 in a peck loop

[andy pugh]

On 28 March 2016 at 22:12, Gene Heskett  wrote:
> And at 16:15 local EDT time, the phone number in Hoffman Estates, IL, on
> CDT so its 3:15 their time, is being answered by a voice mail system.

Easter Monday is a public holiday in many parts of the world. Maybe
this is true in IL?

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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Re: [Emc-users] XHC-HB04 on LinuxCNC

[andy pugh]

On 29 March 2016 at 07:34, Danny Miller  wrote:
> 1.  xhc has no effect in World mode at all.  Either the XYZ page or when
> you select MDI

Which version of LinuxCNC are you using?

In 2.7 incremental jogging (which I think includes wheel jogging) is
not supported, as described in the Gantrykins documentation:
http://linuxcnc.org/docs/2.7/html/man/man9/gantrykins.9.html

Unless your machine is set up with separate home switches for each
side to support auto-squaring then it might be simpler to configure as
a simple slaved config and trivkins (ie, just send the X step pulses
to two drives)

If you do wish to use Gantrykins then you should consider using the
joints_axes12 development branch of LinuxCNC (which needs more
testing, but has been reliable on my trivkins machines for years). I
believe that that does support world-mode incremental jogging.

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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Re: [Emc-users] Way OT: Cannot see Workgroup Computers

[John Thornton]

Rebooting the router or computer usually fixes this issue for me.

JT

On 3/28/2016 8:47 AM, Rick Lair wrote:
> In know this is way off topic, but if anybody would possibly know, I'm
> sure they are floating around here somewhere,
>
> We have a small network here at the shop, roughly a dozen PC's and 4
> CNC's ( my linuxcnc builds) that are all networked together, using a
> workgroup type setup, not a domain. Most of the time everything works
> fine, but randomly ( right now) when you try to look at one of the other
> workgroup computers, there is nothing there. On my wheezy machine I
> clicked on the "Network" selection, and then clicked on the "Windows
> Network" link, and there is nothing there. So I went back to XP machine,
> and went and clicked "View Workgroup Computers", and a popup box comes
> up after about 10 seconds that says " The list of servers for this
> workgroup is currently unavailable". On both machines, I can access the
> internet just fine, I pinged the wheezy machine from my XP machine, and
> everything looks fine there, so what could possibly cause it not
> see/display the other PC's in the network managers of either machine?
>
>


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Re: [Emc-users] G33.1 in a peck loop

[Gene Heskett]

On Tuesday 29 March 2016 05:18:03 andy pugh wrote:

> On 28 March 2016 at 22:12, Gene Heskett  wrote:
> > And at 16:15 local EDT time, the phone number in Hoffman Estates,
> > IL, on CDT so its 3:15 their time, is being answered by a voice mail
> > system.
>
> Easter Monday is a public holiday in many parts of the world. Maybe
> this is true in IL?

I suppose it could be Andy, but in my 81 years, I've never had an Easter 
Monday off.  That would be a new experience for me.

In fact, I've had several Easter Sunday's that I worked.  When the cash 
cow quits, you get up and roll to see what happened, when it happens.  

In one instance, I spent the entire day overhauling a GE AK-225 circuit 
breaker that picked sign on time on an Easter Sunday, to cook its 
contacts.

The guts of that breaker, extracted from the housing, are about 60 lbs. A 
bit on the heavy duty category, it handles up to 1200 amps/phase, but in 
this case the over currant trips were set for about 650 amps.

It was feeding the beam supply for a GE UHF transmitter, which was 3 ea 
50 kw powerline cans wired backwards to send about 14,000 volts at 12 
amps to the 3 phase bridge rectifiers that made the 19,700 volts for two 
4KM100LA klystrons.

Primary windings to the breaker and back to the cans were 2 ea per phase, 
of 750mcm cable.  The transformers were filled with Askerol, aka 25 or 
30 gallons of PCB's each.  You might be able to find traces of pcb's in 
me yet as I have worked on stuff filled with it, up to my elbows, fixing 
a bolted connection that burned off inside one of those, and later, 
working on a Townsend TX, where all that stuff was in a big square can 
covered several inches deep so nothing could arc over.  But you had to 
open the lid and fish out the rectifier stacks to repair them 
occasionally.

You get as much pcb's in you from breathing the fumes as you get from 
getting it on your skin, where it takes about 2 weeks worth of scrubbing 
with boraxo in the shower before folks quit asking whats that smell.

When that stuff was outlawed, and we couldn't get replacement cans filled 
with it, fire regulations meant we had to move the crisco (vegetable 
oil) filled cans we could get, out of the building to a caged area 
outside.  That took a run of 6" conduit to get the power out there from 
the breaker, and a 4" run coming back in for the high voltage, using a 
special semi-conductor wire insulation with bells for corona control on 
the ends, designed for direct burial. The new cans were "crisco" filled, 
and needed 10% of the maintainance the Askerol filled cans needed, that 
crap ate the si rubber gaskets out of the top access covers about every 
3 years. The si rubber seals on a crisco filled can will often last 50 
years hanging on a pole in a residential area.  You can probably see one 
of those from your property as the house drop comes from one of those.

Just one of my "war stories" folks.

I hope everyone enjoyed the reason for Easter.

Cheers, Gene Heskett
-- 
"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 

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Re: [Emc-users] Way OT: Cannot see Workgroup Computers

[Rick Lair]

Late yesterday I rebooted the router and everything came back, but then 
I blew the connection to the accountants Quickbooks files on the server, 
fixed one problem, created another that took an hour to fix this 
morning, go figure,,

Thanks Guys



On 3/29/2016 9:17 AM, John Thornton wrote:
> Rebooting the router or computer usually fixes this issue for me.
>
> JT
>
> On 3/28/2016 8:47 AM, Rick Lair wrote:
>> In know this is way off topic, but if anybody would possibly know, I'm
>> sure they are floating around here somewhere,
>>
>> We have a small network here at the shop, roughly a dozen PC's and 4
>> CNC's ( my linuxcnc builds) that are all networked together, using a
>> workgroup type setup, not a domain. Most of the time everything works
>> fine, but randomly ( right now) when you try to look at one of the other
>> workgroup computers, there is nothing there. On my wheezy machine I
>> clicked on the "Network" selection, and then clicked on the "Windows
>> Network" link, and there is nothing there. So I went back to XP machine,
>> and went and clicked "View Workgroup Computers", and a popup box comes
>> up after about 10 seconds that says " The list of servers for this
>> workgroup is currently unavailable". On both machines, I can access the
>> internet just fine, I pinged the wheezy machine from my XP machine, and
>> everything looks fine there, so what could possibly cause it not
>> see/display the other PC's in the network managers of either machine?
>>
>>
>
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Thanks


Rick Lair
Superior Roll & Turning LLC
399 East Center Street
Petersburg MI, 49270
PH: 734-279-1831
FAX: 734-279-1166
www.superiorroll.com


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Re: [Emc-users] Keep getting Following Error in World Mode

[dannym]

Well there is a DEFAULT_VELOCITY.

Thinking over what all I did last night, I think IF joint 0 or its linked joint 
3 were manipulated in Joint Mode, it would work but then immediately throw a 
Following Error when entering Joint Mode (or, IIRC, going to the MDI window).  
Without ANY sort of move involved.

Any idea what would cause that?

Danny


 andy pugh  wrote: 
> On 28 March 2016 at 07:52, Danny Miller  wrote:

> I've been seeing some trouble where it's ok in joint mode, then as soon
> as I go into World mode, I get "joint 0 following error".  Any idea why
> that is?

One thing to check is that you have a [TRAJ]DEFAULT_VELOCITY entry in the INI.
http://linuxcnc.org/docs/2.7/html/config/ini-config.html#_traj_section

Though when that was discovered the f-error happened at the end of a jog.

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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Re: [Emc-users] Keep getting Following Error in World Mode

[andy pugh]

On 29 March 2016 at 16:33,   wrote:

> Thinking over what all I did last night, I think IF joint 0 or its linked 
> joint 3 were manipulated in Joint Mode, it would work but then immediately 
> throw a Following Error when entering Joint Mode (or, IIRC, going to the MDI 
> window).  Without ANY sort of move involved.
>
> Any idea what would cause that?

This might just be a side-effect of how the command and feedback pins
are connected in HAL.
What pin is connected to axis.0.motor-position-fb ?

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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[Emc-users] I thought this was worth sharing (seen on the forum)

[andy pugh]

https://www.youtube.com/watch?v=KcHUKqY422M

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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Re: [Emc-users] Way OT: Cannot see Workgroup Computers

[Gene Heskett]

On Tuesday 29 March 2016 11:21:05 Rick Lair wrote:

> Late yesterday I rebooted the router and everything came back, but
> then I blew the connection to the accountants Quickbooks files on the
> server, fixed one problem, created another that took an hour to fix
> this morning, go figure,,
>
> Thanks Guys
>
> On 3/29/2016 9:17 AM, John Thornton wrote:
> > Rebooting the router or computer usually fixes this issue for me.
> >
> > JT
> >
> > On 3/28/2016 8:47 AM, Rick Lair wrote:
> >> In know this is way off topic, but if anybody would possibly know,
> >> I'm sure they are floating around here somewhere,
> >>
> >> We have a small network here at the shop, roughly a dozen PC's and
> >> 4 CNC's ( my linuxcnc builds) that are all networked together,
> >> using a workgroup type setup, not a domain. Most of the time
> >> everything works fine, but randomly ( right now) when you try to
> >> look at one of the other workgroup computers, there is nothing
> >> there. On my wheezy machine I clicked on the "Network" selection,
> >> and then clicked on the "Windows Network" link, and there is
> >> nothing there. So I went back to XP machine, and went and clicked
> >> "View Workgroup Computers", and a popup box comes up after about 10
> >> seconds that says " The list of servers for this workgroup is
> >> currently unavailable". On both machines, I can access the internet
> >> just fine, I pinged the wheezy machine from my XP machine, and
> >> everything looks fine there, so what could possibly cause it not
> >> see/display the other PC's in the network managers of either
> >> machine?

Rick, I can't help since you're using a windows mix. If you were a  pure 
linux house, sshfs is the bee's knee's. Once setup by installing the 
sshfs bits, making a root of the tree /sshnet directory, and generating 
and exchanging the ssh keys, its as simple as this 3 liner in 
my /etc/rc.local.

su gene -c "sshfs gene@shop:/ /sshnet/shop"
su gene -c "sshfs gene@lathe:/ /sshnet/lathe"
su gene -c "sshfs gene@GO704:/ /sshnet/GO704"

And anything I have user rights to is 100% available to me here on this 
machine. If I need root to do something, its as close as sudo.  In fact, 
my sim install here, uses the /sshnet/GO704/home/gene/linuxcnc/nc_files 
directory as its nc_files directory, so I can edit from here, a file on 
that machine and then go run it.  That link does NOT go away if I reboot 
one of those machines, or this one. No samba|cifs|nfs finickiness, it 
Just Works(TM).

I might add that because of the keys exchange, I am known instantly on 
those machines without having to enter my user pw, a simple
 "ssh -Y shop"
And I am logged into my home dir on the machine that runs the toy mill.

Whats not to like?

I outlawed winders on my property when I was still using an Amiga as my 
work machine.  That was in the 90's.  But I've been pure linux since 
about 1999 here. I don't miss the licensing headache called windows a 
bit.

Cheers, Gene Heskett
-- 
"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 

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Re: [Emc-users] I thought this was worth sharing (seen on the forum)

[Nicklas Karlsson]

Amazing.

> https://www.youtube.com/watch?v=KcHUKqY422M
> 
> -- 
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1916
> 
> --
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> Intel Data Analytics Acceleration Library.
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Re: [Emc-users] Way OT: Cannot see Workgroup Computers

[Rick Lair]

Command line work in the shop would never happen, I'm pretty sure they 
would tell me to get F$%*ed, and go sit in the break room ;)

The router issue wasn't a big deal, I was leery from the start due to 
the quickbooks issue, I didn't want to reboot the router because I know 
it kicks her out of her session, luckily she had to leave early 
yesterday so I did the reboot, and it still gave us hell this morning. I 
was just looking for an alternative to powering down the router was all.

Rick



On 03/29/2016 12:00 PM, Gene Heskett wrote:
> On Tuesday 29 March 2016 11:21:05 Rick Lair wrote:
>
>> Late yesterday I rebooted the router and everything came back, but
>> then I blew the connection to the accountants Quickbooks files on the
>> server, fixed one problem, created another that took an hour to fix
>> this morning, go figure,,
>>
>> Thanks Guys
>>
>> On 3/29/2016 9:17 AM, John Thornton wrote:
>>> Rebooting the router or computer usually fixes this issue for me.
>>>
>>> JT
>>>
>>> On 3/28/2016 8:47 AM, Rick Lair wrote:
 In know this is way off topic, but if anybody would possibly know,
 I'm sure they are floating around here somewhere,

 We have a small network here at the shop, roughly a dozen PC's and
 4 CNC's ( my linuxcnc builds) that are all networked together,
 using a workgroup type setup, not a domain. Most of the time
 everything works fine, but randomly ( right now) when you try to
 look at one of the other workgroup computers, there is nothing
 there. On my wheezy machine I clicked on the "Network" selection,
 and then clicked on the "Windows Network" link, and there is
 nothing there. So I went back to XP machine, and went and clicked
 "View Workgroup Computers", and a popup box comes up after about 10
 seconds that says " The list of servers for this workgroup is
 currently unavailable". On both machines, I can access the internet
 just fine, I pinged the wheezy machine from my XP machine, and
 everything looks fine there, so what could possibly cause it not
 see/display the other PC's in the network managers of either
 machine?
> Rick, I can't help since you're using a windows mix. If you were a  pure
> linux house, sshfs is the bee's knee's. Once setup by installing the
> sshfs bits, making a root of the tree /sshnet directory, and generating
> and exchanging the ssh keys, its as simple as this 3 liner in
> my /etc/rc.local.
>
> su gene -c "sshfs gene@shop:/ /sshnet/shop"
> su gene -c "sshfs gene@lathe:/ /sshnet/lathe"
> su gene -c "sshfs gene@GO704:/ /sshnet/GO704"
>
> And anything I have user rights to is 100% available to me here on this
> machine. If I need root to do something, its as close as sudo.  In fact,
> my sim install here, uses the /sshnet/GO704/home/gene/linuxcnc/nc_files
> directory as its nc_files directory, so I can edit from here, a file on
> that machine and then go run it.  That link does NOT go away if I reboot
> one of those machines, or this one. No samba|cifs|nfs finickiness, it
> Just Works(TM).
>
> I might add that because of the keys exchange, I am known instantly on
> those machines without having to enter my user pw, a simple
>   "ssh -Y shop"
> And I am logged into my home dir on the machine that runs the toy mill.
>
> Whats not to like?
>
> I outlawed winders on my property when I was still using an Amiga as my
> work machine.  That was in the 90's.  But I've been pure linux since
> about 1999 here. I don't miss the licensing headache called windows a
> bit.
>
> Cheers, Gene Heskett

-- 
Thanks


Rick Lair
Superior Roll & Turning LLC
399 East Center Street
Petersburg MI, 49270
PH: 734-279-1831
FAX: 734-279-1166
www.superiorroll.com


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Re: [Emc-users] I thought this was worth sharing (seen on the forum)

[Andrew]

Wow! Really cool machine. And it can make much larger things

Andrew

2016-03-29 18:42 GMT+03:00 andy pugh :

> https://www.youtube.com/watch?v=KcHUKqY422M
>
> --
> atp
> "A motorcycle is a bicycle with a pandemonium attachment and is
> designed for the especial use of mechanical geniuses, daredevils and
> lunatics."
> — George Fitch, Atlanta Constitution Newspaper, 1916
>
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[Emc-users] Changing From Mach3 to LinuxCNC questions

[hubert]

I am purchasing a used CNC Mill using Stepper motors and a BLDC Spindle 
motor.  It currently is using Mach3 with a usb smooth stepper 
interface.  I found out I will either have to purchase Mach3, or as I 
prefer convert it to use LinuxCNC.  Since this is a much higher 
performance system than I currently have, I am thinking something such 
as Mesa 7I76-6I25 PNG KIT might be just the ticket to enable the 
conversion.  I would appreciate comments/suggestions.
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Re: [Emc-users] Changing From Mach3 to LinuxCNC questions

[Marius Liebenberg]

Your choice of Mesa cards are a good start. You can't go wrong with 
that. You will have enough IO to do all the work you want on a mill.

-- Original Message --
From: "hubert" 
To: emc-users@lists.sourceforge.net
Sent: 2016-03-29 21:06:40
Subject: [Emc-users] Changing From Mach3 to LinuxCNC questions

>I am purchasing a used CNC Mill using Stepper motors and a BLDC Spindle
>motor.  It currently is using Mach3 with a usb smooth stepper
>interface.  I found out I will either have to purchase Mach3, or as I
>prefer convert it to use LinuxCNC.  Since this is a much higher
>performance system than I currently have, I am thinking something such
>as Mesa 7I76-6I25 PNG KIT might be just the ticket to enable the
>conversion.  I would appreciate comments/suggestions.
>--
>Transform Data into Opportunity.
>Accelerate data analysis in your applications with
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Re: [Emc-users] Changing From Mach3 to LinuxCNC questions

[Viesturs Lācis]

A month or so ago I converted one desktop mill from mach3 to LinuxCNC
for a customer. It was using some USB-based controller with mach3, I
do not know, if that is the same smooth-stepper or maybe something
else. What I did:
1) installed Mesa 5i25 card in PC case;
2) installed new SSD drive in PC case and unplugged the old one (this
is my VIP customer - gave him a possibility to convert back by
replugging 3 cables as it took quite some time to finetune the config
- machine is used for jewelry-like stuff, so max precision of machine
is required and he was picky about any imperfections);
3) reused the parport breakout board - part of the decision was
laziness to rewire - in this case I just had to replug the LPT cable;
4) flashed 5i25 with firmware for G540;
5) adjusted hm2-stepper sample config for particular machine;
So it was 2 new pieces of hardware, but you most definitely can reuse
the harddrive. It seems that after proper tuning of machine parameters
people are getting good results with built-in parport, but I wanted to
stick with what I knew would work great and the 5i25 is not that
expensive...

Viesturs


2016-03-29 22:06 GMT+03:00 hubert :
> I am purchasing a used CNC Mill using Stepper motors and a BLDC Spindle
> motor.  It currently is using Mach3 with a usb smooth stepper
> interface.  I found out I will either have to purchase Mach3, or as I
> prefer convert it to use LinuxCNC.  Since this is a much higher
> performance system than I currently have, I am thinking something such
> as Mesa 7I76-6I25 PNG KIT might be just the ticket to enable the
> conversion.  I would appreciate comments/suggestions.
> --
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> Accelerate data analysis in your applications with
> Intel Data Analytics Acceleration Library.
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Re: [Emc-users] Changing From Mach3 to LinuxCNC questions

[Dave Cole]

Why do you have to buy Mach3 if it was already controlling the machine?

Dave

On 3/29/2016 2:06 PM, hubert wrote:
> I am purchasing a used CNC Mill using Stepper motors and a BLDC Spindle
> motor.  It currently is using Mach3 with a usb smooth stepper
> interface.  I found out I will either have to purchase Mach3, or as I
> prefer convert it to use LinuxCNC.  Since this is a much higher
> performance system than I currently have, I am thinking something such
> as Mesa 7I76-6I25 PNG KIT might be just the ticket to enable the
> conversion.  I would appreciate comments/suggestions.
> --
> Transform Data into Opportunity.
> Accelerate data analysis in your applications with
> Intel Data Analytics Acceleration Library.
> Click to learn more.
> http://pubads.g.doubleclick.net/gampad/clk?id=278785471&iu=/4140
> ___
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> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users

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Re: [Emc-users] Changing From Mach3 to LinuxCNC questions

[Viesturs Lācis]

Do not know about OP, my client received machine with mach3 that was
not licenced... So you may guess if it actually worked correctly.
Especially with with g-code files of 300K+ lines.

Viesturs


2016-03-30 1:18 GMT+03:00 Dave Cole :
> Why do you have to buy Mach3 if it was already controlling the machine?
>
> Dave
>
> On 3/29/2016 2:06 PM, hubert wrote:
>> I am purchasing a used CNC Mill using Stepper motors and a BLDC Spindle
>> motor.  It currently is using Mach3 with a usb smooth stepper
>> interface.  I found out I will either have to purchase Mach3, or as I
>> prefer convert it to use LinuxCNC.  Since this is a much higher
>> performance system than I currently have, I am thinking something such
>> as Mesa 7I76-6I25 PNG KIT might be just the ticket to enable the
>> conversion.  I would appreciate comments/suggestions.
>> --
>> Transform Data into Opportunity.
>> Accelerate data analysis in your applications with
>> Intel Data Analytics Acceleration Library.
>> Click to learn more.
>> http://pubads.g.doubleclick.net/gampad/clk?id=278785471&iu=/4140
>> ___
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>> Emc-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/emc-users
>
> --
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> Accelerate data analysis in your applications with
> Intel Data Analytics Acceleration Library.
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Re: [Emc-users] VFD Tweaking

[andy pugh]

On 7 January 2016 at 23:20, John Kasunich  wrote:
>> I am sure you are right, but that wasn't my point. 240V single-phase
>> VFDs largely top-out at 3HP.
>
> Doesn't need to be single phase input.
>
> A single-phase input VFD has modestly up-rated diodes and caps to
> handle the higher peak currents and ripple current that comes with
> a single phase operation.


Clearly there is a lot more to this VFD thing than I thought.

I got a 4hp Huangyang VFD from that eBay. Communicating with it via
RS485 turned out to be very easy with the hy_vfd HAL component.

This evening I connected it to the lathe, and found that the lathe
would turn at very low speeds, but then it was acting like the
clutches were not working.
But it had all worked OK before, and nothing had changed but the VFD.

So I fitted the castor-frame to the lathe, and rolled it away from the
wall so that I could see the motor shaft.
Very bizarrely the motor was running weakly at low speed requests,
then getting even weaker at higher speed requests, and basically
stopping at a VFD-displayed 50Hz and 3.5A.

Well, at least it wasn't a clutch problem..

So, I reset the VFD to factory settings, and tried running from the
operator panel. Lo and behold it all worked fine, and at 100Hz I get
the full 3000rpm spindle speed that the lathe is rated for.
Oddly, the display at 50Hz / 1440 rpm _still_ only says 3.5A.

Setting it back to RS485 didn't bring back the wierd behaviour, it was
running happily at 3000 rpm in high range and seemed to make decent
torque down to 80rpm in low range.

So, I have no idea what was wrong at first, but maybe it got unhappy
being powered up with no motor when I was setting up RS485.

 I am also very baffled why the same motor would trip out a 3hp VFD at
12A and 1500 rpm but run at 3000 rpm at 3.5A with a 4hp VFD.

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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Re: [Emc-users] VFD Tweaking

[Nicklas Karlsson]

> ...
> So, I reset the VFD to factory settings, and tried running from the
> operator panel. Lo and behold it all worked fine, and at 100Hz I get
> the full 3000rpm spindle speed that the lathe is rated for.
> Oddly, the display at 50Hz / 1440 rpm _still_ only says 3.5A.

There is a very strong correlation between current and load/torque.

> ...

>  I am also very baffled why the same motor would trip out a 3hp VFD at
> 12A and 1500 rpm but run at 3000 rpm at 3.5A with a 4hp VFD.

Probably because of wrong parameters. Flux weakening by lowering voltage is 
possible, to move in the opposite direction by applying full voltage at lower 
than rated speed is possible but is probably not a very good idea.


Nicklas Karlsson

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Re: [Emc-users] Keep getting Following Error in World Mode

[Danny Miller]

OK it's definitely from moving joint 0 or 3 while in Joint mode.  Then 
I'll get Following Error as soon as I go to World Mode.


No problems from moving joint 1(y) or joint 2(z).  So it's surely a 
problem with the 0/3 being linked under gantrykins.


I'm enclosing the .hal/.ini, if that'll go through.  Not too long.

Danny

On 3/29/2016 10:37 AM, andy pugh wrote:

On 29 March 2016 at 16:33,   wrote:


Thinking over what all I did last night, I think IF joint 0 or its linked joint 
3 were manipulated in Joint Mode, it would work but then immediately throw a 
Following Error when entering Joint Mode (or, IIRC, going to the MDI window).  
Without ANY sort of move involved.

Any idea what would cause that?

This might just be a side-effect of how the command and feedback pins
are connected in HAL.
What pin is connected to axis.0.motor-position-fb ?



# ###
#
# HAL file for HostMot2 with 4 steppers
#
# Derived from Ted Hyde's original hm2-servo config
#
# Based up work and discussion with Seb & Peter & Jeff
# GNU license references - insert here. www.linuxcnc.org
#
#
# 
# Firmware files are in /lib/firmware/hm2/7i43/
# Must symlink the hostmot2 firmware directory of sanbox to
# /lib/firmware before running EMC2...
# sudo ln -s $HOME/emc2-sandbox/src/hal/drivers/mesa-hostmot2/firmware 
/lib/firmware/hm2
#
# See also:
# 

# and http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?HostMot2
#
# #


# ###
# Core EMC/HAL Loads
# ###


# kinematics
#loadrt trivkins
loadrt gantrykins coordinates=XYZX

# Settings for gantrykins
setp gantrykins.joint-0 0
setp gantrykins.joint-1 1
setp gantrykins.joint-2 2
setp gantrykins.joint-3 0

# motion controller
loadrt [EMCMOT]EMCMOT servo_period_nsec=[EMCMOT]SERVO_PERIOD 
num_joints=[TRAJ]AXES

# standard components
loadrt pid num_chan=4

# hostmot2 driver
loadrt hostmot2

# load low-level driver
loadrt [HOSTMOT2](DRIVER) config=[HOSTMOT2](CONFIG)

# XHC-HB04 driver
#loadusr -W xhc-hb04 -H -I /usr/share/linuxcnc/hallib/xhc-hb04-layout1.cfg 

setp hm2_[HOSTMOT2](BOARD).0.watchdog.timeout_ns 2500


# 
# THREADS
# 

addf hm2_[HOSTMOT2](BOARD).0.read servo-thread
addf motion-command-handler   servo-thread
addf motion-controllerservo-thread
addf pid.0.do-pid-calcs   servo-thread
addf pid.1.do-pid-calcs   servo-thread
addf pid.2.do-pid-calcs   servo-thread
addf pid.3.do-pid-calcs   servo-thread
#addf pid.4.do-pid-calcs   servo-thread
addf hm2_[HOSTMOT2](BOARD).0.writeservo-thread
#addf hm2_[HOSTMOT2](BOARD).0.pet_watchdog servo-thread
   
# Hacks to enable the DPLL sampling of the stepgen position:

# setp hm2_[HOSTMOT2](BOARD).0.raw.write_address 0x2A00
# Enable and select timer channel 1:
#setp hm2_[HOSTMOT2](BOARD).0.raw.write_data 0x9000  
# Disable:
#setp hm2_[HOSTMOT2](BOARD).0.raw.write_data 0x
#setp hm2_[HOSTMOT2](BOARD).0.raw.write_strobe true
# latch 50 usec beforw nominal read time:

setp hm2_[HOSTMOT2](BOARD).0.dpll.01.timer-us -50
setp hm2_[HOSTMOT2](BOARD).0.stepgen.timer-number 1

# ##
# Axis-of-motion Specific Configs (not the GUI)
# ##


# 
# X [0] Axis
# 

# axis enable chain
newsig emcmot.00.enable bit
sets emcmot.00.enable FALSE

net emcmot.00.enable <= axis.0.amp-enable-out 
net emcmot.00.enable => hm2_[HOSTMOT2](BOARD).0.stepgen.00.enable pid.0.enable


# position command and feedback
net emcmot.00.pos-cmd axis.0.motor-pos-cmd => pid.0.command
net emcmot.00.vel-cmd axis.0.joint-vel-cmd => pid.0.command-deriv
net motor.00.pos-fb <= hm2_[HOSTMOT2](BOARD).0.stepgen.00.position-fb 
axis.0.motor-pos-fb pid.0.feedback
net motor.00.command pid.0.output 
hm2_[HOSTMOT2](BOARD).0.stepgen.00.velocity-cmd
setp pid.0.error-previous-target true


# timing parameters
setp hm2_[HOSTMOT2](BOARD).0.stepgen.00.dirsetup[AXIS_0]DIRSETUP
setp hm2_[HOSTMOT2](BOARD).0.stepgen.00.dirhold [AXIS_0]DIRHOLD

setp hm2_[HOSTMOT2](BOARD).0.stepgen.00.steplen [AXIS_0]STEPLEN
setp hm2_[HOSTMOT2](BOARD).0.stepgen.00.stepspace   [AXIS_0]STEPSPACE

setp hm2_[HOSTMOT2](BOARD).0.stepgen.00.position-scale  [AXIS_0]SCALE

setp hm2_[HOSTMOT2](BOARD).0.stepgen.00.maxvel  [AXIS_0]STEPGEN_MAX_VEL
setp hm2_[HOSTMOT2](BOARD).0.stepgen.00.maxaccel[AXIS_0]STEPGEN_MAX_ACC

setp hm2_[HOSTMOT2](BOARD).0.stepgen.00.step_type   0
setp hm2_[HOSTMOT2](BOARD).0.stepgen.00.control-type1

# set PID loop gains from inif