Re: [Emc-users] armhf packages for Debian Stretch?

2017-08-20 Thread 王若溪 
May be a Raspberry Pi could be used as a build machine for Stretch, armhf,
as Raspbian based on Debian Stretch is just released. I've successfully
built LinuxCNC on an RPi 3B running on Raspbian Stretch and run it on a BBB
running on Debian Stretch.
Interestingly, RPi has 64bit ARM CPU while Raspbian is armhf architecture.



2017-08-16 11:09 GMT+08:00 Sebastian Kuzminsky :

> On 08/15/2017 09:05 PM, 王若溪 wrote:
>
>> Yes, you can build LinuxCNC for Stretch on armhf.  The only reason we
>>> don't provide these packages is we don't have a dedicated Stretch armhf
>>> build machine.
>>>
>>
>> Here are instructions on building the debs yourself.  This assumes a
>>> native build, not a cross build, so running everything on the BeagleBone
>>> Black:
>>>
>>
>> Thanks a lot.
>>
>> Is BBB's 512MB memory enough to build LinuxCNC? And I'm curious that why
>> cross build is not used in dedicated build machine.
>>
>
> I've built LinuxCNC on a BBB, but I might have had swap enabled, I don't
> remember.
>
> We don't cross-build because we want to run the test suite, and that
> requires executing the compiled binaries, which doesn't work in a
> cross-build environment.
>
>
> Is building on arm64 architecture such as Jetson TX1 considered as cross
>> build? I happen to have an idle Jetson TX1 with 4GB memory, don't know if
>> useful.
>>
>
> Building for arm64 on arm64 is not a cross build.  Building for non-arm64
> on arm64 would be a cross build.
>
> I don't have any arm64 machines, so i've never tried building/testing
> LinuxCNC on one.
>
>
> --
> Sebastian Kuzminsky
>
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Re: [Emc-users] Huanyang vfd reverse

2017-08-20 Thread Gene Heskett 
On Sunday 20 August 2017 03:40:56 David Berndt wrote:

> I'm having some issues commissioning my HY VFD. 4kw unit driving a 5hp
> 3450rpm motor at 30hz max frequency (temporary 2 pole motor, 4 pole
> motor is in the mail). Works great in "forward", but when it accels in
> reverse it trips out and throws an E.OC.N error. Which appears to be
> an over current error.
>
> I've flipped 2 leads to the motor, reversing the physical rotation and
> it still works great in vfd "forward", proving that the motor and
> mechanical aspects work in both directions. But the VFD does not.
> Accel times are quite conservative/slow. Problem happens about 1
> second into acceleration. No clue There don't seem to be any
> relevant settings. Problem happens regardless of control method,
> modbus or operator panel.
>
> Unrelated, but wow, at low speeds this VFD seems to throw off a ton of
> interference. The symptom I've noticed is that my usb mouse connected
> to the PC in the control cabinet that also houses the VFD basically
> gives up on life if the motor is running below 15hz. USB dongle modbus
> was fairly impacted as well until I grounded the cable shield to the
> pc case.

I had noise worse than the coaches megaphone, so I put a 20 amp rated 
Corcom brick wall in the AC line feed.  Works a treat.

> Just to make this slighlty more on topic. Is there a config somewhere
> for maximum spindle RPM? With the drive configured correctly it won't
> overspeed the motor, but it would be nice if the software was aware of
> a top end for spindle speed as well.
>
What are you using for an interface between the pwm (or pdm) gen, I am 
assuming the pwmgen is in a mesa interface card?.

I had been assured by the ebay critter that sold me the 1.5 hp vfd, 
hooked to a 1 horse 3 phase motor from a 30 yo compressor, that the 
analog input filtering was good and that I could feed the analog input 
(0 <-> 5 volt range, it has both 5 volt and 10 volt inputs) directly 
from the pwm generator, but I was unable to get good smooth control.

My motor is a 4 pole, and at light load it has been spun north of 7K 
rpms.  No damage if the internal fans don't throw blades, but because of 
motor winding inductance, current draw is well under an amp/phase so 
usable torque is an oxymoron, there isn't much. Practical limit for my 
setup is about 140hz. From 8hz to 140hz doesn't make me switch drive 
belts from 1st gear, no backgear.

I had a mesa spinx-1 I had taken out of TLM because I was putting in a 40 
lb supply and one of Jon's (Pico Systems pwm-servo amplifiers, great 
device BTW), so I pulled it out and hooked it up.  Works Perfect.  With 
a bit of tuning in the vfd, I can even do rigid tapping on the old grey 
Sheldon up to around 200-250 spindle rpms. Above that and the overshoot 
at reversal exceeds a full turn of the chuck.

The spinx-1 needs separate fwd and rev signals, not a problem to hack 
that in your .hal file, but yell if you need some snippets of hal code, 
I might be able to help.

> Thanks,
> Dave


Cheers, Gene Heskett
-- 
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Re: [Emc-users] Huanyang vfd reverse

2017-08-20 Thread Eric Keller 
Had you done that before?  Resetting the drive is the first step in all the
directions that I have seen.
I'm happy with mine, but I wish I could add an external braking resistor.

On Sun, Aug 20, 2017 at 10:45 AM, David Berndt  wrote:

> Sigh, resetting the drive to defaults cured the reverse issue. No idea
> what setting could have been set to cause some sort of a reverse bias or ??
> issue.
>
>
> On Sun, 20 Aug 2017 03:40:56 -0400, David Berndt 
> wrote:
>
> I'm having some issues commissioning my HY VFD. 4kw unit driving a 5hp
>> 3450rpm motor at 30hz max frequency (temporary 2 pole motor, 4 pole motor
>> is in the mail). Works great in "forward", but when it accels in reverse it
>> trips out and throws an E.OC.N error. Which appears to be an over current
>> error.
>>
>> I've flipped 2 leads to the motor, reversing the physical rotation and it
>> still works great in vfd "forward", proving that the motor and mechanical
>> aspects work in both directions. But the VFD does not. Accel times are
>> quite conservative/slow. Problem happens about 1 second into acceleration.
>> No clue There don't seem to be any relevant settings. Problem happens
>> regardless of control method, modbus or operator panel.
>>
>> Unrelated, but wow, at low speeds this VFD seems to throw off a ton of
>> interference. The symptom I've noticed is that my usb mouse connected to
>> the PC in the control cabinet that also houses the VFD basically gives up
>> on life if the motor is running below 15hz. USB dongle modbus was fairly
>> impacted as well until I grounded the cable shield to the pc case.
>>
>> Just to make this slighlty more on topic. Is there a config somewhere for
>> maximum spindle RPM? With the drive configured correctly it won't overspeed
>> the motor, but it would be nice if the software was aware of a top end for
>> spindle speed as well.
>>
>>
>> Thanks,
>> Dave
>>
>> 
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>
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> 
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Re: [Emc-users] Huanyang vfd reverse

2017-08-20 Thread David Berndt 
Sigh, resetting the drive to defaults cured the reverse issue. No idea  
what setting could have been set to cause some sort of a reverse bias or  
?? issue.


On Sun, 20 Aug 2017 03:40:56 -0400, David Berndt   
wrote:


I'm having some issues commissioning my HY VFD. 4kw unit driving a 5hp  
3450rpm motor at 30hz max frequency (temporary 2 pole motor, 4 pole  
motor is in the mail). Works great in "forward", but when it accels in  
reverse it trips out and throws an E.OC.N error. Which appears to be an  
over current error.


I've flipped 2 leads to the motor, reversing the physical rotation and  
it still works great in vfd "forward", proving that the motor and  
mechanical aspects work in both directions. But the VFD does not. Accel  
times are quite conservative/slow. Problem happens about 1 second into  
acceleration. No clue There don't seem to be any relevant settings.  
Problem happens regardless of control method, modbus or operator panel.


Unrelated, but wow, at low speeds this VFD seems to throw off a ton of  
interference. The symptom I've noticed is that my usb mouse connected to  
the PC in the control cabinet that also houses the VFD basically gives  
up on life if the motor is running below 15hz. USB dongle modbus was  
fairly impacted as well until I grounded the cable shield to the pc case.


Just to make this slighlty more on topic. Is there a config somewhere  
for maximum spindle RPM? With the drive configured correctly it won't  
overspeed the motor, but it would be nice if the software was aware of a  
top end for spindle speed as well.



Thanks,
Dave

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[Emc-users] Huanyang vfd reverse

2017-08-20 Thread David Berndt 
I'm having some issues commissioning my HY VFD. 4kw unit driving a 5hp  
3450rpm motor at 30hz max frequency (temporary 2 pole motor, 4 pole motor  
is in the mail). Works great in "forward", but when it accels in reverse  
it trips out and throws an E.OC.N error. Which appears to be an over  
current error.


I've flipped 2 leads to the motor, reversing the physical rotation and it  
still works great in vfd "forward", proving that the motor and mechanical  
aspects work in both directions. But the VFD does not. Accel times are  
quite conservative/slow. Problem happens about 1 second into acceleration.  
No clue There don't seem to be any relevant settings. Problem happens  
regardless of control method, modbus or operator panel.


Unrelated, but wow, at low speeds this VFD seems to throw off a ton of  
interference. The symptom I've noticed is that my usb mouse connected to  
the PC in the control cabinet that also houses the VFD basically gives up  
on life if the motor is running below 15hz. USB dongle modbus was fairly  
impacted as well until I grounded the cable shield to the pc case.


Just to make this slighlty more on topic. Is there a config somewhere for  
maximum spindle RPM? With the drive configured correctly it won't  
overspeed the motor, but it would be nice if the software was aware of a  
top end for spindle speed as well.



Thanks,
Dave

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