Re: [Emc-users] Serial Port access

[John Dammeyer]

BTW, there's also this:
https://forum.linuxcnc.org/forum/18-computer/22562-arduino-based-usb-pendant-for-linuxcnc


> -Original Message-
> From: John Dammeyer [mailto:jo...@autoartisans.com]
> Sent: September-08-21 8:28 PM
> To: Enhanced Machine Controller (EMC)
> Subject: [Emc-users] Serial Port access
> 
> I'm starting the next phase of a small project.  I just about have the power 
> draw bar ready to mount.It's controlled by a small
> processor with two buttons for load and release which runs the air valves 
> which move the pneumatic cylinder and spin butterfly
> impact wrench.
> 
> To load/release from LinuxCNC I'd like to be able to put a couple of buttons 
> on the AXIS user interface.
> 
> The load button needs to create and send out a serial port the message 
> "t418102\r" and to release "t418104\r".  When AXIS first
> starts I'd also like to send out "C\r", "S5\r" and "O\r".  When AXIS closes 
> to send out a "O\r".  And obviously there has to be a way to
> select which serial port if there are a few.  (The one I want to use is USB 
> based).
> 
> In the long run I'd also like to be able to receive from the serial port.  
> Messages like "t718105\r" for example but that's not critical to
> start with.
> 
> I've been reading
> http://linuxcnc.org/docs/2.4/html/hal_comp.html
> 
> And I imagine there are a few other documents out there too.Is there a 
> simple tutorial for adding a button to the AXIS screen and
> having the button press generate a message out a serial port?
> 
> Thanks
> John
> 
> 
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[Emc-users] Serial Port access

[John Dammeyer]

I'm starting the next phase of a small project.  I just about have the power 
draw bar ready to mount.It's controlled by a small processor with two 
buttons for load and release which runs the air valves which move the pneumatic 
cylinder and spin butterfly impact wrench.
 
To load/release from LinuxCNC I'd like to be able to put a couple of buttons on 
the AXIS user interface. 
 
The load button needs to create and send out a serial port the message 
"t418102\r" and to release "t418104\r".  When AXIS first starts I'd also like 
to send out "C\r", "S5\r" and "O\r".  When AXIS closes to send out a "O\r".  
And obviously there has to be a way to select which serial port if there are a 
few.  (The one I want to use is USB based).
 
In the long run I'd also like to be able to receive from the serial port.  
Messages like "t718105\r" for example but that's not critical to start with.
 
I've been reading 
http://linuxcnc.org/docs/2.4/html/hal_comp.html
 
And I imagine there are a few other documents out there too.Is there a 
simple tutorial for adding a button to the AXIS screen and having the button 
press generate a message out a serial port?  
 
Thanks
John
 

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Re: [Emc-users] VFD Issues

[Peter C. Wallace]

On Wed, 8 Sep 2021, Todd Zuercher wrote:


Date: Wed, 8 Sep 2021 20:56:27 +
From: Todd Zuercher 
Reply-To: "Enhanced Machine Controller (EMC)"

To: "Enhanced Machine Controller (EMC)" 
Subject: [Emc-users] VFD Issues

I was working at upgrading the spindle on a machine.  The old spindle was 9kw 
the new one is 11kw.  This is a Yaskawa 626MC5 drive and a 24000rpm 11kw router 
spindle.  At first I tired test running it without adjusting any of the VFD 
settings.  The first test, running a spindle run in program, failed on the 
first rpm step after a couple minutes, with a VFD over current alarm.  I then 
dug into the VFD settings, and made some adjustments (mostly adjusting the max 
current settings.) same result.  Then changed the base voltage setting, first 
try I went the wrong way, and that made the current draw worse, so I shut it 
down right away before any alarms.  I then moved the base voltage down, and 
that lowed the low speed current draw to within the specs for the VFD.  Next 
thing I notice I smell something hot, I quick open up the cabinet and the 
braking resistor is melting down.  The drive is rated for 22.5A and according 
to its screen it was only outputting about 17-18A and wasn't even braking at 
the time.

Where did I go wrong?  I've ran undersized VFDs numerous times without issue, I 
thought it just limited your max power.  Did I mess something up in the drive 
earlier when I set the base voltage wrong and the drive was trying to output 
30+A?

We have a new braking resistor ordered, but what about the drive?  I'm afraid 
to just hook it up and try it, for fear it will do it again.  Can I test it 
without the braking resitor?

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031


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Is it possible the brake voltage is set too low so its
stuck-on at your nominla line voltage?


Peter Wallace
Mesa Electronics


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Re: [Emc-users] VFD Issues

[andrew beck]

Todd I have a 11kw yaskawa 616 g5 drive and a 9kw hsd biesse high speed
spindle.

Do you want me to chase down the parameters?

Also what deceleration settings do you have?  And what size heat sink.
Maybe you are slowing it down faster that before

On Thu, 9 Sep 2021, 10:33 Todd Zuercher,  wrote:

> I was working at upgrading the spindle on a machine.  The old spindle was
> 9kw the new one is 11kw.  This is a Yaskawa 626MC5 drive and a 24000rpm
> 11kw router spindle.  At first I tired test running it without adjusting
> any of the VFD settings.  The first test, running a spindle run in program,
> failed on the first rpm step after a couple minutes, with a VFD over
> current alarm.  I then dug into the VFD settings, and made some adjustments
> (mostly adjusting the max current settings.) same result.  Then changed the
> base voltage setting, first try I went the wrong way, and that made the
> current draw worse, so I shut it down right away before any alarms.  I then
> moved the base voltage down, and that lowed the low speed current draw to
> within the specs for the VFD.  Next thing I notice I smell something hot, I
> quick open up the cabinet and the braking resistor is melting down.  The
> drive is rated for 22.5A and according to its screen it was only outputting
> about 17-18A and wasn't even braking at the time.
>
> Where did I go wrong?  I've ran undersized VFDs numerous times without
> issue, I thought it just limited your max power.  Did I mess something up
> in the drive earlier when I set the base voltage wrong and the drive was
> trying to output 30+A?
>
> We have a new braking resistor ordered, but what about the drive?  I'm
> afraid to just hook it up and try it, for fear it will do it again.  Can I
> test it without the braking resitor?
>
> Todd Zuercher
> P. Graham Dunn Inc.
> 630 Henry Street
> Dalton, Ohio 44618
> Phone:  (330)828-2105ext. 2031
>
>
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[Emc-users] VFD Issues

[Todd Zuercher]

I was working at upgrading the spindle on a machine.  The old spindle was 9kw 
the new one is 11kw.  This is a Yaskawa 626MC5 drive and a 24000rpm 11kw router 
spindle.  At first I tired test running it without adjusting any of the VFD 
settings.  The first test, running a spindle run in program, failed on the 
first rpm step after a couple minutes, with a VFD over current alarm.  I then 
dug into the VFD settings, and made some adjustments (mostly adjusting the max 
current settings.) same result.  Then changed the base voltage setting, first 
try I went the wrong way, and that made the current draw worse, so I shut it 
down right away before any alarms.  I then moved the base voltage down, and 
that lowed the low speed current draw to within the specs for the VFD.  Next 
thing I notice I smell something hot, I quick open up the cabinet and the 
braking resistor is melting down.  The drive is rated for 22.5A and according 
to its screen it was only outputting about 17-18A and wasn't even braking at 
the time.

Where did I go wrong?  I've ran undersized VFDs numerous times without issue, I 
thought it just limited your max power.  Did I mess something up in the drive 
earlier when I set the base voltage wrong and the drive was trying to output 
30+A?

We have a new braking resistor ordered, but what about the drive?  I'm afraid 
to just hook it up and try it, for fear it will do it again.  Can I test it 
without the braking resitor?

Todd Zuercher
P. Graham Dunn Inc.
630 Henry Street
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031


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