Geert De Pecker wrote:
> Next problem: the analog voltage on the C11 board doesn't go to the max
> input voltage. I measured the voltage across the sherline potentiometer
> and it is 9.2 volts. With the bench supply set to 9.2 and attached to
> the analog voltage of the board, the max output is 8.2
Kirk,
You pointed me in the right direction. With siggen and scale, I was able
to produce a frequency from the spindle control. I posted the mill.ini and
mill.hal on http://users.skynet.be/gedp/FILES/index.html.
The signal isn't very stable because I had to put it in the servo-thread
(probably ne
Kirk,
To do threading on the lathe is the end goal. I'm still in the
development phase for the encoder bit. Want to make it myself
(see part of drawing at http://users.skynet.be/gedp/FILES/index.html).
Still some time away though.
Yes the C11 is full throttle.
If you're interested in the files,
On Mon, 2007-12-24 at 20:13 +0100, Geert De Pecker wrote:
> Kirk,
>
> Thanks for the info. I'll check it out.
>
> I don't think we need 24kHz. The default pwm signal is 100Hz and gave me
> 2.5 volts. I changed the frequence in the hal config to 200 Hz and the
> output was approx 5V, so I guess th
Kirk,
Thanks for the info. I'll check it out.
I don't think we need 24kHz. The default pwm signal is 100Hz and gave me
2.5 volts. I changed the frequence in the hal config to 200 Hz and the
output was approx 5V, so I guess the max voltage on the C11 board is
reached at 400Hz.
Never experimetd wi
On Mon, 2007-12-24 at 19:01 +0100, Geert De Pecker wrote:
> It is the C11 multifunction board. Main reasons where the isolated
> analog voltage and the relay to enable me to stop the motor when the job
> is finished.
>
>From a brief look at the documentation, it looks like you need one of
the par
It is the C11 multifunction board. Main reasons where the isolated
analog voltage and the relay to enable me to stop the motor when the job
is finished.
Kirk Wallace wrote:
> Which CNC4PC board do you have?
>
> On Mon, 2007-12-24 at 18:51 +0100, Geert De Pecker wrote:
>> Kirk,
>>
>> Problem is th
Which CNC4PC board do you have?
On Mon, 2007-12-24 at 18:51 +0100, Geert De Pecker wrote:
> Kirk,
>
> Problem is that I bought the cnc4pc board with the speed controller in
> mind. The doc said it supported emc, so I guess there must be a way.
> Arturo of cnc4pc is looking into it.
>
> So if I c
Kirk,
Problem is that I bought the cnc4pc board with the speed controller in
mind. The doc said it supported emc, so I guess there must be a way.
Arturo of cnc4pc is looking into it.
So if I can avoid adding extra hardware, this would be nice.
I agree if you want very fine control, your solution
On Mon, 2007-12-24 at 14:11 +0100, Geert De Pecker wrote:
> Hi all,
>
> I installed a CNC4PC breakout board that has an analog voltage output
> available for spindle speed control. However, this board works based
> on a frequency to voltage converter and not like standard emc duty cycle
> generate
Hi all,
I installed a CNC4PC breakout board that has an analog voltage output
available for spindle speed control. However, this board works based
on a frequency to voltage converter and not like standard emc duty cycle
generated by pwmgen.
I was looking into using siggen to create a speed contro
Kirk Wallace wrote:
> On Tue, 2007-09-11 at 11:25 -0700, Peter C. Wallace wrote:
>
>>SNIP
>>
>>>I have limited knowledge and experience with electronics, but here is
>
> ... snip
>
>>>Kirk Wallace
>>>
>>
>>Doesnt EMC have a PDM output option?
>>This would be _much_ easier to filter than PWM.
Isn
Kirk Wallace wrote:
> As far as the "up to speed" signal - for
> tapping, the active axis is electronically geared to the spindle, so no
> matter what the spindle is doing the axis will try to follow it. I am
> thinking that the "up to speed" signal might be used for fault sensing
> for spindles w
On Tue, 2007-09-11 at 11:25 -0700, Peter C. Wallace wrote:
> SNIP
> >
> > I have limited knowledge and experience with electronics, but here is
... snip
> > Kirk Wallace
> >
>
> Doesnt EMC have a PDM output option?
> This would be _much_ easier to filter than PWM.
>
> With PDM a ~.1 second time c
At 01:25 PM 9/11/2007, you wrote:
>Doesnt EMC have a PDM output option?
>This would be _much_ easier to filter than PWM.
>
>With PDM a ~.1 second time constant filter should be fine
>
>
>
> >
>
>Peter Wallace
>Mesa Electronics
>
>(\__/)
>(='.'=) This is Bunny. Copy and paste bunny into your
>(")_(
SNIP
>
> I have limited knowledge and experience with electronics, but here is
> some of my recent experience with my spindle VFD.
>
> Just for testing, I used a parallel port out put with an RC filter and
> found that to smooth the signal, the capacitor had to be quite large
> which also slowed th
On Mon, 2007-09-10 at 22:28 +, Neil Buck wrote:
> I'm half way through retrofitting a Cincinnati VMC with a MESA m5i20 setup. I
> would welcome some advice as to the best way to control the spindle. My goal
> is
> to be able to do rigid tapping and fully automatic tool changes. My thoughts
>
Peter, Anders
In my case 8 axis support in the driver would be nice for the next project I'm
working on (conversion of a Wessel CNC router to EMC control + AC Servos +
Perske spindle) although for the VMC I'm retrofitting at the moment I need all
the IO I can get. The IO for the toolchanger is lo
Chris,
Thanks for the info. I'll give the filtered PWM option a try. I'm in the process
of hooking up the spindle encoder at the moment so will soon see what resolution
it's got. I can see from the wiring diagram that it's A & B quad and index but
I've no idea what resolution. The axis motors all
> On Mon, Sep 10, 2007 at 10:28:37PM +, Neil Buck wrote:
>
>>I'm half way through retrofitting a Cincinnati VMC with a MESA m5i20 setup. I
>>would welcome some advice as to the best way to control the spindle. My goal
>>is
>>to be able to do rigid tapping and fully automatic tool changes. My
> Dont know if the driver has been updated to work with it, but thre has been a
> 8 axis 5I20 HOSTMOT configuration around for some time. (If you dont need
> more than 1 connectors worth of I/O)
> Peter Wallace
the driver has not been updated for 4 vs. 8-axis HOSTMOT.
Likewise it would be nice
On Mon, 10 Sep 2007, Neil Buck wrote:
> Date: Mon, 10 Sep 2007 22:28:37 + (UTC)
> From: Neil Buck <[EMAIL PROTECTED]>
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: emc-users@lists.sourceforge.net
> Subject: [Emc-users] Spindle Speed Control
On Tue, Sep 11, 2007 at 08:57:48AM -0500, Chris Radek wrote:
>
> If your spindle drive can do this (you can test
> with S300 M3, then M4) it will tap just fine. You should pick a
> speed that allows the spindle to reverse in "a few" turns.
One more thing I remember hearing: VFDs may need a braki
On Mon, Sep 10, 2007 at 10:28:37PM +, Neil Buck wrote:
> I'm half way through retrofitting a Cincinnati VMC with a MESA m5i20 setup. I
> would welcome some advice as to the best way to control the spindle. My goal
> is
> to be able to do rigid tapping and fully automatic tool changes. My thoug
I'm half way through retrofitting a Cincinnati VMC with a MESA m5i20 setup. I
would welcome some advice as to the best way to control the spindle. My goal is
to be able to do rigid tapping and fully automatic tool changes. My thoughts are
that since I am planning on adding a 4th rotary axis very so
On Tue, Jun 19, 2007 at 12:54:47AM -0500, RogerN wrote:
>
> Would it work to just use PID to control the spindle speed (not
> position)?
Sure. Because the velocity feedback granularity would be (inversely)
proportional to the encoder resolution, you'd want the highest res
encoder possible. Or,
- Original Message -
From: "Chris Radek" <[EMAIL PROTECTED]>
To: "Enhanced Machine Controller (EMC)"
Sent: Tuesday, June 19, 2007 12:22 AM
Subject: Re: [Emc-users] Spindle speed control & changing gears.
>
> But what you want to do really i
On Tue, Jun 19, 2007 at 12:03:30AM -0500, RogerN wrote:
> I plan to use spindle speed control in my part programs. I also would
> like to use the best spindle gear selection for the proper cutting speed
> and to best utilize the horsepower I have available. If my part program
> sets a spindle
I plan to use spindle speed control in my part programs. I also would
like to use the best spindle gear selection for the proper cutting speed
and to best utilize the horsepower I have available. If my part program
sets a spindle speed of 500RPM, how will EMC2 handle it if I'm in a gear
where
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