On 5 Oct 2007 at 10:01, [EMAIL PROTECTED] wrote:
Thanks Sam,
It wasn't missing but it was set to 1.2... As soon as I set it to 6.7
Things started to look much better. I knew it would be something
simple that I was overlooking... Now to play with it for a while...
Thanks
John
> in your axis sect
Stephen Wille Padnos wrote:
>[snip]
>
>>My config is:
>>BASE_PERIOD =15000
>>
>>
>This means that you can get one step every 30 microseconds, or about
>3 steps per second.
>
>
Of course, if I had had sufficient caffeine, I might have noticed that
3/3000 = 11.111,
John Thornton wrote:
>I have a CNC4PC C1G parallel port interface card driving a Gecko 203v.
>I have a 28vdc power supply and I am running the stepper without any
>load just to get my configs setup... The highest velocity I can get is about
>70 as reported on the Axis screen no matter what I set F
in your axis section - it seems your missing
MAX_VELOCITY = 6.7
(you want some stepgen headroom.)
sam
- Original Message -
From: "John Thornton" <[EMAIL PROTECTED]>
To:
Sent: Friday, October 05, 2007 11:47 AM
Subject: [Emc-users] Max Speed
>I have a CNC4P
I have a CNC4PC C1G parallel port interface card driving a Gecko 203v.
I have a 28vdc power supply and I am running the stepper without any
load just to get my configs setup... The highest velocity I can get is about
70 as reported on the Axis screen no matter what I set F at.
If I do a MDI G1 F100
Stephen asked:
|Is there any particular reason why you chose 2,400,000 for the servo and
|traj periods? I'm sure it will work for these speeds (and it does
|reduce the CPU load marginally), but it shouldn't be necessary to
|lengthen these. Can you share your reason for changing them?
Stephen,
Cecil Thomas wrote:
>Thanks Stephen and Manfredi for the help.
>
>For those with similar setups this might be helpful:
>Here is my latest (I hesitate to say final) .ini data
>This is for a 1.7 GHz pentium 3 with a 400 MHz bus
>
>
Hopefully it's final :)
>2000 steps/rev servo, 5 rev/inch lead s
Thanks Stephen and Manfredi for the help.
For those with similar setups this might be helpful:
Here is my latest (I hesitate to say final) .ini data
This is for a 1.7 GHz pentium 3 with a 400 MHz bus
2000 steps/rev servo, 5 rev/inch lead screw, 4:1 gear down motor to
screw 40,000 input scale
Cecil Thomas wrote:
>Thanks for the help.
>I set my base period to 15,000, servo period to 60,000 and traj
>period to 600,000.
>
>
Ack!
Unless you're running a servo machine at 1000m/min (yes, 1 kilometer per
minute), you don't need a 60 microsecond servo rate. For most "normal"
machines -
Thanks for the help.
I set my base period to 15,000, servo period to 60,000 and traj
period to 600,000.
I lowered my max vel to .75 (45 inches per minute, plenty fast
enough). Everything seems happy except the realtime error which I
have not run to ground yet.
The RT error was there at the lar
achine Controller (EMC)"
>
>To: "Enhanced Machine Controller (EMC)"
>Subject: [Emc-users] Max speed too fast
>Date: Thu, 23 Aug 2007 01:11:15 -0500
>
>I am using EMC2 and a gecko servo drive to drive a servo I have
>mounted on my Millrite.
>When I set the max s
I am using EMC2 and a gecko servo drive to drive a servo I have
mounted on my Millrite.
When I set the max speed to 1.0 (I think that is 1 ips or 60 ipm) I
get an error saying that the velocity is too high.
I the motor/encoder/gecko drive require 2000 steps per rev and the
lead screw is 5 tpi an
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