[Vegabond]

Hello.

What PDxxx do i need to change on, and how is it work?
I have read in the manual, but i don`t understand it correct..


Thanks.


Robert.

[hub]

Do you have a PDF Manual of the VFD in question?

[Vegabond]

Yes

[hub]

Ok, that's a very bad manual, missing a lot of descriptions...
There is not mention (that I could find) that says what is the difference btw accel1 - accel4 ..

So, just try which one works, start from 1.

Set these:
PD014 Accel. Time 1 0.1~6500.0S *
PD015 Decel. Time 1 0.1~6500.0S *
PD016 Accel. Time 2 0.1~6500.0S *
PD017 Decel. Time 2 0.1~6500.0S *
PD018 Accel. Time 3 0.1~6500.0S *
PD019 Decel. Time 3 0.1~6500.0S *
PD020 Accel. Time 4 0.1~6500.0S *
PD021 Decel. Time 4 0.1~6500.0S *

Hub

[hub]

And if you use S-Curve:
PD043 S-Curve Time

[Vegabond]

And if you use S-Curve:
PD043 S-Curve Time

Thanks , it work!


Greetings from Robert.

[hub]

Thanks , it work!


Greetings from Robert.

Glad to hear!

[Vegabond]

Maby you can take a look at this one too!?
http://www.cnczone.com/forums/machin...ge_before.html

Greetings from Robert.

[hub]

Maby you can take a look at this one too!?
http://www.cnczone.com/forums/machin...ge_before.html

Greetings from Robert.

Sure, I did. But Gerry already answered it correctly I think.
There is a buffer memory that contains lines of G-code.
They are already sent to the "controller" with the selected speed.
It has to process them first I think. Not sure since I don't know the exact way of how it's programmed.

Also, the step-pulsing is most likely a very high priority processing thread, and the speed change is likely a low one.

Just guessing here, but that's the most likely reason in my opinion.