Spindle speed via dsp??

[7of9]

Hi,

I own a chinese built cnc router. It is equipped with an 3,2kw spindle, a dsp controller an a spindle inverter.
At the moment my dsp and the inverter are ignoring the s-controller data to control the spindle rotation speed.

Is there any possibility to get the spindle controlled by software/dsp?

thx in advance

best

Kai

[SkipW]

Hi Kai,

I asked that same question not too long ago and I was told "the DSP controller does not support S codes, for S code it needs analog signal, while the dsp does not have, it only gets digital signals."

Hope that helps.

[7of9]

Originally Posted by SkipW Hi Kai, I asked that same question not too long ago and I was told "the DSP controller does not support S codes, for S code it needs analog signal, while the dsp does not have, it only gets digital signals." Hope that helps.

wow - this would be a big disadvantage! But...
The Inverter needs analog signals ok - but isnt there any possibility to transform the digital output from the dsp into an analog signal for the inverter?
For me it sounds not impossible - but without having any idea how to manage.
Perhaps there is somebody outthere who "invented" a workaround to manage it?!

best

Kai

[rocket67]

Check out the Thread in this link

http://www.cnczone.com/forums/excite..._excitech.html

Look in particular to Taney`s post ( no.9 ). Might help you.

There is also a link to an English language DSP manual on the Excitech Threads.

Rocket.

[7of9]

Originally Posted by rocket67 Check out the Thread in this link http://www.cnczone.com/forums/excite..._excitech.html Look in particular to Taney`s post ( no.9 ). Might help you. There is also a link to an English language DSP manual on the Excitech Threads. Rocket.

Hi Rocket,

thx for the link, but after reading the thrad i am as confused as before...
I heard the statement very often that the dsp is not able to control the spindle/inverter.
There are two things wich make me think that there should be a possibility:
My dsp displays the spindle speed and there is a point in the menu


Proc Spd 3000.00
Trvl Spd 3000.00
ZDown Rat 1.00
Spd Rati 1.00
Spd Grad 6
X Axis: 400.00
Y Axis: 200.00
Z Axis: 400.00
A Up mm 100.00
Drilllval 1.00

wich in my understanding is responsible for the spindle - isnt it?

Still confused and hoping

Kai

[king9558]

Hi Kai:
the dsp controller supports most G codes, M codes and F code. but it does not support S codes in the g code files. And the Dsp controller company has no plan to make such function controller.
Alan