Dynomotion

Group: DynoMotion Message: 8881 From: ricochetproducts Date: 1/11/2014
Subject: DAC Spindle Control
Attachments :
Hi Tom,  I have my spindle VFD connected to dac 7 and the tool setup screen is set up as in the attached .PNG    max rpm of the spindle should be 3490rpm @ +10.   I cannot get the output of the dac to change when I send it an S command.  I can change the numbers around (min / max) and the dac will change (VFD will respond) I can only get the dac to respond either 0 or +10 volt Nothing in between.  I assume that my scaling is the problem.  I have looked through the forum and the manual but cannot find what I need.  Will you point me in the right direction or explain what I need to do?


Regards
Steve
   @@attachment@@
Group: DynoMotion Message: 8882 From: TK Date: 1/11/2014
Subject: Re: DAC Spindle Control [1 Attachment]
Hi Steve,

Try a scale of -2047/3490 = -0.5865

Regards

TK

On Jan 11, 2014, at 4:24 AM, <steveklemp@...> wrote:

 

Hi Tom,  I have my spindle VFD connected to dac 7 and the tool setup screen is set up as in the attached .PNG    max rpm of the spindle should be 3490rpm @ +10.   I cannot get the output of the dac to change when I send it an S command.  I can change the numbers around (min / max) and the dac will change (VFD will respond) I can only get the dac to respond either 0 or +10 volt Nothing in between.  I assume that my scaling is the problem.  I have looked through the forum and the manual but cannot find what I need.  Will you point me in the right direction or explain what I need to do?


Regards
Steve