Hello everyone.


I´m a happy owner of the CSMIO/IP-M (V2.700) but now I´m stuck with a small problem and I would like to hear if anyone have had the same issue.

The gearbox on my RF-45 clone has a total of 6 gear settings and to be able to use the gearbox in combination with my VFD (see zip'ed attachment), I have made 6 Pulley configs.

The problem is that the VFD does not scale at all to the pulleys. I can make it work by setting higher numbers, but I just wonder what is going on? CSMIO/IP-M outputs a far higher analog voltage to the VFD than it´s supposed to do.


Here are the numbers I have put in to make the VFD scale properly:

Pulley Number 1:
Max Speed = 1250 rpm (Real speed = 300 rpm)

Pulley Number 2:
Max Speed = 2145 rpm (Real speed = 520 rpm) 

Pulley Number 3:
Max Speed = 3750 rpm (Real speed = 850 rpm)

Pulley Number 4:
Max Speed = 7850 rpm (Real speed = 1800 rpm)

Pulley Number 5:
Max Speed = 13300 rpm (Real speed = 3200 rpm)
 
Pulley Number 6:
Max Speed = 22500 rpm (Real speed = 5000 rpm)


Maybe I need to change some settings in the VFD, but I can´t figure it out. I hope that some of you guys can help me.


Thanks in advance,

Brian, Denmark

I have never used a VFD with any CS-Lab controllers so I am not sure how they handle spindle pulleys.
If you attach your xml I will take a look and see if I can figure anything out.
Hood

Hi Hood

Here is the XML. I use the Mach3 2010 screenset.


It can't really have anything to with the VFD, it just corresponds to the 0-10v signal given by Mach3 / CSMIO/IP-M.


NB: I have just uploaded the newest firmware V2.703, no change.


Brian

On Config menu the Ports and Pins then Spindle setup you have a value of 16380 for Max ADC count, try 4095 as per the IP-M manual.

On Config menu, Spindle Pulleys you will need top enter a ratio in each pulley that you will be using. The ratio will be equal to the real world ratio of your pulleys/gears.
Hood

Thank you for the reply.


I found the magic number of 4095 in the manual, I just swore that I read it all... 

Setting different ratios has no effect whatsoever, but it works as expected now, which is cool.


Thanks


Brian

The setting of the ratio is used when you have an index pulse for displaying the rpm and the Index is on the motor or input shaft. It is so Mach knows what to divide the Index pulse rate by to show true RPM of the spindle.
I see you do not have an Index set up so as you have found it will not make a difference.
Hood

Nice to know with the index pulse :-)


I realize that I have to play a bit with the max ADC Count to make it just right. Can you please explain to me what the ADC is all about?


Brian

I would imagine you should just have the ADC Count at the 4095  as that is 12bit resolution (4096 actually)  and I presume that is what their analogue output is.
But for a better answer you are probably best contacting CS-Lab and seeing what they say.