Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: birillo1959 on April 29, 2022, 06:16:24 AM

Title: spindle speed problem
Post by: birillo1959 on April 29, 2022, 06:16:24 AM

good morning
I have a problem with the spindle speed that I cannot solve, without loading the gcode I turn on vfd then the spindle I press the "+" key and it increases the speed a little and up to here it is ok if I load the gcode and the speed is "M3 S10000" I start working and press the "+" key the speed doubles, I would like (if possible) that it increases slightly there is a way to set
the increase in speed?
I thank those who can help me, I hope I have explained.

Title: Re: spindle speed problem
Post by: JohnHaine on April 29, 2022, 08:16:02 AM

Mach 3 or Mach 4?

Title: Re: spindle speed problem
Post by: birillo1959 on April 29, 2022, 09:37:46 AM

mach3  ver.3.043.062

Title: Re: spindle speed problem
Post by: JohnHaine on April 29, 2022, 05:25:38 PM

OK, now we know more about the software, what hardware configuration do you have?  How is the VFD speed controlled from your computer?

Title: Re: spindle speed problem
Post by: birillo1959 on April 30, 2022, 06:34:31 AM

thanks for the answer, I have a 4 axis tb6600 vfd card connected to the Modbus RS485 com port, to increase and decrease the speed I use the "+/-" keys, I state that first everything worked regularly then (I don't know why) it arose this problem. I enclose xlm

Title: Re: spindle speed problem
Post by: birillo1959 on April 30, 2022, 06:36:50 AM

screen

Title: Re: spindle speed problem
Post by: JohnHaine on April 30, 2022, 07:15:52 AM

So essentially the speed is controlled by a modbus connection between computer and VFD, right?  And when you say +/- keys, I assume you mean the spindle speed override on the mach3 screen?

Title: Re: spindle speed problem
Post by: birillo1959 on April 30, 2022, 08:28:16 AM

just the speed is controlled by a modbus connection between computer and VFD, the +/- keys' override the spindle speed on the exact mach3 screen

Title: Re: spindle speed problem
Post by: JohnHaine on April 30, 2022, 08:51:04 AM

Try changing the %S DRO to say 10 rather than 100.

Title: Re: spindle speed problem
Post by: birillo1959 on April 30, 2022, 01:43:34 PM

I tried to set 10 in the dro but it always returns to 100 I don't know if there is to set it somewhere else

Title: Re: spindle speed problem
Post by: JohnHaine on April 30, 2022, 04:58:34 PM

Did you type it in then press return?

Title: Re: spindle speed problem
Post by: birillo1959 on May 01, 2022, 02:50:32 AM

ok thanks for your patience
I type 10 in the dro as I press enter it returns to 100

Title: Re: spindle speed problem
Post by: JohnHaine on May 01, 2022, 03:58:46 AM

In my experience the enter key doesn't work with the M3 DROs, press return instead?

Title: Re: spindle speed problem
Post by: birillo1959 on May 07, 2022, 02:44:54 AM

good morning
I solved the problem, anyway thanks to John Haine for your patience !!!! ;) ;)

Title: Re: spindle speed problem
Post by: JohnHaine on May 07, 2022, 05:39:47 PM

Well done...what was the solution?

Title: Re: spindle speed problem
Post by: birillo1959 on May 08, 2022, 01:50:53 AM

ok John Haine in mach3 / general config under "spindle OV increment" I put 10 (there was 100) and everything is back to normal, I don't know how and why it changed, on the other hand I solved it !! ;)

Title: Re: spindle speed problem
Post by: JohnHaine on May 08, 2022, 04:12:35 AM

Excellent!