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mach 3 problems
« on: March 01, 2010, 10:43:11 AM »
Hi.
I have converted a proxxon mf70 to a simple 3-axis machine. At first i tried to use mach 3, but my steppers just sounded awfull... I then tried kcam, and found that whit the same settings as i applied in mach 3 it runs really nice. I am running win xp, 200steps/mm at a rate of 100mm/min. My driverboard is from cncgeeker . com. I just can't figure out why the heck mach3 can't run my steppers...
Any suggestions?

Thanks in advance!  ;)

Offline RICH

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Re: mach 3 problems
« Reply #1 on: March 01, 2010, 06:06:36 PM »
Did you configure MACH and also set/check the steps per unit, velcocity, and accel, an us in motor tuning?
RICH
Re: mach 3 problems
« Reply #2 on: March 02, 2010, 01:36:45 AM »
Yes... i have set mach up just like kcam, and also set the motor tuning to exactly the same as in kcam.. But it just doesnt work.. and they are borh set to mm's not inches.. so that shouldn't be the problem..

Offline RICH

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Re: mach 3 problems
« Reply #3 on: March 02, 2010, 07:31:58 AM »
Quick look at kcam says that the drivers get their signals via the serial port.
Mach output is via the Parallel Port.
RICH
Re: mach 3 problems
« Reply #4 on: March 02, 2010, 08:07:50 AM »
No.. I use the same port in both programs, parallel port.. The motors does turn in mach3, it just doesn't sound good, and they don't run smooth...

Offline RICH

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Re: mach 3 problems
« Reply #5 on: March 02, 2010, 08:40:06 AM »
Quote
it just doesn't sound good, and they don't run smooth

Suggest you try changing the step and pulse time to a value like 5 or even try using the Sherline 1/2 pulse mode as that gives  max pulse
of time 40us. I didn't see anything specific in the manual reagarding this, but, i only glanced through it.

Does your computer have on board graphics?

RICH
Re: mach 3 problems
« Reply #6 on: March 18, 2010, 06:02:28 AM »
Sherline ½ pulse did the trick! Thank you :) By the way.. How do i get mach3 to disable my stepper motors when they are not running? They get quite hot if when it keeps them enabled all the time..

Offline RICH

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Re: mach 3 problems
« Reply #7 on: March 18, 2010, 10:02:24 AM »
Have a look at your drive documentation and see if there is a jumper for auto current reduction.
RICH