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x and y
« on: June 13, 2012, 08:06:46 AM »
Hi all first let me say I am finally testing my table size is 96 inches long in the X and 48 inches in the Y, . The problem I am having it is reading the X correctly but the when I zero the Y  and move it it reads  76 inches this I can't figure out. And the Mach 3 screen is huge an I can't get it aligned either. :-\

Offline Hood

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Re: x and y
« Reply #1 on: June 13, 2012, 01:07:49 PM »
Sounds like you have the steps per unit set wrong.
Hood
Re: x and y
« Reply #2 on: June 13, 2012, 01:12:04 PM »
this what i thought of last night i am going to check it because the X is rack and pinion and Y is ball screw but both the same servo drives.
Re: x and y
« Reply #3 on: June 15, 2012, 08:09:38 AM »
Checked tho the on
Y way to tune the servo is to push it to about 6000 then I got a fault that a axis was to high for the kernel speed the drive computer is a 3 ghz computer by dell for a short time I got the axis to read correctly on a  10 inch span 10 inches of movemen now not sure what to do also found my z was out as well no the only one looking right is  X a
What's funny all 3 servos are the same and originally set the same.

Offline Hood

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Re: x and y
« Reply #4 on: June 15, 2012, 02:02:30 PM »
If you have different means of connecting the motor to the axis then it will be likely that your steps per unit will be different for each axis.
You need to work it out or second best is use the Set Steps Per Unit button on the Settings page in Mach.
Hood
Re: x and y
« Reply #5 on: June 15, 2012, 06:24:01 PM »
I will try that tomarrow didn't see that button I think the maker of the servos set them all to 4000 because when I whent into the tuning and adjusted  it to 6000 steps it had the travel right but thru out a kernel speed was to fast fo an axis
Re: x and y
« Reply #6 on: June 18, 2012, 05:06:18 PM »
Soft max I change to this and solved my scree set up I think but still figuring out Y and Z motor settings .  What actually in soft max and minim do you put?

Offline Hood

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Re: x and y
« Reply #7 on: June 19, 2012, 02:51:41 AM »
Soft Max and Min are software limits, you need to home the machine for them to be any use. If you do not have home switches you will need to manually jog to the fully negative on X and Y and fully positive on Z and then press Ref All button to tell Mach you are at Home Position.
Your Soft Min and Max forX and Y will be
Min = 0
Max = the axis travel distance

For Z it is the opposite,
Max will be 0
Min will be travel but as a negative number.
Hood
Re: x and y
« Reply #8 on: June 19, 2012, 07:35:00 AM »
I will try this have wires for homes but need to install thanks up date to fallow