Apples

12-23-2005, 08:19 AM

I have this system on a plasma table.

Cut area 3m x 2m

Geckodrive G202's

48Volt 13amp power supply

Running two 1200oz-in steppers on the x axis.

And one 270oz-in stepper for the y axis.

Using CorelDRAW, AutoCAD, SheetCAM and

Mach3.

The motors are all tuned up right. They have the correct steps per unit etc.

--------------------------------------------

----------

The problem:

If the velocity is set to 10,000mm/min in the 'motor tuning' page for both the x

and y

axis. And I go and jog the gantry in the y axis it will move along at the correct

speed of 10,000mm/min. This will be shown in theDRO.

But, if I jog with the x axis the motors will move at 14,000mm/min instead of the

10,000mm/min that was setup in the 'motor tuning' page. This problem will also

happen if I run a g-code through Mach3. Say for example I run a square shape.

The feed speed will be set on 5000mm/min. The y axis will feed correctly at the

set 5000mm/min. The x axis will move faster than the set speed that it is meant

to. It will move at 7000mm/min instead of the 5000mm/min required.

I have checked that the speeds that the DRO are reading are correct.

How I done this was, Made the machine run for a distance of 1meter and counted how

long it would take to travel the 1meter.

From those results it showed that the DRO are giving me correct readings.

I have alos cut out a part in 10mm steel with the plasma. You can see how the

edges are smooth and perfect, then the gantry

makes a right turn and the x axis starts driving. The x axis moves faster than

the y axis and therefore the cut edge is very poor.

I am only a newbie to this so I have tried everything that I can think of.

I wiped all traces of Mach 3 then reloaded Mach3 again. Making sure to re-boot

after the instalation.

So I am stumped as to what is going on.

Can anyone help?

P.s on the gecko's I adjusted a 'trimpot' which is the 'low speed vibration'

trimpot screw. Maybe this has effected the motors etc...

I adjusted the screw at the back of the Gecko untill the vibration in my machine

went away.

Peter

Australia

Cut area 3m x 2m

Geckodrive G202's

48Volt 13amp power supply

Running two 1200oz-in steppers on the x axis.

And one 270oz-in stepper for the y axis.

Using CorelDRAW, AutoCAD, SheetCAM and

Mach3.

The motors are all tuned up right. They have the correct steps per unit etc.

--------------------------------------------

----------

The problem:

If the velocity is set to 10,000mm/min in the 'motor tuning' page for both the x

and y

axis. And I go and jog the gantry in the y axis it will move along at the correct

speed of 10,000mm/min. This will be shown in theDRO.

But, if I jog with the x axis the motors will move at 14,000mm/min instead of the

10,000mm/min that was setup in the 'motor tuning' page. This problem will also

happen if I run a g-code through Mach3. Say for example I run a square shape.

The feed speed will be set on 5000mm/min. The y axis will feed correctly at the

set 5000mm/min. The x axis will move faster than the set speed that it is meant

to. It will move at 7000mm/min instead of the 5000mm/min required.

I have checked that the speeds that the DRO are reading are correct.

How I done this was, Made the machine run for a distance of 1meter and counted how

long it would take to travel the 1meter.

From those results it showed that the DRO are giving me correct readings.

I have alos cut out a part in 10mm steel with the plasma. You can see how the

edges are smooth and perfect, then the gantry

makes a right turn and the x axis starts driving. The x axis moves faster than

the y axis and therefore the cut edge is very poor.

I am only a newbie to this so I have tried everything that I can think of.

I wiped all traces of Mach 3 then reloaded Mach3 again. Making sure to re-boot

after the instalation.

So I am stumped as to what is going on.

Can anyone help?

P.s on the gecko's I adjusted a 'trimpot' which is the 'low speed vibration'

trimpot screw. Maybe this has effected the motors etc...

I adjusted the screw at the back of the Gecko untill the vibration in my machine

went away.

Peter

Australia