Messages

1811

General Mach Discussion / Re: New CV features

« on: December 14, 2006, 08:25:20 PM »

Hi, Scott

Thanks for the photos nice work.

As far as the problems go, I didn't mention.

Have you try-ed setting the LookAhead value down in Config. General Logic.

Setting the Step & Dir Pulse up some in Motor Tuning, some stepper cards need this.

Change the Dir & Step Low Active  to opposite state in Ports & Pins, Motor Outputs, some stepper cards need this also.

You can Reverse Axis Direction in Home & Limits page (Reverse box), Its really the proper place to do this, well in My opinion.

May-be one of these will Help, Chip



 

1812

General Mach Discussion / Re: Help! Please! this Chaos has to stop!

« on: December 12, 2006, 11:49:17 PM »

Hi, Greg

USB has very limited current though, probably your problem I Hope. 

A 5 Volt 500 Ma, Wall plug-in type should work fine, install a 5 volt Regulator ( RadioShack has them looks like a Transistor 3 pin + - 5 volt).

Should be pretty straight forward install.

Hope this is enough Info if you need more Holler.

Hope this is It Hu, Chip 

1813

General Mach Discussion / Re: Axis position feedback

« on: December 12, 2006, 08:08:54 PM »

Hi, Brian

Your system above is Stepper motor there is no feedback.

You can setup Home switches and reff. to a start Position to calibrate when needed.

Hope this Helps, Chip

1814

General Mach Discussion / Re: max feed rate?

« on: December 12, 2006, 07:34:38 PM »

Hi, guynamedbathgate

Have you increased / Adjusted the Velocity and Acceleration settings under, Config., Motor Tuning, with 20000 steps you probably need to.

Hope this Helps, Chip

1815

General Mach Discussion / Re: Rotary Axis Problems

« on: December 12, 2006, 07:19:56 PM »

Hi, Dan

I had the same problem, unless things have been changed you need to set your F speed to  a value greater than 100.

The A axis is now controlling your F Speed, On my rotary table the Vel is 2500 acl is 500, I set it to F 1500.

Then you should see the speed up, and adjust it as needed for proper cut speed.

It has to do with the steps being set to Deg  and software not taking it into account.

I've posted  or sent an Email to Art and  Brian on this before.

Hope this Helps, Chip

1816

General Mach Discussion / Re: New CV features

« on: December 11, 2006, 12:24:08 AM »

Hi, Scott

I looked at your sample.Tap File, It dosn't have a F value set for your G01, G02, G03, so there running at 100 % speed.

Do your other files have F speeds in them. ?

Could you post an actual file your having problems with and describe your machine in a little more detail, stepper-servo, size, photos.?

Thanks, Chip

1817

General Mach Discussion / Re: New CV features

« on: December 10, 2006, 11:30:54 PM »

Hi, Scott

Would you post your Steps Per, Vel. and Acceleration values.

I have read some of the posts hear and have had some simillar issues early on.

Your values I read were vel 780 acc. 13.

Try setting your Vel to Max speed just where you start to miss steps then back it off some.

Then set your acc. to as fast as you can from a dead stop to missing steps then back this off some also.

You can set the speed to lower than your Acceleration start speed with your F settings, or over-ride.

I had this problem with a Water-jet cutter being Jerky also this smoothed it out, dual overhead gantry.

Give this a try let us now.

Thanks, Chip

1818

General Mach Discussion / Re: Help! Please! this Chaos has to stop!

« on: December 09, 2006, 10:57:34 AM »

Hi, Greg

You stated the Z axis screw i sent supported at one end, is it whipping around at times, this would cause extra drag.

Its probably just to high Vel., Accl. though.

Just a Thought, Chip

1819

General Mach Discussion / Re: Help! Please! this Chaos has to stop!

« on: December 08, 2006, 10:00:07 PM »

Hi, Greg

Would you Post the G-code that goes with the video, ether your velocity, acceleration are set to high or some kind of binding is occurring.

Thanks, Chip

1820

General Mach Discussion / Re: Cold Snap & The Geckos (not a new punk band)

« on: December 07, 2006, 03:05:32 PM »

Hi, Glenn

The Watts docent matter, its the 33K(33,000 Ohm) value thats important, It just sets the current limit in the Gecko to match your stepper max current.

Sounds like your power supply i sent up to the task at 4.5 amps.

If all 3 axis are using 33k resistors on your Geckos then your at about 7.5 amps draw on your power supply, thats way more than your power supply can handle.

Time to get a Bigger Power Supply, More Amps at least or reduce the Current draw on your steppers, which will reduce your stepper power.

Your Geckos are rated at 24 to 80 volts your at the bottom of the voltage level.

Steppers need around 10 times there voltage rating to get top speed and torque.

You should get a 70 volt or so supply rated at least 8 amps for your current setup.

Thanks, Chip