Messages

1011

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 04:29:58 PM »

Hi, Spiwrx

With 45 volts your not gong to get top speed, The faster a stepper goes, More volt's are needed to keep the current/speed up.

When the volt's top out the stepper will start to lose there Torque/slip, So basically your losing about 30-40 % of your top speed.

What are your current Velocity and Acceleration, Sounds like you need to reduce the Velocity some more.

Yes some laptops don't have Ground's, But there even more isolated, Don't think this is the problem though.

If you have a variac and your gecko power supply is Transformer type.

You could see the difference by boosting the power supply primary volts up some "temporarily" and see the difference.

Thanks,Chip

1012

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 02:29:05 PM »

Hi, Bill

It's an all volunteer group around hear, I've started to several time's, Have a list I work from (Note Pad File).

Just haven't got around to it, No Good Reason.

Thanks, Chip, 

1013

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 02:12:27 PM »

Hi, Spiwrx

Your BoB isolates the machine from the computer to protect the computer port's from machine generated spikes.

Both are/should be grounded to a Earth Gnd. at your power panel through,  Neutral and Gnd, Pin's, On Both.

Thanks, Chip

1014

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 01:01:30 PM »

Hi, Spiwrx

I'd check the laptop volt's any way, low volts to the opto diodes in the BoB  can cause problems also.

in Config, Motor Tuning, Set the Step/Dir Pulse's to 5, See if that helps,(It gives the OPTO's a little more time to see the Pulses)

On the Gecko's, It depends on the size of your steppers, There are some jumpers inside the box.

What's your power supply Voltage and amp's rating, It should be close to 75 volts minimum for top speed.

Your steppers should be hot to the touch after being on for awhile if your current resistor is set properly for your stepper's.

Thanks, Chip

1015

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 12:27:11 PM »

Hi, BluePinnacle

Velocity and acceleration is a balancing act, Velocity to high or acceleration to steep/quick/aggressive can do it.

Using G00 moves or Mach's feed settings set higher than your velocity setting, Will help you find the balancing point.

Also do some X, Y diagonal moves when testing, You nay need to decrease  Velocity and acceleration a little more.

Hope this Helps, Chip

1016

General Mach Discussion / Re: phantom limit switch

« on: March 11, 2008, 11:58:34 AM »

Hi, Spiwrx

Do a "DriverTest" and see if your computer has vertical random spikes, If it dose there is a Optimize document bottom of the download page that may help.

Driver test is located in C:\Mach3 folder.

Check your laptop printer port output for 0 and 5 volts, Test one of the dir pins, Moving with arrow key one dir, should be 0 volts and the other dir should be 5 volts.

Some laptops only have 3.5 volt outputs that will not work very well at all. What's the CPU speed ?

As far as the De bounce setting, Mach's Default is 0 which is often unrealistic.

Just trying to get to a starting point hear, Guess I should have sed Turn them Off, First Post go figure, Just a starting point hear.

Sure it could be Allot of things, Bad Gng, Gnd loop, Wire Induction issues, Lose connection, Bad switch or contacts. 

On the Diagnostics Page do you see any flickering of the limit led's at all now ?

Let me now what you find.

Thanks, Chip

1017

General Mach Discussion / Re: Steppers DEAD!

« on: March 11, 2008, 12:21:49 AM »

Hi, H-Wheeler

Config, Ports & Pins, Outputs  to "Enable1" see pic 1

After starting Mach3 "Reset" should turn on the drives.

Did you try changing this, If it doesn't change the Active Low State to "X".

Pulse Frequency may not change much at all, is the Time in Int changing see pic.

Post your XML file.

To: Post your XML

If you have a Standard Install of Mach you'll find the xml's in C:\Mach3 folder.

Find the Mach3Mill.xml, Make a copy of it and Re-Name the copy to a unique name,  your nameMach3Mill.xml should work.

Use the "REPLY" Button then Attachment Options, "Browse" to C:\Mach3 and find the file, Double click on it and Post.

Thanks, Chip
 

1018

General Mach Discussion / Re: Steppers DEAD!

« on: March 10, 2008, 10:22:14 PM »

Hi, Rich

No Egg throwing hear, Just People helping People.

Maybe will get an update soon.

Thanks, Chip

1019

General Mach Discussion / Re: Steppers DEAD!

« on: March 10, 2008, 06:49:00 PM »

Hi, H-Wheeler

Just another opinion hear.

Looking at your stepper drive picture, I would not change any Jumpers, All the
Connections you need are in the Printer cable now.

Looks like to enable your drives you need to set External-4 pin 17.
 

Config, Ports & Pins, Outputs  to "Enable1" see pic 1

After starting Mach3 "Reset" should turn on the drives.
If it doesn't change the Active Low State to "X".

Config, Ports & Pins, Motor Outputs as in Pic 2

Dose your Mill have a forth axis A, "R axis" as in the Picture ?

If not then don't put in the A axis pin numbers


I wouldn't set the "Home" switches up till you get it going, Motor Tuned.

Config, Ports & Pins, pic 3


I think the "Active Lows" are set correct, If not change them to the other state "X"

Then on to Motor Tuning,

Let us now.

Hope this Helps, Chip

1020

LazyCam (Beta) / Re: No Entities Found

« on: March 09, 2008, 02:11:30 PM »

Hi, Scot

Hears one thats better, Smaller line segments.

Chip