Messages

61

General Mach Discussion / Need troubleshooting help...servo runway problem

« on: February 24, 2008, 04:12:10 PM »

Hi

I started mach3 and the machine. As soon as the power is applied to the
system. All three axes took off on their own. I just did a mach3 driver
test and it seems to be fine. I`ve been using the machine with no
problems for a long time. I have not made any recent changes to the
Mach3 config file. I have the sound logic breakout board and the sound
logic encoder interface board.
I tested the encoder board and its recieving 115 volts and its
providing 5 volts at its marked terminals.
I want to test the parellel ports but an uncertain how to go about it.
Its diffcult to test the geckos because of the runaway problem. I`m
totally lost big time.

Barry

62

General Mach Discussion / Re: A million dollars to the person that can help me.

« on: February 21, 2008, 07:15:55 PM »

Hi Hood

That`s a very intelligent answer. This problem made me so mad I can`t think straight.
I have both testing devices. Problems are the biggest pitfall with DIY CNC . There
are limited troubleshoot tips from some of the retailers of these products. I do have a difficult time
troubleshooting circuits that I have no idea how they work. Am I wrong here.
Some of the people that sell their boards have great troubleshooting help. And other
retailer have no troubleshooting information. It seems everyone`s lives would be easier if
thses products have more info provided at the site from which these products are sold.

Thanks alot

63

General Mach Discussion / A million dollars to the person that can help me.

« on: February 21, 2008, 06:37:08 PM »

Hi

I started mach3 and the machine. As soon as the power was on to the system. All axes took off on their own. I just did
a mach3 driver test and it seems to be fine. How to I fix this problem. I`ve been using the machine with no problems for a long time
without problems.I`m using machh3 version 2.6. I`m also using the sound logic encdoer interface for servos on my machine. Also, no
changes have been to the xml config files or any modifications to the wiring of the system. It would be great if I could troubleshoot
the control panel with system powered up. That`s a bit difficult to do when the power is applied and all axes want to crash into the
machine frame. Sometimes this DIY stuff is a big pain in the ass.

Barry

64

General Mach Discussion / inhibit Z

« on: September 05, 2007, 07:54:16 AM »

Hi all

What does this Mach3 feature do : inhibit Z

Barry

65

General Mach Discussion / Z axis direction

« on: September 04, 2007, 09:28:08 AM »

Hi all

I was having trouble with the z homing into the table. I reversed the motor and
that was sucessful. Now when I use the MPG Mode my z- and z+ are reversed.
I forgot where to change that setting. X- is down toward the table....is that correct.
Thanks Barry

66

General Mach Discussion / Re: Trying to get 2nd parallel port card working, need help!

« on: June 15, 2007, 05:41:05 PM »

Hi

I think you need to access the machine bios and disable Plug and Play auto-configuation.
Then install the parallel port and then add the driver software.

67

General Mach Discussion / G-code not running

« on: June 15, 2007, 03:31:43 PM »

Hi

I just upgraded to a new servo on my Z axis. I can
jog all axes just fine. When I try to run G-code
the code will not run. I`ve tried 3 or 4 project
codes and the same problem occurs.
On the feed rate dialog there are Units/min it has
some strange text loaded -1.#J Trying to overwrite
the text by typing a new feed rate does not stay. The
strange text reappears.
Note: I`ve had problems with servo faults on the Z.
Today I changed the motor output from active high to
active low on the z axis only and it jogged fine ...not one fault.
The other axes are set to active high and they jog
with no faults. Is this a normal config. If I change
the Y and X to active low they will fault.

Barry

68

General Mach Discussion / Servo Questions

« on: June 05, 2007, 09:29:55 AM »

Hi All

I just installed a new 800 ozin servo on my Y axis. Its running great.
I did a test to compare its holding torque. I grabbed the timing belt
and to my surprise I could not move the belt. It has very strong
torque . The reason I mention this is the same test on my z axis shows
it takes very little pressure to make the servo break free. It seems
to have almost no detent torque.
This was a 360 ozin servo I got from Jeff Davies, its on a 24 volt
transformer. This axis had been a lot of trouble with servo faults.
I`m not certain if the motor is too small or its not tuned correctly.
I am considering getting another 800 servo and changing out the 360
ozin servo.
My other concern is all my servos will be on one 15 amp 54 volt power
supply.I would have (2) 800 ozin and (1)1100 ozin servo on the
supply. These motors were purchased from Dan Mauch.


Barry

69

General Mach Discussion / Servo faults are showing up again

« on: April 20, 2007, 07:25:45 PM »

Hi
 
I thought I had my problems with servo faults solved. Art had mentioned to set Mach3 to sherline mode. That seemed to end the errors on the X axis servo. Just to play it safe I ordered shielded and twisted paired cables and line drivers from US Digital. Now that I have the cables and driver installed for the x and z axis the x is faulting again. It always seems to be the direct drive servo on the x and never the z. I have the Rogers machine encoder interface card so it will stop the machine if the following error gets too large. A few weeks ago I was cutting a 3D part at 100 ipm with a following error set to .005. I didn`t have any problems with faults. Now I have the following error set to 1 inch and the axis faults after it moved .5
I`m lost.
 

Barry

70

General Mach Discussion / Re: servo following error problems

« on: April 06, 2007, 06:40:51 PM »

Hi

I converted two of my three steppers to servos. I`d recommend the Roger`s Machine interface card.
The support is first-class and the addition of the board to a DIY CnC is great for fine-tuning your
system and also for saving a part from the trash can.