Topics

71

General Mach Discussion / Power supply in parallel

« on: June 29, 2008, 09:55:37 AM »

Hi, My power supply for my router table is a switching power supply at 24v 6.5A.  Look like it is not powerful enough for this purpose. I have two, can I connect both in parallel to increase current for the motors without damaging my board or power supply themself. Thanks for any advices, Jeff

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Forum suggestions and report forum problems. / Loosing steps, PROBLEM SOLVED !!!!!!!!!!!!!!!!!

« on: June 26, 2008, 07:09:12 AM »

Hi, just would like to share with others members about what I found to be working great for me and my many lost steps.
Fist of all, sorry if I make some mistakes when typing, English is not my primary language.

Second, I'm a Solidworks user for cad program and SolidCam for my cam program. When using HMS (high speed machining), this generate a lot of lines of G code, sometime, more than 20 000 lines.

At the end of the machining process, very often, I ended up with 1/8 of an inch of error on each axis, tried everything , upgraded to Mach3 3.04, no screen saver, no toolpath, dedicated computer for mach3 only, no backlash, etc.

My steppers motors run great at 70ipm.  I made some test, unchecked the auto zero on homing menu and made many homing and each time, there was a cumulative error of about 0.0005.

On the motor tuning menu, the step pulse and dir pulse was at 5us and did not knew it could be higher than that so tried to set both at 15us, that worked great, motor run smoother, ran the same 21 000 lines program again without loosing a single step. Homing was done at 0.000 on each axis.

Hope this could help some that have the same problem that I had.

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General Mach Discussion / X Axis won't stop when pushing external OEM button

« on: June 10, 2008, 04:17:05 AM »

Hi, this is my first post so will try to be as clear as possible

I'm in the middle of my project, building my CNC router table using Mach3. I wanted to try some OEM trigger buttons to test a futur control panel.

When I push and release the external button, X axis begin to move in the right direction but won't stop until I hit ESC on keyboard or Emergency button.

Checked voltage on pin 2, port 2, goes to 5v when pushing button and return to ground when releasing it.

Thanks for any help, will be very appreciated. Jeff