Messages

301

General Mach Discussion / stepper drive cards.

« on: March 28, 2010, 08:37:14 AM »

Just fitted some new stepper drives on the X Y Z axis of my Denford Triac. They are the ones with lots of switches to allow you to select the steps range. Problem is I dont know how to start, I understand the Mach 3 tutorial on setting the accuracy but not sure where to start with the switches. The ballscrew pitches are 5mm and the pulley drive to them has a 2.5 to 1 ratio connecting them to the D34 motors. I'm an old engineer who is used to a hand wheel with division on it. How do I start, sorry if I appear a bit thick but I have the steppers working although very slowly on the switch settings the stepper drives came set at. Does the steps range selected affect the speed or am I barking up the wrong tree. I did a quick measure and asked the machine to move 20mm in G00 it moved 25mm very slow. Jim

302

General Mach Discussion / Re: x axis problem

« on: March 27, 2010, 01:53:28 PM »

Give that man Hood a medal, loose wire on the dirx connection on the breakout board. Cheers mate

303

General Mach Discussion / x axis problem

« on: March 27, 2010, 11:59:24 AM »

Hi I have just converted my denford triac, replacing all the electronics and trying to run it on the mach 3 software but I have a problem and need some help. I cannot get the x axis to travel in both directions. If I press plus and minus on the mach screen buttons the axis only goes one way. Have I connected up the wiring wrong, the NEMA 34 motors are 4 wires (found the matching pairs) and I have wired them into the new stepper drives which only require 2 wires. Done the same for the Y and Z which seem to be OK although they move in the opposite direction to the mach direction buttons, looking at the forum posts I can change this in the config on Mach.  Any suggestions would be appreciated.