Topics

1

General Mach Discussion / Gecko G540, the A axis only moves into single direction

« on: October 20, 2014, 02:03:32 PM »

The A axis only moves into single direction.
I've attached my settings bellow, when i connect the same motor to any other axis X, Y ,Z it does move into both dirrections as it should.
I've never used this axes before on this controller so i'm not sure if it ever worked.
I have 2 keys set to move the A axis, "z" keyboard key and "x" keyboard key, and when i press any of them the voltage on pins 6-7, 8-9 does change and of course the're set to move the axis into different directions.
I can't figure out what's wrong, is it the controller or i have some wrong settings
Please help, thanks in advance

2

General Mach Discussion / How to correctly ground very noisy spinddle

« on: June 28, 2014, 10:53:49 AM »

I have a very cheap 90V, 200W spindle, in order to power it i'm using multiple laptop adapters connected in series (of course none is grounded to AC).
The DC output is 96V. I've changed the cable today on the DC side, to a cable that has the ground wire. If the spindle is turned on, when i measure the DC voltage between ground wire and minus(-) wire or ground wire and plus(+) wire i'm getting crazy high voltage pulses 200-600V.
So my question is, am i getting all that noise due to my inadequate power source?
Should i connect the DC minus(-) to the ground wire?  (The ground wire from spindle is already connected to the CNC and all other ground wires from stepper motors )
Should i connect the DC (-) from spindle to the minus(-) DC2 output that powers my gecko board and all that to ground CNC?

The system seem to work well the way it is right now,  but i'm worrying  about the expensive gecko board.

Before changing all the cables to cables with ground wires, even with debounce interval set to 2000, i used to get some unexpected "Emergency mode activation"

thanks