Messages

1

General Mach Discussion / Re: Slave not synchronized

« on: August 12, 2011, 01:00:14 PM »

Hi every one

Sorry it took som time for me to reply! Hood nailed it Turning on Sherline mode seem to have solved the problem, at least I can't see that the steppers are missing steps anymore A lot of thanks to you all, I'm a happy man, -it really means a lot to get help!!

Jens

2

General Mach Discussion / Re: Slave not synchronized

« on: August 09, 2011, 04:21:40 AM »

Hi Tweakie

Thanks for your reply! I have now disconneted the grounds form the stepper housings, but unfortunately I'm still loosing steps. I forgot to try setting the Input Signal Debouncing, but shouldl it make a difference, when i haven't connected any limit switchs yet? -I'll try setting the debouncing today...

I discovered a few other things that mayby can help solve the problem. Until now I haven't hat a grounded cabel for my computers power supply. Yesterday I changed it to a grounded one, and I found, that if I put it into the same power outlet as the controller, the steppers gets a lot more noisy.

If I use different power outlets for the controller and the computer, the steppers  noise level stays normal. -by the way, is it normal that the steppers makes at buzzing sound, when they are not moving?

Another thing I found was, that if i use the Mach3 auto axis calibration function "set steps per unit", the stepper will only move, if I've just moved it in the same direction, as the calibration function is going to move the stepper.  If I just moved the stepper in the opposite direction, the callibration function will not move the stepper. Instead the stepper stalls, like when you set the velosity way to high.

Has anyone got an idea what could be the problem?

Thanks in forhand
Jens

3

General Mach Discussion / Slave not synchronized

« on: July 24, 2011, 04:09:24 PM »

Hello everyone

I have build a gantry style router, and i'm using the X- and A-stepper to drive the gantry. The X-stepper is master and the A is slave. Some of the time the steppers move perfectly in sync, but then suddenly one of the steppers loses steps, and drives the gantry out of square. I'm using shielded cabels, and have connected the sheild-wire to the stepper housing at one end, and to the controlbox at the other end.

In "motor tuning" i have tried to set the "step pulse" to 4, which seems to help a little, but it is not good. I will be very greatful to anyone with some advice, on how i get the master and slave to drive in sync.

Regards
Jens from Denmark