Topics

1

General Mach Discussion / Can two different Mach3 profiles open in two different monitors?

« on: November 23, 2021, 02:00:20 PM »

Hi!

I'm planning on using one PC with dual monitor support to control both mill and lathe.

Over Windows 10 (using ESS) is it possible to make one profile of mach3 open in one monitor and another profile to open in the other monitor? Not at the same time, sure.

Thanks!

2

General Mach Discussion / How to add a second input to an E-STOP?

« on: May 30, 2020, 10:37:38 AM »

Hi!

My Gecko G-540 BOB is wired to an E-Stop Input on Mach3.

But I bought a new Brushless Motor to my lathe's spindle that in it's controller it also has an output pin as a Fault Alarm.

I'd like to also wire this "Fault" output of the Motor's controller to another input of my BOB and also trigger an E-Stop.

How do I do it, If my E-Stop input is already used by the Gecko's own E-stop?

Regards, Rodrigo

3

General Mach Discussion / Can Mach3 do CW and CCW in the spindle with just one relay and one output?

« on: March 28, 2020, 09:41:01 AM »

Hi!

I've got a micro lathe working normally in Mach3 with it's stock motor, in CW and CCW, with two relays (to invert the wirings of the motor) and two outputs in Mach3 to do M3 and M5.

I'm buying a new brushless spindle motor and controller to adapt in my lathe.

The controller has one input (DIRECTION) that when connected to it's own GND turns the spindle CW and when let it floating (or in 5V) does CCW.

And another input (ENABLE INPUT) that when connected to GND turn the spindle on, and when not, turns off

So, I just need one relay to do CW or CCW with this controller.

Is there a way on Mach3 to set both CW and CCW to only one OUTPUT (instead of the two outputs required in the Spindle Configuration Screen), and only one relay, and then when the OUTPUT is LOW, the relay would be off, the spindle would be in CW and when in HIGH, the relay would be on, and the spindle would be in CCW.

If not, how can I solve this?

Thanks!

4

General Mach Discussion / Spindle takes a long time to reach true speed in Mach3

« on: March 24, 2020, 12:25:33 AM »

Hi!

I have a cnc converted micro lathe, with an index on the spindle and relays to turn it on an switch direction.

I control the lathe’s original motor by pwm, and I have spindle feedback to mach3 by the index signal.

I have just changed the original 2:1 (from 4.000 RPM to 2.000 RPM) pulleys by a new double pulley set. One of the sets reduces the speed to  6:1, so I get max speed of aprox. 650 RPM, for higher torque when threading

The strange thing is, in this pulley set (6:1),  when I command mach3 to S300 and then M3, it takes aprox. 25 seconds to get from 0 to 300RPM stable.

If I turn off the spindle control by mach3, and control it manually by the original potentiometer, it takes less time to get to the desired speed.


When I use the original ratio pulleys (2:1) I get to any speed very quickly.

I use a BOB Gecko G540, and PWM settings of 72hz and Min PWM at 1%

My debounce interval for the single index pulse is debounce interval: 600 and index debounce is 10

I use Spindle Feedback in Sync Mode,
Closed Spindle Loop Control and Spindle Speed Averaging

Is it normal in a reduced ratio pulley for the spindle take  so long to get to this 300RPM speed? Is there something I could do to improve it?

Thanks, Rodrigo