Messages

1

General Mach Discussion / Re: After homing axis don't back off Switches

« on: December 14, 2013, 01:17:31 PM »

The Mach 3 manual says you can set the homing up so that it does not back off the switches, but I can't find another reference on how to do it. It would seem that I have some how set that preference unintentionally. Does anyone know how to do this??

Bob Keyes

2

General Mach Discussion / Re: After homing axis don't back off Switches

« on: December 14, 2013, 07:45:25 AM »

Hood,
Thanks. I'll check that out right away. But, why did it change from backing off a visible amount to nothing visible? Don't understand that?

Bob Keyes

3

General Mach Discussion / Re: After homing axis don't back off Switches

« on: December 14, 2013, 07:06:17 AM »

Yes. The LED's do turn green.
I reloaded Mach3. No help.

Bob Keyes

4

General Mach Discussion / Re: After homing axis don't back off Switches

« on: December 13, 2013, 11:01:04 PM »

Thanks for your reply. However, as oft times happens with me, I was not clear enough. Z is first and it goes to the limit, but does not back off the switch. Then Y goes to the limit and does not back off the switch. Then X does the same. When X hits the switch. The reset come on with the tripped limit. Now, I have to back off each axis by overriding the limits or turn off power and do it manually. The problem is that it doesn't back off the switches.

Any other thoughts??

Thanks again for your reply.

Bob Keyes

5

General Mach Discussion / After homing axis don't back off Switches

« on: December 13, 2013, 09:41:24 PM »

I've never had much problem with my mini mill and Mach until now!

When I home the machine each axis does not back off of the limit switch and the DRO's don't go to zero. The problem just started today. I have checked and everything seems to be OK.

3 limits wired to 3 inputs. Using each switch as home and limit.

Does anyone know how I have turned this function off??

Thank you for any help you can give.

Bob Keyes

6

General Mach Discussion / Re: Spindle Speed Control

« on: March 23, 2009, 05:13:50 PM »

Gosh, I think that might be over my head right now. I still don't know what the "increment" does on the speed control panel?? When you increase or decrease it what does it change??

7

General Mach Discussion / Re: Spindle Speed Control

« on: March 23, 2009, 09:15:20 AM »

Ray,

Thanks for your response. I checked it and it is linear from 1000 up. It is also linear from 200 to 1000. Looks like I will have to pick a range.

Thanks again.

8

General Mach Discussion / Spindle Speed Control

« on: March 22, 2009, 11:43:21 PM »

Hello All,

I am trying to get program speed control for a Chinese mill. The mill presently uses a potentiometer. I have a CNC4pc Speed control board and have it working on PWM. Here's my problem. I cannot find the right settings to give me good speed control. I can get it tuned from 500 to 2000 rpm and then from 2000-4000 is way off. If I get it tuned from 2000-4000 then the 500-2000 is way off. Also, I am not sure what function the "Increment" setting plays and I can't find anything in the manual that explains it. But, it does effect the speeds.

Can anyone help me with this? I am beginning to get frustrated after a week of "cut and try".

Thanks for your help in advance.

Bob Keyes
Kentucky