CNC router misbehaving!! Dec 10 (Sat, tomorrow) Class may be cancelled!

General
1

Run away! Run away!

The CNC router Speed controller is not responding properly!

When I press F5, the spindle comes up to the set Speed.
When I start the GCode, the spindle speeds up to 24000RPM!
The only thing I can do is Stop the GCode to stop the Speed over run.

Any prior cures for this?
I’ve restarted the hardware & Mach3 both, to no avail.

John2pt0

2

I know they were messing with the profile to get more accurate speeds. Any chance you have the wrong profile?

3

It was the default “BigCNC” profile, but I will check again.
The only new one is “TestProfile”.

John2pt0

4

I would also try using the backup profile. You will need to find it in the Mach 3 folder, rename it something, then try to use it

5

Good call Coy!

It seems “they” decided to rename the TestProfile as “BigCNC” and BigCNC as “TestProfile”.

When I run “BigCNC” the Speed function runs away.

“TestProfile” seems to behave just fine.

The class is still on!

Thanks for the thought!

John2pt0

6

Tim mentioned this problem too… he did some sort of calibration on his profile and it went away… try using his profile?

7

I have a profile stashed on my CPU just for those exact situations :slight_smile:

8

Thanks all!

John2pt0

9

Heh just read this one. Sorry for the double reply. I don’t know if it would be worth looking into what I said? No idea if that’s useful anymore :stuck_out_tongue:

10

I saw your note. Thanks for the info.

John2pt0

11

John,

Try using the profile “Test”. This was a copy of the original Large CNC file which I then manually calibrated the spindle, I am yet to have the spindle radically speed up on this profile.

I have seen the large CNC profile act up on multiple users as well as myself.

12

Thanks!

John2pt0