Fusion,
- different widths from 1/2" up to 1-1/2" with no real improvement
The turn manual provides for calculating the slotwidth. The slot width can be wider than necessary.
If too narrow the RPM may not show. Since you changed over to a Hall effect mute point on the
width of the slot. Just manualy turn the spindle by hand and you should see the index led turn on and off
in diagnostics. I cover testing of the index in Threading on the Lathe writeup.
- I have tried Index Debounce settings from 0-1000
Index debounce is simply how many times Mach must see the index before it accepts the input.
I personaly use a value of 100, others can get away with 10. If a high index value is used you may
have a long waite time before the index signal is accepted and the threading begins ( changes to G95).
- motion to 50 IPM with 12 acceleration
I also use the Simple Threading Wizard . You should always click the "calc number of passes"
and it will inform you if the accel / feedrate is not adequate based on you motor tuning for the
inputed Spindle rpm.
- I also tried version 066
Use version 062 and don't use 066 as it is problematic.
- It seems to be a noise issue
VFD's can cause noise problems. Not sure noise is your problem.....
- You have backlash enabled and thus there is motion which takes place to implement the backlash.
Suggest you turn backlash off and see if the strange motion goes away. As far a using backlash relative to
to threading................GET RID / minimize BACKLASH if you want accurate threading. PERIOD!
- In a effort to simplify the troubleshooting, I disconnected the C3 index board and the C6 spindle
control. So the only active component is the C10 breakout board. The spindle was turned on at the
VFD and held a rock steady 400 rpm. No stepper drives or power supply was active either.
Even with it as bare bones as this, Mach was still making strange moves.
The C10 BOB is new. Could it be bad? It seems to function just fine with the expecption of threading.
HMM........ the signal for RPM to Mach for RPM readout is coming from the break out board with the
VFD as the source of the signal. There can only be one signal for rpm readout when threading.
I thought that you changed from using the C3 index board to a Hall affect? So the hall affect should be
used as the single source and you also click the spindle button on to get the RPM readout.
Manualy turn on and manualy set rpm of the VFD.
You don't want two signals fighting each other for the basis of the RPM used in threading!
Just some thoughts,
RICH