I am new to CNC and Mach3...
I have converted an old RF30 and can't get it stable.
I am not sure if it is in Mach3 or the motors?
My system seems OK at full speed but gets lost at lower speeds.
I read another post with a similar issue but did not see how it was resolved.
So here goes:
If I jog the Y axis 1.00 at %100 ~15 IPM the system seems to be with in .001.
If jog the Y axis 1.00 at %40 ~6 IPM the system is way off, and very inconsistent.
I am not addressing backlash here because it happens moving the same direction, repeatedly.
I did some testing with a dial indicator in the vice jogging at %100 15 IPM.
- Set zero and jog away 1.00 then back within ~ .0005 from where I started.
- Set zero and jog away 3.00 then back within ~ .001 from where I started.
- Set zero and jog .1 ~ .001 from where I started 5 times in a row.
Now turn the jog speed down:
- Jogged .1 three times same direction 1st step off ~.001 2nd step ~.005 3rd step ~.007.
Not sure what going on?
I am pretty sure the motor tuning step counts are close because at high speed it repeats 5 times in a row, but at slow speeds it won't repeat.
Info about my system:
- RF30 Drill Mill.
- Ethernet Smooth Stepper. (added afterwards thinking it would solve the issue...) nope, but it looks cool
- Parallel break out board.
- Wantai DQ542MA Drivers, set at 1000 Pulse/Rev. (Were set at 1600, same issues but worse)
- Wantai 57bygh115-003 Motors. 425 in/oz
- 36 VDC 10A supply.
- Mach3 (Licensed)
Steps taken so far:
- Increases the wire size from power supply to drivers. (In case there were to small)
- Disassembled the Mill X and Y completely, cleaned and reassembled. ( It moves smooth, no binding, with about .008 BL)
- Put a fluke meter on the 36 volts and ran motors. (34VDC +_ .3 all the time)
- Tried setting motor tuning 7-15 IPM and tried acceleration (.5 - 10)
Not sure what to try next.