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General Mach Discussion / Motor stalling issue. (best I can describe)
« on: December 20, 2013, 09:48:27 AM »
All,
I have a new setup. (I have previous machines that work under Mach). This is a router table with 2 drives driving the X axis.(the A one is slaved)
Controller is a PDMX122, Geko 203V and Vexta Geared Motors.(PK296 series)
The PC is a Pentium 3Ghz stripped down to bare bones configuration.
and I am registered Mach3 user too
All is functional. and typically the machine behaves properly.
Sometimes (pretty frequently) the motors could be any of the axis. X Y or Z (X has a slave axis)
the motors stall. The best way I can describe it is . ITs as if the velocity is set to high. (but its not)
I can tune the motors to say 300ipm range and they operate smoothly.
The problem seems to only occur on first start of any direction on any axis. One their running I can stop and start. many times their after.
Another way of getting them to stall reliably. is to perform an "Axis Calibration" this will almost always cause the motors to stall.
Example.
Run first test... Motors stall for about a second then proceed as normal.
Run second test. Same results.
Run same test but jog motors any direction. just before hand... no stalling.
Using the above example. I have even adjusted the motor tuning down from say 250 to as low as 20. all with the same results.
My apologies If I have not explained my symptoms correctly.
One last injection. I have ran a sample g code file with as much as 12K lines of code. and ran with out a hiccup.
BUT... the actual first movement stalled. my solution. re home. Re jog... then re run the g code file.
-S
I have a new setup. (I have previous machines that work under Mach). This is a router table with 2 drives driving the X axis.(the A one is slaved)
Controller is a PDMX122, Geko 203V and Vexta Geared Motors.(PK296 series)
The PC is a Pentium 3Ghz stripped down to bare bones configuration.
and I am registered Mach3 user too
All is functional. and typically the machine behaves properly.
Sometimes (pretty frequently) the motors could be any of the axis. X Y or Z (X has a slave axis)
the motors stall. The best way I can describe it is . ITs as if the velocity is set to high. (but its not)
I can tune the motors to say 300ipm range and they operate smoothly.
The problem seems to only occur on first start of any direction on any axis. One their running I can stop and start. many times their after.
Another way of getting them to stall reliably. is to perform an "Axis Calibration" this will almost always cause the motors to stall.
Example.
Run first test... Motors stall for about a second then proceed as normal.
Run second test. Same results.
Run same test but jog motors any direction. just before hand... no stalling.
Using the above example. I have even adjusted the motor tuning down from say 250 to as low as 20. all with the same results.
My apologies If I have not explained my symptoms correctly.
One last injection. I have ran a sample g code file with as much as 12K lines of code. and ran with out a hiccup.
BUT... the actual first movement stalled. my solution. re home. Re jog... then re run the g code file.
-S