24 |
WID EC U RE
®
C ON VEYO R U SER GU ID E
D YMAX. C O M
Stage Errors
The stage is controlled by an open-loop stepper motor. From time to time, the stage may lose count of the steps taken, and
consequently, its distance from the limit switches. If this happens, please follow the steps below to remediate the problem:
If during a move the machine begins to dither (stutter, or a grinding sound) one of two things will happen:
•
The machine will catch itself, and continue to finish the move.
If this happens, the machine should be homed to re-establish the correct height and then moved to the desired original
height.
•
The machine will not move and just dithers in place.
Move the machine down an inch below the original position. For example, if the machine was at
9”
,
and 12” was
commanded,
the machine will report 12” without having moved.
Ty
pe in 11” to move it down
1
”
.
After the machine moves successfully down 1”, home the machine
and move it to the original desired location.
If during a homing sequence, the machine stalls or dithers the following should be done to correct it:
•
Depress the e-stop button to disable the stepper drive
•
Reset the system to try and home the machine again
•
If it is still dithering, e-stop the machine and reset once more
1.
On the stage sub-screen from the engineering menu, jog the stage down in one inch increments to get it off of
the “stuck s
po
t”
2.
The numeric display next to the jog buttons will then be a relative distance from where it was stuck
3.
attempt to re- home the machine from the main screen
