Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set User Manual
Page 698
Integrating a Split Axis with Deskew
Section 14B
14B-4
The difference for a split axis is that the distance to the nearest marker is
calculated independently for the two servos and their home calibrations are
configured separately. The move to the calibrated home position is
calculated and executed independently and simultaneously on the master
servo and slave servo.
In order for this home position for both servos to be one where minimum
axis skew exists, it is necessary to align encoder markers. The
recommended method of aligning markers is as follows:
1.
Physically position the axis so that minimal skew exists. Measure
skew on the axis with a precision square, dial indicator, or any device
you find to be the most precise for your application.
2.
Turn power to the control off and on again. When power is turned
back on the servos will assume that they are in position and will hold
the axis at minimal skew.
ATTENTION: Do not home the axis at this time. Any attempt
to home the axes can result in large skew error and damage the
servo drive components.
3.
Access the axis monitor screen using the following softkey strokes.
a.
Press the [SYSTEM SUPORT] softkey.
b.
Press the [MONITOR] softkey.
c.
Press the [AXIS MONITOR] softkey.