Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 593)

Adaptive Feed & Depth Parameters
Chapter 32
32-7
After you have copied the adaptive depth controlling axis into the adaptive
depth axis make the following additional settings:
Servo Parameter: For Adaptive Depth Probe:
Number of Motors on 1st Board You must count the adaptive depth probe as an active servo on
the board. For example if you had two servos attached to the
board and one adaptive depth probe you must still set this
parameter at “THREE” (this will be the same value for both the
controlling axis and the adaptive depth axis).
Number of Motors on 2nd Board See description for Number of Motors on 1st Board
Servo Position Loop Type Select “Depth Probe” for the loop type.
Position Loop Feedback Port Select the port the adaptive depth probe is connected to. This port
must be on the same servo module as the probe controlling axis.
Position Loop Feedback Type Refer to the specifications of your depth probe. Typically depth
probes are configured as INC Encoder A/B/Z (Z
Position Feedback Counts/Rev Enter the number of counts your depth probe produces per inch or
per mm (depending on the units you are using as selected with the
F3 option this may be counts per foot, inch, meter, centimeter, or
millimeter). If the resolution on your probe is not an even number
of counts per inch (or mm), compensate for this using the
parameter Lead Screw Pitch.
The resolution of the adaptive depth probe must be close to or
higher than the axis encoder resolution it is paired with when the
adaptive depth probe is selected to close the position loop. If the
resolution of the probe is too coarse relative to the axis it is paired
with, the control generates an error doesn’t come out of E-STOP.
Lead screw thread pitch Enter the dimension used in the denominator of the parameter
Number of Position Feedback Counts/Rev. For example if you
entered 2000counts/1inch this parameter must be set at 1.000
inch. If you entered 3000counts/.5inch this parameter must be set
at 0.5000 inch.
Sign of Position Feedback After you have finished installing/configuring your probe, check the
axis monitor page on the control’s CRT to determine which
direction the probe is counting when deflecting. The probe must
count in the same direction as the setting of Controlling Axis
Trigger Dir . If the probe counts in the wrong direction, rather than
re-wiring the probe feedback, you can simply reverse the sign of
this parameter.
For more information on setting this parameter, see the section
after this table called “Setting Trigger Direction and Feedback
Direction”
Output Port Number Must be set as “No Output”.
Teeth on motor gear for pos. FB Must be set at “1”.
Teeth on lead screw for pos. FB Must be set at “1”.