Use of In-situ Dress Capabilities
In-situ dress will dedicate the left chuck to act as a dressing device for the coarse wheel. Therefore, if in-situ
dress is used, the machine will be automatically set for right chuck only grinding. If the machine is returned
to normal grinding and both chucks are to be used, choose both chucks in the Machine Setup screen.
Machine variable number 86 controls the in-situ dress frequency. Setting this variable to 0 (default) will result
in normal operation with no in-situ dress. Setting this variable to 1 will result in dressing the coarse wheel
after every grind, setting it for 2 will be every other grind, and so on.
The dress works by removing the amount of material from the left chuck/dressing block as specified in the
coarse wheel dress recipe. Very low chuck RPM (20 RPM suggested) and dwell revolutions (5 suggested)
should be used to reduce the distance traveled by the probe on the surface. However, the lift step should be
at least several revolutions and enough to clear the surface of the chuck/dressing block to avoid causing
excessive runout.
Touch Screen Support
The AUTOEXEC.BAT and CONFIG.SYS files have been changed to automatically detect and set the
system for one of two possible touch screen systems or a PS/2 mouse if none is present.
7AF Version 3.06 Features
10/2/97 Ken Hill
Purpose
Software version 3.06 for the model 7AF is primarily to provide support for alternative materials grinding. If
upgraded from a version before v3.00, new FloPro runtime software, version 2.776, will be automatically
installed. Likewise, new screen files (.GRS) may be used and are automatically installed. This software must
use Robot Macros, V2_04.MAC or above for ESC 100 controllers and RP212.MAC for ESC 212
controllers! New macros, as described below are included in this release.
Alternative Materials Fine Polish Dwell Start Change
Previously, when polishing alternative materials, the polish dwell began when the Fine Force Limit was
reached. In order to avoid invoking an alarm, the fine polish dwell now begins when force is built to Fine
Dwell LBS (variable 55) plus Hysteresis (variable 56). At this point, force will be reduced to Fine Dwell LBS
and the dwell step will be completed. Therefore, the Fine Force Limit (variable 57) should be set to a force
considerably greater than this start force to indicate a condition such as wheel loading. See Force Limit
Time-out, below.
Force Limit Time-out
Currently, a Force Limit Alarm will stop feeding the wheel, but will not abort the grind process. There is now
a timer for the Fine and Coarse Force Limit that can now be used to cause an Grind Cycle Abort if the Force
Limit continues for the specified time. The variables can be set to operate without Abort (default to current
method), to allow short excursions into the Force Limit or be relatively insensitive to this alarm. The Fine
Force Timeout is set in seconds with variable 74 and the Coarse Force Timeout is set with variable 75. Note
that the alarm must persist for this entire time to cause an Abort. Setting either to zero will operate as the
machine currently does, without abort.
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