Rockwell Automation 8520-GUM 9/Series CNC Grinder Operation and Programming Manual Documentation Set - Manual (Page 714)

In-process Dresser
Chapter 21
21-8
Dresser Disable
When the in-process dresser is disabled, the control automatically retracts the
roll away from the grinding wheel using the dresser axis. The amount the
dresser is retracted is configured on the in-process dresser status page. See
page 21-10 for information on the “Dresser Retract Distance” parameter.
The feedrate that the dressing tool is retracted away from the grinding
wheel is configured in AMP as the retract feedrate. Once the dresser
reaches the retract position, the control updates the wheel length offset
values for length offsets 01, 02, 03, and 04, and updates the radius offset
number 33.
ATTENTION: When the control enters E-STOP while the
in-process dresser is active, the dresser axis can perform a dresser
retract operation when E-STOP reset is performed. This is
because an E-STOP reset will typically deactivate the in-process
dresser. It is the system installer’s responsibility to make sure
that the in-process dresser is not disabled in PAL at E-STOP
reset. This will make certain that this motion does not occur.
When the in-process dresser is disabled, the dressing axis can be positioned
as any other positioning axis (i.e., it accepts normal programming
commands and can be jogged or positioned through the PAL axis mover).
Important: The in-process dresser feature cannot be disabled if
dresser/wheel radius compensation (G41 or G42) is active. If an attempt is
made to cancel the in-process dresser feature when compensation is active,
the control postpones the deactivation of the in-process dresser until
compensation is turned off (G40).
This section covers the parameters used to control how the in-process
dresser operates. This section assumes that the in-process dresser has
already been configured correctly in AMP. See your AMP reference
manual. Only operating parameters can be changed on line (at the
control). Basic configuration parameters must be modified in AMP.
Table 21.A lists the in-process dresser parameters found on the in-process
dresser status screen. See page 21-11.
Important: IPD works only with spindle 1. If your system is configured
for two spindles, IPD looks at spindle 1 and ignores spindle 2.
21.3
On-line In-process Dresser
Parameters