HEIDENHAIN TNC 640 (34059x-05) - Manual (Page 402)

Programming: Special functions
11.3 Adaptive feed control AFC (Option #45)
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TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 1/2015
Defining the AFC basic settings
You make the control settings for the TNC feed rate control in the
table
AFC.TAB, which must be saved in the root directory
TNC:
\table.
The data in this table are default values that were copied during
a teach-in cut into a file belonging to the respective program and
serve as the basis for control. The following data are to be defined
in this table:
Column Function
NR
Consecutive line number in the table (has no further
functions)
AFC
Name of the control setting. You enter this name
in the
AFC column of the tool table. It specifies the
assignment of control parameters to the tool.
FMIN Feed rate at which the TNC is to conduct a
shutdown response. Enter the value in percent with
respect to the programmed feed rate. Input range:
50 to 100 %
FMAX
Maximum feed rate in the material up to which the
TNC can automatically increase the feed rate. Enter
the value in percent of the programmed feed rate.
FIDL
Feed rate for traverse when the tool is not cutting
(feed rate in the air). Enter the value in percent of
the programmed feed rate.
FENT Feed rate for traverse when the tool moves into or
out of the material. Enter the value in percent with
respect to the programmed feed rate. Maximum
input value: 100 %
OVLD Desired reaction of the TNC to overload:
M: Execution of a macro defined by the machine
tool builder
S: Immediate NC stop
F: NC stop if the tool has been retracted
E: Just display an error message on the screen
-: No overload reaction
The TNC conducts a shutdown response if the
maximum spindle power is exceeded for more than
one second and at the same time the feed rate falls
below the minimum you defined. Enter the desired
function via the ASCII keyboard.