HEIDENHAIN TNC 640 (34059x-02) - Manual (Page 380)

Programming: Special functions
11.3 Adaptive Feed Control Software Option (AFC)
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TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 5/2013
Column Function
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F: NC stop if the tool has been retracted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.
POUT Spindle power at which the TNC is to detect tool
exit from the workpiece. Enter the value in percent
of the learned reference load. Recommended input
value: 8 %
SENS Sensitivity (aggressiveness) of feedback control. A
value between 50 and 200 can be entered. 50 is for
slow control, 200 for a very aggressive control. An
aggressive control reacts quickly and with strong
changes to the values, but it tends to overshoot.
Recommended value: 100
PLC
Value that the TNC is to transfer to the PLC at
the beginning of a machining step. The machine
tool builder defines the function, so refer to your
machine manual.
In the AFC.TAB table you can define as many control
settings (lines) as desired.
If there is no AFC.TAB table in the
TNC:\table
directory, the TNC uses permanently defined internal
control settings for the teach-in cut. It is best,
however, to work with the AFC.TAB table.