HEIDENHAIN TNC 640, User Manual, Page: 547 / 948

Special Functions | Adaptive Feed Control AFC (option 45)
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
547
Operating notes:
If adaptive feed control is active in
Control
mode, the
control executes a shutdown response independent
of the programmed overload reaction.
If, with the reference spindle load, the minimum
feed factor is fallen below
If the programmed feed rate is fallen below by
30%
If you do not explicitly deactivate the adaptive feed
control using the soft key, this function remains
active. The control remembers the setting of the soft
key even if the power is interrupted.
If the adaptive feed control is active in
Control
mode,
the control internally sets the spindle override to
100 %. Then you can no longer change the spindle
speed.
If the adaptive feed control is active in
Control
mode,
the control takes over the value from the feed rate
override function.
Increasing the feed rate override has no influence
on the control.
If you decrease the feed rate override by more
than
10 % with respect to the maximum setting,
the control will switch the adaptive feed control
off. In this case, the control displays a window to
inform you.
In NC blocks containing
FMAX
, the adaptive feed
control is not active .
Mid-program startup is allowed during active feed
control. The control takes the cutting number of the
startup block in account.
The control shows various pieces of information in the additional
status display when adaptive feed control is on.
Further information: "Additional status displays", page 100
In addition, the control shows the or icon in the position
display.