HEIDENHAIN TNC 640 User Manual page 517

Special Functions | Adaptive Feed Control AFC (option 45)
Column Function
OVLD
Reaction that the control is to perform in case of
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F: NC stop if the tool has been retracted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
L: Disable active tool
-: No overload reaction
The control conducts the selected shutdown
response if the maximum spindle power is exceed-
ed 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.
In conjunction with the cut-related tool wear
monitoring the control only evaluates the options M
and L.
Further information:
page 527
POUT
Spindle power at which the control is to detect that
the tool moves out of the workpiece. Enter the value
in percent of the learned reference load. Recom-
mended 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 control is to transfer to the PLC at
the beginning of a machining step. The machine
manufacturer defines the function, so refer to your
machine manual.
HEIDENHAIN | TNC 640 | ISO Programming User's Manual | 10/2017
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