HEIDENHAIN iTNC 530 (606 42x-01) - Manual (Page 533)

HEIDENHAIN iTNC 530 533
14.3 Spindle Speed S
, F
eed Rat
e
F and Miscellaneous F
unctions M
Changing the spindle speed and feed rate
With the override knobs you can vary the spindle speed S and feed
rate F from 0% to 150% of the set value.
The override knob for spindle speed is only functional on
machines with infinitely variable spindle drive.