HEIDENHAIN TNC 407 (280 580) ISO Programming - Manual (Page 66)

TNC 426/TNC 425/TNC 415 B/TNC 407 2 - 5
2 Manual Operation and Setup
Fig. 2.4: Knobs for spindle speed and feed
rate overrides
1 e.g. 0 0 0
ENT
I
S%
F%
0
100
150 50
S %
0
100
150 50
F %
0
100
150 50
S %
To change the spindle speed S:
Turn the knob for spindle speed override:
You can vary the spindle speed from 0% to 150% of the last entered
value.
The knob for spindle speed override is effective only on machines with a stepless spindle drive.
2.2 Spindle Speed S, Feed Rate F and Miscellaneous Functions M
These are the soft keys in the MANUAL OPERATION and ELECTRONIC
HANDWHEEL modes:
With these functions and with the override knobs on the TNC keyboard
you can change and enter:
• spindle speed S
• feed rate F (only via override knob)
• miscellaneous functions M
These functions are entered directly in a part program in the
PROGRAMMING AND EDITING mode.
To enter the spindle speed S:
The machine tool builder determines which spindle speeds are allowed on your TNC. Your machine manual
provides more information on the available spindle speeds.
Select S for spindle speed.
SPINDLE SPEED S =
Enter the desired spindle speed (for example, 1000 rpm).
Press the machine START button to confirm the entered spindle
speed.
The spindle speed S with the entered rpm is started with a miscellaneous
function M.