HEIDENHAIN TNC 426, User Manual

Page: 47 / 502

HEIDENHAIN TNC 426, TNC 430 21
2.3 Spindle Speed S
, F
e
ed Rat
e
F and Miscellaneous F
unctions M
2.3 Spindle Speed S, Feed Rate F
and Miscellaneous Functions M
Function
In the operating modes Manual Operation and Electronic Handwheel,
you can enter the spindle speed S, feed rate F and the miscellaneous
functions M with soft keys. The miscellaneous functions are
described in Chapter 7 “Programming: Miscellaneous Functions.”
Entering values
Spindle speed S, miscellaneous function M
To enter the spindle speed, press the S soft key.
Enter the desired spindle speed and confirm your
entry with the machine START button.
The spindle speed S with the entered rpm is started with a
miscellaneous function M. Proceed in the same way to enter a
miscellaneous function M.
Feed rate F
After entering a feed rate F, you must confirm your entry with the ENT
key instead of the machine START button.
The following is valid for feed rate F:
n
If you enter F=0, then the lowest feed rate from MP1020 is effective
n
F is not lost during a power interruption
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 machine tool builder determines which miscellaneous
functions M are available on your TNC and what effects
they have.
SPINDLE SPEED S =
1000
The override dial for spindle speed is only functional on
machines with infinitely variable spindle drive.