HEIDENHAIN TNC 407 (243 020) Service Manual - Manual (Page 92)

SERVICE MANUAL TNC
Issue:
01.09.1995
Page
76
16.3 Switching Over the Position Display
16.4 Feed Adjustment
Function
Switch TNC to operating mode MACHINE
Prepare TNC to be switched over to position display
Press ENT to switch to desired position display
ACTL, REF. LAG,
Press soft key to switch the TNC to the
operating mode EDITING
Check/adjust the machine parameters. (Note down the original values before changing.)
MP Entry Function Original Value
1390 0
Feed precontrol ON
in the automatic operating modes
7290 0 Display step = 1
Switch the position display to LAG (display of servo lag).
Enter the following test program:
e.g. 1 LBL 1
2 x 1 0 0 RO M (select a larger traverse range if possible)
3 x 0 F M
4 CALL LBL 1 REP 10
Run the test program in the operating mode PROGRAM RUN/FULL SEQUENCE.
Adjust the feed at the servo amplifier (tachometer) until the servo lag display is approx. zero for
positioning in both directions.
Repeat adjustment for all axes.
Reset the machine parameters and the position display to the
original values.