HEIDENHAIN TNC 415 (259 9x0) Service Manual - Manual (Page 130)

SERVICE MANUAL TNC 415B/425
Page 125
Issue: 20.08.95
18.4 Adjustment of the Feed Rate
18.4.1 Axes with Analogue Speed Controller
Check and adapt the machine parameters (note down the original entry values).
MP Entry Value Function Original Entry Value
1390 0 feed forward control 1) ON
in automatic operating modes
7290.X 6 display step = 0.1 µm
•
Switch position display to LAG (servo lag).
•
Enter the following test program (e.g. for X axis)
0 BEGIN PGM X MM
1 LBL 1
2 X + 0 F MAX
3 X + 100 F MAX
(select a larger traverse range if possible!)
4 CALL LBL 1 REP 100/100
5 END PGM X MM
•
Run the test program in the operating mode "PROGRAM RUN / FULL SEQUENCE".
•
Adjust the feed rate at the servo amplifier (tachometer) until the servo lag display is approximately
zero for positioning in both directions.
•
Repeat the adjustment for all axes.
•
Reset the machine parameters and the position display to the original values.
1) The operating mode "feed forward control" must be optimized.
18.4.2 Axes with Integral Digital Speed Controller
Depending on the machine parameter MP1900 the driving axes of TNC 425/E are individually defined
as analogue axes (as TNC 415 B/F) or as digital axes.
With axes with integral digital speed controller (corresponding bit of MP1900 = 1) the feed
adjustment of the servo amplifier as described in section 18.4.1 is not required.