HEIDENHAIN TNC 151 Q Mounting Instructions page 85

8.8.2 Approach speed 1 pm before nominal position for "square root characteristic"
Parameter 53 influences the gradient of the deceleration ramp in the vicinity of the nominal position.
Adjustment is carried out as follows:
i
PROGRAMMING dl7ND EDITING mode
q
enter following program:
LBL 1
X 100 RO F 15999
X OROF
CALL LBL 1 REP lOO/lOO
In
PROGRAM RUN SINGLE BLOCK
mode
q
press ext. start, program runs.
Observe position display
Parameter 53: Increase entry value until the position is
clearly crossed over (parameter 65 in entry 0).
Parameter 53: Decrease entry value until crossing
over of position is normal.
c
Check positioning of Y, Z and IV-axes.
If necessary, amend parameter 53.
1
8.8.3 Polsition supervision for "square root characteristic"
Machine parameters 56, 57 :
With paralmeters 56 - position supervision (erasable) - and 57 - position supervision (emergency stop) -
ranges for constant position supervision are defined. This supervision is effective as soon as the machine axes
are being held in a closed loop condition by the control (after crossing reference points).
If the limits of parameter 56 are exceeded, a control stop will take place (error code POSITIONING ERROR).
However, if the limits of parameter 57 are exceeded, the control will react with an emergency stop. The error
display POSITIONING ERROR can be cancelled with the press of a key, but the "emergency stop" can only
be cancelled by switching off the mains power and traversing the axes over the reference marks. Recommended
entry values:
Machine IParameter
I I
No. Entry value Supervision range
Position supervision (erasable)
Position supervision (non-erasable)
+ 0,5 mm
+lO mm
*If the machine drives permit a closer limit, this should be programmed.
85