HEIDENHAIN MANUALPLUS 620 - Page 1116

1116 HEIDENHAIN Technical Manual MANUALplus 620
 Enter the calculated value in the parameter MP_maxAcceleration and
check the calculated value by performing a measurement with the internal
oscilloscope.
4. Determining the
k
v
factor
 Enter the following test program:
BEARBEITUNG [MACHINING]
N 1 G94 F2000
N 2 G1 X100
N 3 G1 X0
N 4 M99
END
The test program should be structured so that the axis reaches the nominal
velocity.
 Run the program at high speed (feed-rate override = 100 %).
 With the integrated oscilloscope, record the nominal feed rate (v nom), the
actual feed rate (v act), and if desired, the servo lag (s diff) as well.
 Perform the first measurement with the temporary k
v
factor (15).
 Increase the k
v
factor until the oscillation limit is reached.
 Calculate the starting value of the MP_kvFactor with the following formula:
MP_kvFactor = <determined value of the oscillation limit> · 0.5
Warning
Every transmitted nominal value step causes high stress to the machine
mechanics. Now reset the temporary input values in CfgPositionFilter to
the initial values before continuing commissioning.
Machine parameters in the configuration
editor
Temporary
starting value
Meaning
Axes
ParameterSets
[Key for parameter set]
CfgPosControl
kvFactor 15 k
v
factor
Note
If the starting value entered causes the control loop to oscillate, the value
must be reduced.