Siemens SINUMERIK 840D sl Commissioning Manual page 338

Drive tuning
10.7 Circularity test
Machine data for setpoint filter:
● MD32402 $MC_AX_JERK_MODE = Type 2 is recommended, type 1 is preset for
compatibility reasons. Parameterizing a pure band-stop filter is expressly not
recommended.
● MD32402 $MA_AX_JERK_MODE (filter type) and MD32410 $MA_AX_JERK_TIME > 0 is
effective only if MD32400 $MA_AX_JERK_ENABLE = 1 is set.
Example 1 for optimization
Machine data after optimization of the axes:
Parameters / machine data
MD32200
p1460
p1462
p1463
p1440
MD32610
MD32620
MD32810
MD32400
The actual value of the radius is generally too large with optimized feed precontrol. This can be
corrected with the MD32410 $MC_AX_JERK_TIME time constant. Use a time constant in all
axes if required.
This circle displays the results after the feed precontrol has been optimized. However, the
mean radius is 0,0019 mm too large:
X1: active measuring system
Z1: active measuring system
Parameters / machine data
MD32200
p1460
p1462
338
$MC_POSCTRL_GAIN
SPEEDCTRL_GAIN1
SPEEDCTRL_INTEGRATOR_TIME_1
SPEEDCTRL_REF_MODEL_FREQ
NUM_SPEED_FILTERS
$MC_VELO_FFW_WEIGHT
$MC_FFW_MODE
$MC_EQUIV_SPEEDCTRL_TIME
$MC_AX_JERK_ENABLE
$MC_POSCTRL_GAIN
SPEEDCTRL_GAIN1
SPEEDCTRL_INTEGRATOR_TIME_1
X axis
8.500
3.01
6.18
106.3
0.0022
Parameter
Radius:
Feedrate:
Measure‐
ment time:
X1: active measuring system
Z1: active measuring system
Representation
Resolution:
Display of. mean radius
Radius:
Delta R:
X axis
8.500
3.01
6.18
CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA
Z axis
8.500
3.89
6.18
106.3
0 0
1.0 1.0
4 4
0.0022
0 0
10.00000 mm
3000.00000 mm/min
1257 ms
0.01000 mm
10.00190 mm
4.02698 μm
Z axis
8.500
3.89
6.18