Start-Up
SINUMERIK 802S base line
4-41
Start-Up
Note
For axes involved in tapping or thread cutting, the same parameter set number
is activated as with the current gear stage of the spindle (see “Description of
Functions”, Section 3.2).
For example, if a load gear is active for an axis, then this transmission ratio
(numerator, denominator) must also be entered in all of the remaining
parameter sets used for thread operations, in addition to the parameter set with
index =0.
Determination of value
The dynamic value of the spindle is stored for each individual stage in MD
32200 POSCTRL_GAIN[n] as closed-loop gain. An adaptation of the axis to
these values must be made in MD 32910 DYN_MATCH_TIME [n] in
accordance with the following instruction:
1 1
MD 32910 DYN_MATCH_TIME[n] =
Kv[n] Spindle Kv[n] axis
The entry to be made in MD 32910 requires the time unit s. The values of MD
32200 POSCTRL_GAIN[n] for spindle and axis must be converted
accordingly:
1000
K
v
[n]
spindle
= POSCTRL_GAIN[n]
spindle
-----------
60
1000
K
v
[n]
axis
= POSCTRL_GAIN[n]
axis
-----------------
60
When using further gear stages with G331/G332, the adaptation must also be
carried out in these parameter blocks.
Example for adaptation of the dynamic response of the Z axis/spindle:
1st gear stage -> parameter block[1],
for spindle-K
v,
MD 32200 POSCTRL_GAIN[1] = 0.5 is entered,
for axis Z-K
v,
MD 32200 POSCTRL_GAIN[1] = 2.5 is entered.,
The searched entry for the Z axis in
11
MD 32910 DYN_MATCH_TIME[1] =
Kv[1]Spindle Kv[1] z
11
60
MD 32910 DYN_MATCH_TIME[1] =
0.5 2.5
1000
( )
[
0.0960s
If necessary, for fine adaptation, in practice a more exact value must be
determined.
When traversing axis (e.g. Z axis) and spindle, the exact value for
POSCTRL_GAIN is displayed on the service display.
MD 32900 DYN_MATCH_ENABLE must be set to = 1.
Example: service display for Z axis with POSCTRL_GAIN : 2.437 in 1,000/min
Exact calculation:
11
60
MD 32910 DYN_MATCH_TIME[1] =
0.5 2.437 1000
( )
[
0.0954s
To Next Page
Loading...
