Start-Up
4.7 Commissioning
4-91
SINUMERIK 802S
6FC5 597–2AA00–0BP2 (01.02)
Dynamic adaptation for thread G331/G332
Function
The dynamic response of spindle and involved axis for the function G331 / G332– thread in-
terpolation – can be adapted to the “slower” control loop. Usually, this concerns the Z axis,
which is adapted to the more inert response of the spindle.
If an exact adjustment is carried out, it is possible to sacrifice of a compensating chuck for
tapping. At least, higher spindle speeds/smaller compensation paths can be achieved.
Activation
The values for the adaptation are entered in MD 32910 DYN_MATCH_TIME [n], usually for
the axis.
The adaptation is only possible if MD 32900 DYN_MATCH_ENABLE =1 has bee set for the
axis/spindle.
With the function G331/G332 active, parameter block n (0...5) of the axis of
MD 32910 acting corresponding to the spindle gear stage automatically becomes active. The
gear stage is dependent on the spindle speed with M40 or is set directly via M41...M45 (see
also Section 4.5.3 “Start–up of the spindle”).
Number Description
Default
Value
32900 Dynamic response adaptation 0
32910 Time constant of dynamic adaption (control parameter set no): 0...5 0.0
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, deno-
minator) must also be entered in all of the remaining parameter sets used for thread opera-
tions, in addition to the parameter set with index =0.
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