Parameterization - Siemens SINUMERIK 840D Function Manual

12.2.18.2

Parameterization

Activation
The jerk filter is activated using machine data:
MD32400 $MA_AX_JERK_ENABLE (axial jerk limitation)
The jerk filter is active in all operating modes and with all types of interpolation.
Filter type
The filter type is selected via the machine data:
MD32402 $MA_AX_JERK_MODE (filter type for axial jerk limitation)
Value
1
2
3
4
5
Axial jerk filter (1, 2, 3)
The axial jerk filters are set using the following machine data:
● For filter types 1 and 2 with MD32410 $MA_AX_JERK_TIME.
● For filter type 3 using machine data MD32412 AX_JERK_FREQ and MD 32414
AX_JERK_DAMP.
The jerk filter is only effective when the time constant is greater than a position control clock
cycle.
Double moving average calculation (4)
A double moving average calculation requires that the following machine data are set:
● MD32410 $MA_AX_JERK_TIME
● MD32411 $MA_AX_JERK_TIME_ADD
If both machine data are parameterized the same, a delta filter is implemented, which produces
extremely strong damping, but also significant contour distortion.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
Filter type
2nd order filter
Moving average calculation
Band-stop
Double moving average calculation
FIR lowpass
B2: Acceleration and jerk
12.2 Functions
377