Siemens SINUMERIK 840D sl Function Manual page 441

Figure 5-32
Adaptation of the decay time
In special cases, it is possible to adapt the decay time of the compensation setpoint pulse in
addition to the compensation amplitude.
If, for example, the circularity test reveals that in the low acceleration range (a
transitions yield good compensation results but that radius deviations occur again
immediately after this, it is possible to achieve an improvement by adapting the decay time.
The time constant without adaptation ($AA_QEC_TIME_1) is only valid in the mid
acceleration range (50%).
The adaptation of the decay time for the compensation setpoint impulse according to the
characteristic shown in the diagram below is parameterized with system variable
$AA_QEC_TIME_2 (for acceleration = 0). The adaptation is formed by these two points
according to an e
The adaptation is performed under the following condition: $AA_QEC_TIME_2 >
$AA_QEC_TIME_1
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Interval width in acceleration ranges
function (see diagram below).
-x
Compensations (K3)
Neural quadrant error compensation
) the quadrant
1
441