Lenze EVS9332xK - Manual (Page 287)

Function library
Function blocks
3.2.81 Delay element (PT1−2)
3−259
l
EDSVS9332K−EXT EN 4.0
Setting the filter time constant
C0643 serves to set the filter time constant T (delay time). The proportional coefficient is predefined
as K = 1.
Setting information
l The higher the value set, the greater the filter effect.
l The higher the value set, the greater the phase displacement between input and output signal.
t
T
K = 1
Fig. 3−210 Delay T of the first order delay element
Switching off filter and compensating phase displacement
The filter is switched on and off via the input PT1−2−DISABLEFILTER.
l PT1−2−DISABLEFILTER = LOW
– The filter is switched on.
l PT1−2−DISABLEFILTER = HIGH
– The filter is switched off. All increments in the filter and overflow buffer are still output.
– The input signal is directly output at the output.
)
Note!
Always set the input PT1−2−DISABLEFILTER = HIGH
l when the controller is inhibited,
l during acceleration phases.
Compensation of the phase displacement when filter is on
C0646/1 serves to set the compensation of the phase displacement (compensating speed).
l Setting information
– The higher the value set, the greater the dynamics.
– The higher the value set, the worse the filter effect.
– If C0646/1 = 0, the position will be lost.
Compensation of the phase displacement when filter is off
C0646/2 serves to set a compensating speed to compensate the phase displacement between input
and output signal. The output phase displacement at PT1−2−DIFF is compensated "smoothly".
l Setting information
– The smaller the value set, the slower the compensation of the phase displacement.
– If C0646/2 = 0, the position will be lost.