Lenze EVS9332xK - Manual (Page 317)

Function library
Function blocks
3.2.89 Position switch points (SPC)
3−289
l
EDSVS9332K−EXT EN 4.0
Negative dead time
I N x - 1 I N x - 2 S P 2 - L - I N
S P 2 - S T A T x
H I G H
L O W
T d e a d
T
d e a d
T r a v e l d i r e c t i o n
( n e g a t i v e d e a d t i m e )
Fig. 3−237 Function of the negative dead time
l With a negative dead time, the switching of the output is delayed by the time set.
3.2.89.4 Filter time constant
This function is only available for FB SPC2.
Purpose
Avoids undefined switching of the output signals at SPC2−STAT1 ... SPC2−STAT4 when the motor is
running at low speed.
Function
l The filter time constant is selected under C1659.
– This setting is valid for SPC2−STAT1 ... SPC2−STAT4.
Assignment of code and filter time constants:
Code Value Filter time constant
C1659 0 Off
1 1 ms
2 2 ms
4 4 ms
8 8 ms
16 16 ms
)
Note!
The correct setting can only be determined by testing. Basically, however, the
following applies:
The lower the resolution of the actual position encoder and the lower the travel
speed, the higher the filter time constant.