Lenze DDS Function library Drive - Manual (Page 38)

2.2.16 S−ramp generator (L_SRFG)
Function library LenzeDrive.lib
Analog signal processing
2−28
L
LenzeDrive.lib EN 1.7
Function
Load ramp generator
·
By using bLoad_b = TRUE loads the ramp generator with the signal at nSet_a.
·
This value is instantly accepted and output to nOut_a. No ramp−up or ramp−down through an
S−curve takes place.
·
As long as bLoad_b remains = TRUE, the ramp generator is disabled.
Acceleration and jerk
The maximum acceleration and the jerk can be adjusted separately.
n I n _ a
n O u t _ a
t
t
t
t
d w T i
d w T i
d w J e r k
R
Q
n D e l t a O u t _ a
Fig. 2−31 Line diagram
 Acceleration
‚ Jerk
·
Max. acceleration:
– By using dwTi you set the positive as well as the negative acceleration.
– The setting is calculated according to the formula:
1 s @ 100 %
dwTi
·
Jerk:
– By using dwJerk you set up a jerk−free acceleration of the drive.
– The jerk is entered in [s] until the ramp generator operates with maximum acceleration (see
Fig. 2−31).