Technology Option F01 08.2012
6SE7087-6QX70 (Version AN) Siemens AG
9-56 Compendium Motion Control SIMOVERT MASTERDRIVES
When the extrapolation option is used, the setpoint is conditioned as
follows:
P770 = +2
Δ-max
P771
Position
setpoint before
extrapolation
Position setpoint
Position setpoint
after extrapolation
Fig. 9-23
The loop gain factor represents the proportional gain of the position
controller. It is defined such that the setting is independent of the
encoder resolution and the traversing velocity from the perspective of
the user.
It is important that the rated velocity in P205 actually represents the
velocity of the drive at 100 % speed setpoint (defined in P353).
Example:
Reference speed of motor: 3000 rpm (P353)
Gear factor: 1:10
Diameter: 300 mm
V = Reference speed
1
i
Diameter
V = 3000 rev / min
1
10
300 mm
V = 282743
mm
min
×× ×
×× ×
π
π
This rated velocity must be entered in P205 and must also be entered
in MD23 [804] if the technology option is used.
Loop gain factor
P204
V
rated
P205
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