Siemens SINAMICS S120 - Page 230

Basic Information about the Drive System
Data sets
7-230
E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
Example: Switching between command data set 0 and 1
cds_1.vsd
t
1
2
t
Switchover time
r0050 = 0
p0810 (0)
0
0
1
1
r0050 = 1
CDS
CDS active
r0836 = 0
r0836 = 1
CDS selected
Fig. 7-3 Switching the command data set (example)
DDS: drive data set
A drive data set contains various adjustable parameters that are relevant with re-
spect to open and closed-loop drive control:
S Numbers of the assigned Motor and Encoder Data Sets:
– p0186: assigned motor data set (MDS)
– p0187 to p0189: up to 3 assigned encoder data sets (EDS)
S Various control parameters, e.g.:
– Fixed speed setpoints (p1001 to p1015)
– Speed limits min./max. (p1080, p1082)
– Characteristic data of ramp-function generator (p1120 ff)
– Characteristic data of controller (p1240 ff)
– ...
The parameters that are grouped together in the drive data set are identified in the
SINAMICS parameter list by “Data Set DDS” and are assigned an index [0..n].
It is possible to parameterize several drive data sets. You can switch easily be-
tween different drive configurations (control type, motor, encoder) by selecting the
corresponding drive data set.