Basic Information about the Drive System
Parameters
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E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
7.1 Parameters
Parameter types
The following adjustable and visualization parameters are available:
S Adjustable parameters (read/write)
These parameters have a direct impact on the behavior of a function.
Example: Ramp-up and ramp-down of ramp generator
S Visualization parameters (read only)
These parameters are used to display internal variables.
Example: Current motor current
para_arten.vsd
Parameter
read (r ...) read/write (p ...)
BICO output “Normal”
read-only parameters
BICO input
read/write parameters
“Normal”
“Normal”
Fig. 7-1 Parameter types
All these drive parameters can be read and changed via PROFIBUS using the
mechanisms defined in the PROFIdrive profile.
Parameter categories
The parameters of the individual drive objects (see Section 7.2) are categorized in
data sets as follows (see Section 7.2):
S Data-set-independent parameters
These parameters exist only once per drive object.
S Data-set-dependent parameters
These parameters can exist several times for each drive object and can be
addressed via the parameter index for reading and writing. A distinction is made
between various types of data set:
– CDS: Command Data Set (see Section 7.2)
By parameterizing several command data sets and switching between them,
the drive can be operated with different pre-configured signal sources.
– DDS: Drive Data Set
The drive data set contains the parameters for switching between different
drive control configurations.
The CDS and DDS can be switched over during normal operation. Further
types of data set also exist, however these can only be activated indirectly by
means of a DDS switchover.
S EDS (Encoder Data Set)
S MDS Motor Data Set (available soon)
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