Siemens SINAMICS S120 Commissioning Manual page 124

Commissioning
5.3 Creating a project offline
Many of the following settings depend on the set drive object type. The setting of the correct
type is therefore prerequisite for all other settings during the commissioning and
parameterization of the Motor Module or Power Module.
Important notes
• If you change the drive object type subsequently, there is a danger that the configuration of
some components is lost and has to be repeated.
Therefore, ensure that you first set the drive object type in the device configuration, and only
then add and specify the motor, measuring systems or supplementary system components.
Differences between Motor Modules and Power Modules
• Motor Modules are intended for single-axis and multi-axis applications.
• Power Modules are intended for single-axis applications (generally, without an infeed unit).
Inserting and configuring
In the Startdrive engineering tool, Motor Modules and Power Modules are inserted into the
device configuration in almost the same way. The device configuration of the drive requires at
least one of the specified modules.
Overview
When creating Motor and Power Modules, the drive object types "Highly dynamic (servo)" and
"Universal (vector)" can be selected. With SINAMICS, the terms "servo control" and "vector
control" are also used.
Servo control features
The motor connected to servo control is simulated in a vector model based on data from the
equivalent circuit diagram. This means that the servo control is also a vector control. However,
the servo control optimizes the vector model according to other criteria. In favor of achieving a
high dynamic performance, a small deterioration in the control accuracy and control quality is
accepted.
Special features of the servo control include:
• Maximum computing speed
• Shortest sampling times
• High dynamic response
• Operation with encoder
Due to the computing speed required, no model calculation of the actual values is used in the
servo control. As a result, only operation with encoders is possible.
• Is used preferably with dynamic, permanent-magnet synchronous motors.
122
Commissioning with Startdrive
Commissioning Manual, 06/2020, 6SL3097-5AA10-0BP2