Siemens SINAMICS S120 - 5 Drive Functions; Block Diagram of Closed-Loop Control

Hydraulic Drive
System Manual, 04/2015, 6SL3097-4BA00-0BP1
139
Drive functions
5
5.1
Block diagram of closed-loop control
System integration
Diagrams showing how the HLA module is principally embedded between the control system
and the hydraulic drive – as well as additional logic overviews are provided in the function
diagrams:
•
4965
Figure 5
-8 Function diagram 4965 - velocity controller (Page 155)
•
4966
Figure 5
-18 Function diagram 4966 - transition point compensation (Page 179)
•
4970
Figure 5
-14 Function diagram 4970 - force controller (Page 171)
•
4975
Figure 4
-36 Function diagram 4975 – valve characteristic and plane adaptation
(Page 103)
The control-related functions of the HLA module are shown in greatly simplified form. They
are shown in more detail in the following.
Possible dynamic response
The dynamic response that can be achieved depends on the following values:
● Natural frequency of the servo solenoid valve
● Natural frequency of drive
With increasing natural frequency, a higher dynamic response can be achieved.
For the purpose of oscillation damping, the natural frequency of the servo solenoid valve
must be greater than that of the drive.