Additional Functions; Function Diagrams And Parameters - Siemens SINAMICS S120 Function Manual

You have the following options to determine the characteristic:
● You already know the characteristic from other measurements. In this case, you must set
the parameters to known values when commissioning the system.
● The converter iteratively determines the characteristic by performing measurements while
the motor is operational.
9.12.2.2

Additional functions

In addition to the precontrol, the following supplementary functions for the moment of inertia
estimator are also available for vector control:
● Accelerated moment of inertia estimation (p1400.24 = 1)
Using this setting, when the drive accelerates steadily, the moment of inertia can be more
quickly estimated.
● Speed controller adaptation (p5271.2 = 1)
The estimated load moment of inertia is taken into account for the speed controller gain.
9.12.3

Function diagrams and parameters

Function diagrams (see SINAMICS S120/S150 List Manual)
● 5035
● 6035
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● r0108
● r0333[0...n]
● p0341[0...n]
● p0342[0...n]
● p1226[0...n]
● p1400[0...n]
● p1402[0...n]
● r1407.0...26/27
● r1493
● p1496[0...n]
● p1497[0...n]
● p1498[0...n]
● p1502[0...n]
● r1518[0...1]
● r1538
● r1539
Drive functions
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Servo control - moment of inertia estimator (r0108.10 = 1)
Servo control - moment of inertia estimator (r0108.10 = 1)
Drive object function module
Rated motor torque
Motor moment of inertia
Ratio between the total and motor moment of inertia
Speed threshold for standstill detection
Speed control configuration
Current control and motor model configuration
CO/BO: Status word, speed controller
CO: Total moment of inertia (scaled)
Acceleration precontrol scaling
CI: Moment of inertia scaling signal source
Load moment of inertia
BI: Freezing the moment of inertia estimator
CO: Acceleration torque
CO: Upper effective torque limit
CO: Lower effective torque limit
Function modules
9.12 Moment of inertia estimator
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