Siemens SINAMICS S120 - Velocity Calibration

Commissioning
4.18 Fine calibration and tuning
Hydraulic Drive
System Manual, 04/2015, 6SL3097-4BA00-0BP1
111
Overview of important parameters (see SINAMICS S120/S150 List Manual)
•
p0240[0...n]
Pressure sensor A reference value at 10 V
•
p0241[0...n]
Pressure sensor A offset correction
•
p0242[0...n]
Pressure sensor B reference value at 10 V
•
p0243[0...n]
Pressure sensor B offset correction
•
p0244[0...n]
Pressure sensor P reference value at 10 V
•
p0245[0...n]
Pressure sensor P offset correction
•
p1832[0...n]
Valve offset
•
p1909
Data identification without enabling activation
•
p1910
Valve offset calibration standstill activation
4.18.4
Velocity calibration
As a result of the valve and drive unit tolerances, the control system gain must be
subsequently adjusted with the objective to achieve a symmetrical actual velocity with
● real planes
● real valve control edges
The objective is to achieve a symmetrical velocity when extending and retracting: Δv
extend
=
Δv
retract
Automatic velocity calibration
The velocity calibration can be performed within the scope of the valve characteristic
measurement (see Chapter "Measurement (Page 87)").
If, in an exceptional case, this automatic calibration function is not sufficient, then you can
manually perform the fine calibration. This fine calibration is described below.
Manual calibration
Calibration is performed using the parameter:
● p1475: Velocity controller loop gain
and
● p1830: HLA factor plane adaptation positive /
p1831: HLA factor plane adaptation negative (stage 2)
To do this, the following controller parameters should be set to a value = 0:
● P: P gain velocity controller (p1460/p1461/p1462)
● I: Integral time velocity controller (p1463)
● D: Derivative-action time velocity controller (p1465/p1466/p1467)