Automatic Servo Tuning; Setting The Options For The Measurement Procedure - Siemens SINUMERIK 840D sl Commissioning Manual

10.3

Automatic servo tuning

Which functions are available?
The following options are available for automatically tuning an axis:
● Selection of an individual axis for tuning
● Selection of a strategy from many options
● Reconfiguration of measurement conditions
● Chart display and activity log for tuning process
● Display of the measured frequency responses (speed control system) and the calculated
frequency responses (open circuit, closed control loop)
● Checking and processing the tuning results for speed and position controller: The response
of the control loop is simulated on the basis of the frequency response and displayed in the
bode diagram.
● Accept or reject the results of the tuning
The function "Automatic servo tuning" is started in the operating area "Commissioning"
→ "Automatic servo tuning", and can be used for all servo and direct drives.
Interpolation axes
For axes which make up an interpolation group, additional tuning steps should be undertaken,
e.g.:
● Path interpolation (Page 307) with the automatic servo tuning.
● Circularity test (Page 334)
● Adjust servo gain factor.
● When using feedforward control, transfer equivalent time constants of the slowest axis
(highest value) in all interpolating axes.
10.3.1

Setting the options for the measurement procedure

Options in JOG mode
In the first step, press the "Options" softkey to set the general behavior for automatic servo
tuning.
For a predominantly automatic sequence in the JOG mode the following selection is
recommended, utilizing all automatic sequences and settings:
CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA
Drive tuning
10.3 Automatic servo tuning
293