Function Generator - Siemens SINUMERIK 840D sl Commissioning Manual

● Settling time
This value represents the delay between measured data recording / test setpoint output and
the injection of the offset.
● Rise time
The position setpoint is specified with the "Setpoint ramp" basic setting according to the
selected ramp duration.
● Offset
The step is stimulated from standstill or starting from the constant traverse speed set in this
parameter. If an offset value other than zero is input, the test excitation takes place during
the traverse. For the sake of clarity, the displayed position actual value does not include this
constant component.
10.5.6

Function generator

Function description
The function generator can be used, for example, to perform the following tasks:
● Measuring and optimizing closed-loop control circuits
● Comparing the dynamic properties of coupled drives
● Specifying a straightforward traversing profile without traversing program
The function generator can be used to generate various signal forms.
In the Servo mode, the setpoint can additionally be supplied into the control structure in
accordance with the currently selected mode, for example, as a current setpoint, disturbing
torque or speed setpoint. Any influence of overlaid closed-loop control circuits is suppressed
automatically.
Position of the application points:
Figure 10-7
CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA
Application points
10.5 Measuring functions (manual tuning)
Drive tuning
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