Siemens SINUMERIK 840D sl Commissioning Manual page 325

Predefined measuring procedure
The following measuring procedures are available for measuring the position control loop:
Process
Reference frequen‐
cy response
Setpoint step
Setpoint ramp (rec‐
ommended)
Mechanical fre‐
quency response
Disturbance fre‐
quency response
The mechanical frequency response represents the relationship between the motor measuring
*)
system and the direct measuring system, and is measured by the position controller. The selection is
only possible if a second encoder has been detected.
CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA
Curve form Excitation
point
PRBS Position set‐
point
Jump Position set‐
point
Ramp Position set‐
point
PRBS Speed setpoint Position actual
*)
PRBS Torque feed‐
forward control
10.5 Measuring functions (manual tuning)
Input signal Output signal
Position setpoint Position actual value
Position actual value en‐
coder 1
Position actual value en‐
coder 2
Position setpoint Position actual value
System deviation
Contour deviation
Speed actual value
Position actual value en‐
coder 1
Position actual value en‐
coder 2
Position setpoint Position actual value
System deviation
Contour deviation
Speed actual value
Position actual value en‐
coder 1
Position actual value en‐
coder 2
Position actual value en‐
value encoder 1 coder 1
Position actual Position actual value en‐
value encoder 2 coder 1
Torque feedfor‐ Position actual value
ward control (ex‐
System deviation
citation)
Contour deviation
Speed actual value
Position actual value en‐
coder 1
Position actual value en‐
coder 2
Drive tuning
325