Siemens SINAMICS S120 - Page 126

Commissioning
4.19 Commissioning functions
Hydraulic Drive
126 System Manual, 04/2015, 6SL3097-4BA00-0BP1
Measurement of velocity control loop
Table 4- 3 Measurement types and measured variables for the velocity control loop measurement
Measurement
Excitation
Measured variables
Reference frequency re-
sponse
Velocity setpoint in velocity controller cycle,
valve control loop closed,
velocity control loop closed
Actual velocity value/
velocity setpoint
Setpoint step change Velocity setpoint in velocity controller cycle,
valve control loop closed,
velocity control loop closed
Measured variable 1:
• Velocity setpoint
• Valve spool setpoint
Measured variable 2:
• Velocity actual value
Disturbance frequency re-
sponse
Valve spool setpoint in velocity controller cycle,
valve control loop closed,
velocity control loop closed
Actual velocity value/
valve spool setpoint
Disturbance step Valve spool setpoint in velocity controller cycle,
valve control loop closed,
velocity control loop closed
Measured variable 1:
• Valve spool setpoint
Measured variable 2:
• Velocity actual value
Velocity controlled system Valve spool setpoint in velocity controller cycle,
valve control loop closed,
velocity control loop closed
Actual velocity value/
valve spool actual value
Velocity controlled system +
controller
Velocity setpoint in velocity controller cycle,
valve control loop closed,
velocity control loop closed
Actual velocity value/
control deviation
Table 4- 4 Parameterization for measuring the velocity control loop
Parameters
Physical unit
Reference frequency response
Amplitude (linear axis)
mm/min | inch/min
Bandwidth
Hz
Averaging operations
-
Settling time
ms
Offset (linear axis)
mm/min | inch/min
Setpoint step change
Amplitude (linear axis)
mm/min | inch/min
Measurement time ms
Settling time
ms
Offset (linear axis)
mm/min | inch/min
Disturbance step
Amplitude
V
Measurement time
ms
Settling time
ms