10
03/2006
10.4 Frequency response measurement
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© Siemens AG 2006 All Rights Reserved
SINUMERIK 840D/810D Start-Up Guide (IADC) – 03/2006 Edition
Bandwidth
Analyzed frequency range
S 4.0 kHz for 840D, double axis modules (scanning frequency 16.0 kHz).
S 8.0 kHz for 840D (scanning frequency 16.0 kHz).
Averaging
This value increases both the accuracy of the measurement and the measuring
duration. A value of 20 is normally suitable.
Settling time
Recording of the measured data starts after a delay equal to the set settling
time after activation of the test setpoint. A value of approximately 10 ms is
recommended.
The measuring parameters and measurement results (diagrams) can be loaded
or saved using the File functions soft key.
10.4.2 Scanning the speed control loop
The behavior when transferring to the motor measuring system is always
analyzed. Various lists of measuring parameters are offered depending on
which basic setting is selected for the measurement.
The traversing range monitoring function is set and the enabling logic (external/
internal) selected in the main screen.
1. Setting the traveling range monitoring and the enabling logic on the
main screen. One of four different types of measurement can be selected:
S Reference frequency response
S Interference frequency response
S Setpoint step change
S Disturbance step change
2. Setting the necessary parameters on the measuring parameters screen
3. Displaying the measurement result on screen using the Display soft key
Additional
information
Functionality
Procedure
10 Drive O
timization
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