Yaskawa FSP Amplifier FlexWorks - Manual (Page 56)

Operating the FSP Amplifier Using FlexWorks
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4.8. Mechanical Analysis
Controlling a system (amplifier, motor, and load) requires
knowledge of its mechanical restrictions, such as resonance and
anti-resonance frequencies.
The mechanical analysis (FFT) option samples and analyzes 2000
speed data points. The speed is a response to sinusoidal torque
frequency commands. The response is displayed as a graph of the
gain (dB) and phase angle (degree) versus frequency (Hz in log
scale). According to the graph, the relevant parameters can then be
adjusted in order to reduce
the effect of the mechanical restrictions.
N OTE :
The process uses the predefined parameters of Notch Filter
(Pn408.0, Pn409, Pn40A) and does not take control gains into
consideration.
To start mechanical analysis:
1. Click FFT or select Mechanical Analysis from the Tools
menu.
A Warning message is displayed (Figure 29).
Figure 29: Mechanical Analysis Warning Message
2. Click OK to open the Mechanical Analysis window (Figure
30).