Siemens SINAMICS PERFECT HARMONY GH180, Function Manual

Page: 223 / 538

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Figure 7-26 Critical Speed (Resonance) Avoidance
Parameters for Critical Speed Avoidance
Refer to the Critical Frequency Menu (2340) in Section Options for Drive Menu (2) of
Chapter Parameter Assignment / Addressing for parameters associated with this function.
7.11.6 Polarity Control
Polarity control is an inverter. The output of the polarity block is the opposite polarity of the
input. The selection of this feature is based solely on the SOP logic.
7.11.7 Speed Ramp
The speed ramp is a functional block that takes an input demand and generates an output with
a controlled rate of change, based on the acceleration and deceleration limits established by the
end user. Provisions are included for multiple sets of acceleration and deceleration settings. The
control provides a means to use any one of three separate menu-defined acceleration/
deceleration sets, or PLC network control as selected by the SOP.
Operating the Control
7.11 Command Generator
Control Manual
Operating Manual, A5E50491925A
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