Lenze 8400 motec - Manual (Page 134)

5 Motor control (MCTRL)
5.9 Sensorless control for synchronous motors (SLPSM)
134 Lenze · 8400 motec · Reference manual · DMS 4.1 EN · 08/2013 · TD05
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
Tip!
Information on the optimisation of the control mode and the adaptation to the real
application is provided in the " Optimising the control mode " chapter.
Parameterisable additional functions are described correspondingly in the chapter
" Parameterisable additional functions ". ( 145)
5.9.4 Optimising the control mode
The measures described in the following subchapters serve to further optimise the control
behaviour of the sensorless control for synchronous motors and adjust it to the concrete
application.
• Optimise current controller . ( 135)
• The current controller should always be optimised if a motor of a third-party manufacturer
with unknown motor data is used!
• Optimise speed controller . ( 135)
• The setting of the speed controller must be adapted depending on the mechanical path.
• Current-dependent stator leakage inductance Ppp(I) ( 139)
• If the motor in the process is operated with very low as well as very high currents (e.g. in
Pick and place applications), the stator leakage inductance and the current controller
parameters can be tracked by means of an adjustable saturation characteristic.