5 Motor control (MCTRL)
5.8 Sensorless control for synchronous motors (SLPSM)
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Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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5.8.1 Parameterisation dialog/signal flow
Proceed as follows to open the dialog for parameterising the motor control:
1. »Engineer« Go to the Project view and select the 8400 HighLine inverter.
2. Select the Application parameters tab from the Workspace.
3. Select the motor control "3: SLPSM: Sensorless PSM" from the Overview dialog level in the
Motor control list field:
4. Click the Motor control servo SLPSM button to change to the Overview Motor control
vector dialog box.
• This dialog level only shows a simplified signal flow with the most important
parameters.
• When you click the >>More details button in the left-most position, a signal flow with
more details/parameters is displayed.
Note!
In the open-loop controlled operation for synchronous motors, usually less maximum
torque is created than in the closed-loop controlled operation. Thus, the dynamics of this
control is limited and a high acceleration of the drive is not possible in this control mode.
From version V17.00.00 onwards, the bSlpsmSpeedopenLoopControl process output is
available at SB LS_DeviceMonitor
(open-loop controlled operation of the SLPM is active).
This signal can be connected to the additional ramp L_Nset.bTix to realise an own ramp in
the open-loop controlled operation. This serves to set a flat ramp for the open-loop
controlled operation and a steep ramp for the closed-loop controlled operation and thus
achieve a considerably higher acceleration of the entire drive. Moreover, less vibrations are
caused.
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