Lenze 8400 TopLine - Manual (Page 217)

Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
217
5 Motor control (MCTRL)
5.8 Sensorless control for synchronous motors (SLPSM)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
5.8.4 Optimising the control mode
The "optimisation steps" given in the table below serve to further optimise the control behaviour of
the sensorless control for synchronous motors and adjust it to the concrete application.
• Detailed information on the individual steps can be found in the following subchapters.
Generally, the following optimisation steps are recommended:

Note!
From version 12.00.00:
• Following successful motor parameter identification, the current controller
parameters ( C00075 , C00076 ) are calculated automatically.
• If these parameters are not to be calculated, bit 4 of C02865/1 must be set to "1".
• Following successful motor parameter identification, the speed controller parameters
( C00070/3 , C00071/3 ) can be calculated automatically.
• If these parameters are to be calculated, bit 6 of C02865/1 must be set to "5".
• Following successful motor parameter identification, other controller parameters
( C00011 , C00022 ) can be calculated automatically.
• If these parameters are to be calculated, bit 6 of C02865/1 must be set to "6".
Optimisation steps
1. Optimise current controller . ( 218)
• The current controller should always be optimised if a motor of a third-party manufacturer with
unknown motor data is used!
2. Optimise speed controller . ( 219)
• The setting of the speed controller must be adapted depending on the mechanical path.
3. Optimise response to setpoint changes and determine mass inertia . ( 222)
• For an optimal reference behaviour, the total moment of inertia can be used to make a feedforward
control of the speed setpoint.

Note!
Current setpoint filter (band-stop filter) / jerk limitation
The use of the functions is only recommended in exceptional cases.
The functions are described in chapter "
Servo control (SC) ":
 Setting the current setpoint filter (band-stop filter) ( 244)
 Adapting the max. acceleration change (jerk limitation) ( 245)