Tuning Of The Motor And The Speed Controller - Lenze i55AE125B Manual

Motor control
Optimisation of the control loops
Options for optimized motor tuning
8.4.1.2

Tuning of the motor and the speed controller

The following describes in general how to optimise the speed controller. This may be required
if some parameters have on the load side of the drive system have changed or have not been
set yet, such as:
Motor moment of inertia
•
Load moment of inertia
•
Type of coupling between moment of inertia of the motor and that of the load
•
Preconditions
All rated motor data are known and set in the inverter, either by selecting the motor from
•
the motor catalogue or manually.
4Motor selection from motor catalogue
4Manual setting of the motor data
All further options for optimisation have been executed before if possible.
•
4Automatic motor identification (energized)
4Automatic motor calibration (non-energized)
Optimisation is possible online or offline (with or without connected motor).
•
Required steps
Adapt the following parameters to your drive system using the engineering tool. Since this
only changes load-dependent data, the other parameter groups must not be calculated again.
Parameter Name / value range / [default setting]
0x2910:001 Motor moment of inertia
(P335.01) (Motor inertia)
0.00 ... [3.70]* ... 20000000.00 kg cm²
* Default setting depending on the size.
0x2910:002 Load moment of inertia
(P335.02) (Load inertia)
0.00 ... [3.70]* ... 20000000.00 kg cm²
* Default setting depending on the size.
0x2910:003 Coupling
0 Stiff
1 Elastic
2 With backlash
0x2904 Actual speed filter time
0.0 ... [2.0] ... 50.0 ms
For further details on the speed controller, see chapter
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Info
Setting of the moment of inertia of the motor.
Setting of the moment of inertia of the load.
• Always adjust the setting to the current load, otherwise the optimisa-
tion process cannot be executed successfully.
Selection of the type of coupling between the moment of inertia of the
motor and that of the load.
Filter time for the actual speed value.
"Speed controller".
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