Tuning of the motor and the speed controller

The following describes in general how to optimize the speed controller. This may be required if some parameters 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 motor moment of inertia and load moment of inertia

Preconditions

–

All rated motor data is known and set in the inverter, either by selecting the motor from the motor catalog or manually.

Select motor from motor catalog

Manual setting of the motor data

–

All further options for optimization have been executed before if possible.

Automatic motor identification (energized)

Automatic motor calibration (non-energized)

–

Optimization 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 do not need to be calculated again.

In the engineering tool, the speed control settings can be confirmed via the Initialise button.

This function is not available via the keypad.

Parameter

Address	Name / setting range / [default setting]		Information
0x2910:001 (P335.01)	Inertia settings: Motor moment of inertia (Moment of inert.: Motor inertia) 0.00 ... [3.70]* ... 20000000.00 kg cm² * Default setting dependent on the model.		Setting of the moment of inertia of the motor, relating to the motor.
0x2910:002 (P335.02)	Inertia settings: Scaled load inertia (Moment of inert.: Scal load inert.) 0.00 ... [0.00] ... 20000000.00 kg cm²		Setting of the moment of inertia of the load. – Always adjust the setting to the current load, otherwise the optimisation process for the speed controller cannot be executed successfully.
0x2910:003	Inertia settings: Coupling		Selection of the type of coupling between the moment of inertia of the motor and that of the load.
	0	Stiff
	1	Elastic
	2	With backlash

For further details on the speed controller, see chapter "Speed controller".