Operating Instructions ACU
11 Machine data
The input of the machine data is the foundation for the functionality of the control functions and
methods. In the course of the guided commissioning, the necessary parameters are queried
according to the selected Configuration 30.
11.1 Rated motor parameters
Configure the rated motor parameters according to the rating plate of the motor or the motor data
sheet. The default settings of the machine parameters are based on the nominal data of the
frequency inverter and a four-pole asynchronous motor. The machine data required for the control
functions and methods are checked for plausibility and calculated in the course of the
commissioning.
Check the default ratings.
U
FIN
= Rated frequency inverter voltage, typically 400 V or 230 V
I
FIN
= Rated frequency inverter output current
P
FIN
= Rated frequency inverter power
o: Overload capacity of frequency inverter.
Parameter Rated Cosinus (
) 374 is not available in Configurations 5xx and 6xx
(synchronous motor).
In the case of asynchronous machines, the speed can be increased at a constant torque if the motor
winding can be switched over from star to delta connection. The change-over leads to a modification
of the dependent rated figures by a square root of three.
The rated data of the motor are to be entered according to the specifications on the
rating plate for the motor connection type used (star or delta connection).If the data
entered deviate from the rating plate, the parameters will not be identified correctly.
Parameterize the rated data according to the rating plate of the motor for the wiring of
the motor winding. Consider the increased rated current of the connected three-phase
motor.
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