Parameter descriptions
U
FIN
= Nominal Frequency inverter voltage, usually 400 V or 230 V
I
FIN
= Nominal Frequency inverter output current
P
FIN
= Nominal Frequency inverter power
o
c
: Overload capacity of frequency inverter.
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 changeover 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 asynchronous
motor.
Input via operator panel
− The motor ratings must be entered when the "Setup" menu is selected on the operator panel.
− The motor ratings can be entered in menu "Para" for parameters 370 … 376.
7.2.2 Further motor parameters
In particular the field-orientated control requires the determination of further data which cannot be
read off the rating plate of the asynchronous or synchronous motor for the precise calculation of the
machine model. In the course of the guided commissioning (setup), the parameter identification is
carried out to measure the further motor parameters.
The values of the following parameters will not be measured by the frequency inverter during the
guided commissioning (setup). Changing the measured values is normally not required.
Rated voltage correction factor 368
Rated magnetising current 716
Rated slip correction factor 718
Voltage constant 383, if no input before
377 Stator resistance (asynchronous motor)
1190 Stator resistance (synchronous motor)
The resistance of the stator winding is measured during the guided commissioning. The measured
value is saved as a phase value in parameter
Stator resistance 377 and is 3 times smaller than the
winding resistance in delta connection.
By default, the stator resistance of a standard motor is entered to match the reference output of the
frequency inverter.
114
Operating Instructions
Agile
06/2013 Machine data
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