Temperature Adjustment - BONFIGLIOLI ACTIVE CUBE 201 Operating Instructions Manual

19.7.2

Temperature Adjustment

The field-oriented control systems are based on the most precise calculation of the machine model
possible. The rotor time constant is an important machine variable for the calculation. The figure to
be read out via the parameter
the rotor circuit and the rotor resistance. The dependence of the rotor time constant on the motor
temperature can be taken into account in the case of particularly high precision requirements via a
suitable measurement. Via
different methods and actual value sources for temperature measurement.
Operation Mode 465
0 - off
1 - Temp. meas. on MFI1A
4 - Temp.meas. upon start
Vectron temp. meas. on
11 -
MFI1A
Operation mode 1 requires an external temperature measurement system which evaluates the
temperature sensor and maps the temperature range from 0...200 °C to an analog voltage or
current signal.
Operation Mode
Operation mode 4 is available in configurations 210, 211 and 230. When the signals Controller
release and Start clockwise or Start anticlockwise are present, the motor temperature and the rotor
time constant are synchronized by means of the measured winding resistance.
For Operation Mode 11, an optional temperature measurement board from Bonfiglioli Vectron MDS
GmbH is required. This board can be connected to the 20 V power supply on the frequency inverter.
This board converts the temperature to an analog voltage or current signal in a range from -26.0 °C
to 207.8 °C. The resistance of the measuring resistor KTY84/130 to be used is 1000 Ω at a
temperature of 100 °C.
The material used for the rotor winding of the motor is taken into account via the parameter
Temperature Coefficient
the temperature for a certain material of the rotor winding. Typical temperature coefficients are
39%/100 °C for copper and 36%/100 °C for aluminum at a temperature of 20°C.
The temperature characteristic within the software is calculated via the aforementioned temperature
coefficient and the parameter
additional optimization of the rotor time constant alongside the parameter
718.
Factor
Parameter
No. Description
466 Temperature coefficient
467 Adjusting temperature
The synchronization of the rotor time constant as a function of the winding temperature can be
adjusted. The default values should normally be sufficiently precise so that neither an adjustment of
the rotor time constants via the parameter
the temperature synchronization via the parameter
adjustment is necessary, please remember that the rotor time constant is calculated by the guided
commissioning via the machine data. The
temperature at which the optimization of the extended machine data was carried out. The
temperature can be read out via the actual value parameter
used in the optimization for the parameter.
246
Act. Rotor Time Constant
465 for the temperature adjustment, you can select
Operation Mode
The function is deactivated.
Temperature synchronization
°
(0 ... 200 C => 0 ... 10 V / 0 ... 20 mA),
actual temperature value at multifunction input 1
Determination of temperature by frequency inverter via
measurement of the winding resistance without external
temperature measurement
Temperature synchronization; act. temperature value across
analog multi-function input.
(-26.0 °C ... 207.8 °C => 0 ... 10 V / 0 ... 20 mA)
452 of multifunction input MFI1 must be selected accordingly.
466. This value defines the change of the rotor resistance as a function of
Adjusting Temperature
Min.
0.00%/100 °C
-50 °C
Rated Slip Correction Factor
Adjusting Temperature
Operating Instructions ACU
227 is calculated from the inductance of
Function
467. The adjustment temperature enables an
Setting
Max.
300.00%/100 °C
300 °C
Temperature Coefficient
467 is to be set to the
Winding Temperature
Rated Slip Correction
Factory setting
39.00%/100 °C
35 °C
718 nor an adjustment of
466 is necessary. If an
226 and can be
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