Temperature Adjustment - BONFIGLIOLI ACTIVE Cube ACU 201-01 Operating Instructions Manual

18.7.2 Temperature Adjustment

The field-orientated 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
227 is calculated from the inductivity of the rotor circuit and the rotor re-
stant
sistance. 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
can select different methods and actual value sources for temperature measurement.
Operation mode
0 - Off
1 - Temp. meas. on MFI1A
4 - Temp. Meas. at 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. The
input MFI1 must be selected accordingly.
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 by BONFIGLIO-
LI VECTRON 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 pa-
rameter
sistance as a function of 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 aforemen-
tioned temperature coefficient and the parameter
adjustment temperature enables an additional optimization of the rotor time constant
alongside the parameter
No.
466 Temperature coefficient
467 Adjusting temperature
252
Operation mode
465
Temperature coefficient
Rated slip correction factor
Parameter
Description
0.00%/100 °C
Operating Instructions ACU
465 for the temperature adjustment, you
Function
The function is deactivated.
Temperature synchronization
°
(0 ... 200 C => 0 ... 10 V / 0 ... 20 mA),
actual temperature value at multifunctional input 1
Determination of temperature by frequency invert-
er 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)
Operation mode
466. This value defines the change of the rotor re-
Temperature adjustment
718.
Settings
Min. Max.
300.00%/100 °C
-50 °C 300 °C
Current rotor time con-
452 of multifunction
467. The
Fact. sett.
39.00%/100 °C
35 °C
06/13