BONFIGLIOLI ACTIVE Cube ACU 401-15 User 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 Current rotor time con-
stant
227 is calculated from the inductivity of the rotor circuit and the rotor re-
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 Operation mode 465
for the temperature adjustment, you
can select different methods and actual value sources for temperature measurement.
Operation mode 465
Function
0 -
Off
The function is deactivated.
1 - Temp. meas. on MFI1A
Temperature synchronization
(0 ... 200
°
C => 0 ... 10 V / 0 … 20 mA),
actual temperature value at multifunctional input 1
4 - Temp. Meas. at Start
Determination of temperature by frequency invert-
er via measurement of the winding resistance
without external temperature measurement
11 -
Vectron temp. meas. on
MFI1A
Temperature synchronization; act. temperature
value across analog multi-function input.
(-26.0 °C … 207.8 °C => 0 ... 10 V / 0 … 20 mA)
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 Operation mode 452
of multifunction
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 Temperature coefficient 466. This value defines the change of the rotor re-
sistance as a function of the temperature for a certain material of the rotor winding.
Typical temperature coeffi
cients 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
Temperature adjustment 467
. The
adjustment temperature enables an additional optimization of the rotor time constant
alongside the parameter
Rated slip correction factor
718.
Parameter
Settings
No.
Description
Min.
Max.
Fact. sett.
466
Temperature coefficient
0.00%/100 °C
300.00%/100 °C
39.00%/100 °C
467
Adjusting temperature
-50 °C
300 °C
35 °C
252 Operating Instructions ACU 06/13

BONFIGLIOLI ACTIVE Cube ACU 401-15 Specifications

General

Brand	BONFIGLIOLI
Model	ACTIVE Cube ACU 401-15
Category	Inverter
Language	English