SKS Sweden Bonfiglioli Vectron ACTIVE CUBE ACU 201 Series, Руководство по эксплуатации, Страница: 224 / 260

222
Operating Instructions ACU
09/08
The parameter
Trigger threshold
507 is to be set in such a way that it is between
the maximum DC link voltage which the mains can generate and the maximum ad-
missible DC link voltage of the frequency inverter.
max dMC Netz
Ud U 2 1,1 U < < ⋅ ⋅
If the parameter
Trigger threshold
507
is set larger than the maximum admissible
DC link voltage, the motor chopper cannot become active, the motor chopper is
switched off.
If the set
Trigger threshold
507 is smaller than the maximum DC link voltage the
mains can generate, error message F0706 (chapter "Error Messages") is displayed
when the frequency inverter is switched on.
17.7.2 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 resis-
tance. 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 suita-
ble 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 inver-
ter 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 eva-
luates 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 BONFIGLI-
OLI 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.
Operating Instructions ACU 09/08 222