Savch S3100E Series, Руководство пользователя

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03-01 Torque boost

Factory setting
Type setting
Setting range
0.0%:( auto-torque boost)
0.1%
～
30.0%
03-02
Cut-off frequency of torque boost Factory setting
50.00Hz
Setting range 0.00Hz
～
max frequency
Torque boosting can improve the low-frequency torque characteristics of V/f and do boost compensation for the
output voltage. However, if the torque boost setting is too large, the motor is easily overheated and the inverter is
easily overcurrent.
When the torque boost is set to 0.0, the inverter is in automatic torque boost, and the inverter automatically
calculates the torque boost value according to the motor stator resistance and other parameters.
Torque boost torque cut-off frequency: Below this frequency, the torque boost is valid, and beyond this set
frequency, the torque boost is invalid, as shown in Figure 5-3.
Output
voltage
Output
frequency
fb
Vb
V1
f1
V1: Manual torque boost voltage
Vb: Maximum output voltage
f1: Cut-off frequency of manual torque boost
fb: Rated running frequency
Figure 5-3 Schematic diagram of manual torque boost
03-03
Multi-point V/f frequency point 1
Factory setting
0.00Hz
Setting range 0.00Hz
～
03-05
03-04 Multi-point V/f voltage point 1
Factory setting
0.0%
Setting range 0.0%
～
100.0%
03-05 Multi-point V/f frequency point 2
Factory setting
0.00Hz
Setting range 03-03
～
03-07
03-06
Multi-point V/f voltage point 2
Factory setting
0.0%
Setting range 0.0%
～
100.0%
03-07 Multi-point V/f frequency point 3
Factory setting
0.00Hz
Setting range 03-05
～
motor rated frequency(01-03)
03-08 Multi-point V/f voltage point 3
Factory setting
0.0%
Setting range 0.0%
～
100.0%
Parameters 03-03
～
03-08 can define multi-segment V/f curve.
The curve of the multi-point V/f should be set according to the load characteristics of the motor. Note that the
relationship between the three voltage points and the frequency point must meet: V1 <V2 <V3, F1 <F2 <F3.
Figure 5-4 is a schematic diagram of multi-point V/f curve setting.
If the voltage is set too high at low frequency, the motor may overheat or even burn, and the inverter may be
overcurrent stalled or overcurrent protected.