IACDRIVE I5300 Series, User Manual, Page: 157 / 272

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F unction Code Parameter Name Setting Range Default
P 3-01 Torque boost 0.0%–30%
Model
dependent
P 3-02
Cut-off frequency of
torque boost
0.00 Hz to maximum output
frequency
50.00 Hz
To compensate the low frequency torque characteristics of V/F control, you can boost the
output voltage of the AC drive at low frequency by modifying P3-01.
If the torque boost is set to too large, the motor may overheat, and the AC drive may suffer
overcurrent.
If the load is large and the motor startup torque is insuffcient, increase the value of P3-01.
If the load is small, decrease the value of P3-01. If it is set to 0.0, the AC drive performs
automatic torque boost. In this case, the AC drive automatically calculates the torque boost
value based on motor parameters including the stator resistance.
P3-02 specifies the frequency under which torque boost is valid. Torque boost becomes
invalid when this frequency is exceeded, as shown in the following figure.
Figure 6-4 Manual torque boost
Output
frequency
Output
voltage
Vb
fb f1
V1
f1: Cutoff frequency of
manual torque boost
fb: Rated running
frequency
Vb: Maximum
output voltage
V1: Voltage of
manual torque boost
F unction Code Parameter Name Setting Range Default
P 3-03 Multi-point V/ F frequency 1 ( F 1) 0.00 Hz to P 3-05 0.00 Hz
P 3-04 Multi-point V/ F voltage 1 (V1) 0.0%–100.0% 0.0%
P 3-05 Multi-point V/ F frequency 2 ( F 2) P 3-03 to P 3-07 0.00 Hz
P 3-06 Multi-point V/ F voltage 2 (V2) 0.0%–100.0% 0.0%
P 3-07 Multi-point V/ F frequency 3 ( F 3)
P 3-05 to rated motor
frequency ( P 1-04)
Note: The rated frequencies
of motors 2, 3, and 4 are
respectively set in A2-04, A3-
04, and A4-04.
0.00 Hz
P 3-08 Multi-point V/ F voltage 3 (V3) 0.0%–100.0% 0.0%
I5300 User Manual Description of Function Codes