Basic Operation - Omron SYSDRIVE 3G3JV User Manual

Basic Operation

Note 2. With 400-V Inverters, the values for the upper limit of setting ranges and the default settings
will be twice those given in the above table.
Output voltage
(V)
• Set the rated motor input frequency to the maximum voltage frequency (FMAX) while the rated motor
input voltage is set to the maximum output voltage (VMAX).
• The vertical-axis load or the load with high viscous friction may require high torque at low speed. If the
torque is insufficient at low speed, increase the voltage in the low-speed range by 1 V, provided that no
overload (OL1 or OL2) is detected. If an overload is detected, decrease the set values or consider the
use of an Inverter model with a higher capacity.
• The required torque of fan or pump control increases in proportion to the square of the speed. By set-
ting a quadratic V/f pattern to increase the voltage in the low-speed range, the power consumption of
the system will increase.
Note 1. Set the parameters so that the fol-
lowing condition will be satisfied.
n14 x n12 < n11 x n09
Note 2. The value set in n13 will be ignored if
parameters n14 and n12 are the
same in value.
Frequency (Hz)
Chapter 5
5-5