Omron SYSDRIVE 3G3MV User Manual page 108

Basic Operation
·Set the rated motor frequency as the maximum voltage frequency, and set the rated
motor voltage as the maximum voltage.
·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 setting a quadratic V/f pattern to increase the voltage in the low-speed
range, the power consumption of the system will increase.
Chapter 5
5-9