5-8
n015
Middle Output Frequency Voltage
(VC)
Register 010F Hex Changes during
operation
No
Setting
range
0.1 to 255.0 [0.1 to 510.0] (V) Unit of
setting
0.1 V Default setting 12.0
[24.0]
(See
note 2.)
n016
Minimum Output Frequency
(FMIN)
Register 0110 Hex Changes during
operation
No
Setting
range
0.1 to 10.0 (Hz) Unit of
setting
0.1 Hz Default setting 1.5
n017
Minimum Output Frequency
Voltage (VMIN)
Register 0111 Hex Changes during
operation
No
Setting
range
0.1 to 50.0 [0.1 to 100.0] (V) Unit of
setting
0.1 V Default setting 12.0
[24.0]
(See
note 2.)
Note 1. [ ] values indicate those for 400-V-class Inverters.
Note 2. For 5.5- and 7.5-kW Inverters, this value is set to 10.0 V for 200-V-class models and to 20.0 V
for 400-V-class models.
Output voltage
(V)
Note 1. Set the parameters so that the fol-
lowing condition will be satisfied.
n016 x n014 < n013 x n011
Note 2. The value set in n015 will be ignored
if parameters n016 and n014 are the
same in value.
Frequency (Hz)
n012 (VMAX)
n015 (VC)
n017 (VMIN)
n016
(FMIN)
n014
(FB)
n013
(FA)
n011
(FMAX)
• 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 set-
ting a quadratic V/f pattern to increase the voltage in the low-speed range, the power consumption of
the system will increase.
Basic Operation
Chapter 5
To Next Page
Loading...
