Details about Function Parameters
75
efficiency. Refer to the following figures for linear V/F curves and V/F curves (torque lowering):
0
1
2
3
4
5
6
2:1.2
3:1.5
1:1.0
4:1.7
5:2.0
6:3.0
Voltage
Basic frequency; Max. output voltage
th power
th power
th power
th power
th power
th power
Frequency
F2-01
Torque Elevation Options
Factory
Setting
s
1
Modification
×
Setting
Range
0: Inapplicable
2: Auto torque elevation only
1: Manual torque elevation only
3: Manual torque ele auto torque elevation
F2-02
Amplitude of Manual Torque
Elevation
Factory
Setting
s
Depend
on
inverter
model
No.
Modification
○
Setting
Range
15kW inverters and below: 0.0
~
15.0
%,
18.5kW inverters and above:
0.0
~
10.0
%
F2-13 “max. output voltage” is taken as 100%
F2-03
Cut-Off Point of Manual Torque
Elevation
Factory
Setting
s
10.0
%
Modification
○
Setting
Range
0.0
~
100.0
%
; F2-12 “Basic frequency” is taken as 100
%
F2-04
Auto Torque Elevation Range
Factory
Setting
s
100.0
%
Modification
×
Setting
Range
0.0
~
100.0
%
Manual torque elevation can improve the low-speed torque and startup torque of the motor. Tune
up F2-02 “Amplitude of Manual Torque Elevation” until the startup requirements are met. The
amplitude value must not be too great, otherwise there will be motor overheating or overcurrent.
The relation curve of output voltage (V) and frequency (F) consists of a setup V/F curve, manual
torque elevation and auto torque elevation. Please refer to the following figure for the relation
between F2-03 “Cut-off point of auto torque elevation”, F2-12 “Basic frequency” and F2-13
“max. output voltage”:
Auto torque elevation can change the voltage real-time according to the load current intensity,
compensate the voltage loss of the stator impedance, automatically adapt to different loads and