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This is a function for motor 1. The following can be
selected:
-- Selection of load characteristics such as automatic
torque boost, square law reduction torque load,
proportional torque load, constant torque load.
-- Enhancement of torque (V/f characteristics), which is
lowered during low-speed operation. Insufficient
magnetic flux of the motor due to a voltage drop in the
low-frequency range can be compensated.
Setting range
Characteristics selected
0.0
Automatic torque boost characteristic
where the torque boost value of a constant
torque load (a linear change) is
automatically adjusted.
The motor tuning (P04 / A13) should be set
to "2" for this function is valid.
0.1 to 0.9
Square law reduction torque for fan and
pump loads.
1.0 to 1.9
Proportional torque for middle class loads
between square law reduction torque and
constant torque (linear change)
2.0 to 20.0 Constant torque (linear change)
Torque characteristics(30HP or less)
<Square law reduction torque> <Proportional torque>
100%
Output frequency f
#0.1
#0.9
0
17%
Rated voltage 1
Output voltage V
17%
Output frequency f
100%
Base
frequency 1
#1.0
#1.9
0
Output voltage V
Rated voltage 1
Base
frequency 1
<Constant torque>
100%
Output frequency f
Base
frequency 1
#2.0
#20.0
0
23%
Rated voltage 1
Output voltage V
Torque characteristics(40HP or above)
<Square law reduction torque> <Proportional torque>
100%
Output frequency f
#0.1
#0.9
0
18%
Rated voltage 1
Output voltage V
18%
Output frequency f
100%
Base
frequency 1
#1.0
#1.9
0
Output voltage V
Rated voltage 1
Base
frequency 1
<Constant torque>
100%
Output frequency f
Base
frequency 1
#2.0
#20.0
0
10%
Rated voltage 1
Output voltage V
Note: As a large torque boost value creates overexcitation
in the low-speed range, continued operation may cause
the motor to overheating. Check the characteristics of the
driven motor.
The electronic thermal O/L relay manages the output
frequency, output current, and operation time of the
inverter to prevent the motor from overheating when
150% of the set current value flows for the time set by
F12 (thermal time constant).
This is a function for motor 1.
This function specifies whether to operate the
electronic thermal O/L relay and selects the target
motor. When a general-purpose motor is selected,
the operation level is lowered in the low speed range
according to the cooling characteristics of the motor.
Set value 0: Inactive
1: Active (for general-purpose motor)
2: Active (for inverter motor)
This function sets the operation level (current value) of
the electronic thermal. Enter a value from 1 to 1.1
times the current rating value of the motor.
The set value "2" is set for the inverter motor because
there is no cooling effect decrease by the rotational
speed.
The setting range is 20 to 135% of the rated current of the
inverter.
Output frequency f
0
(Hz)
Operation level current (%)
85
54
Fe x 0.33
Fe x 0.83
fe
0.2 to 22kW
30 to 45kW
90
95
100
69
When F10 = 2
(%)
(
When F10 = 1
)
(When F10 = 1)
Operation level current and output frequency
fe= fb (fb
<
60Hz)
60Hz (fb
≥
60Hz)
fb:
Base frequency
F10
Electric thermal O/L relay (Thermal time constant)
Electric thermal O/L relay (level)
Electric thermal O/L relay ( select)
F11
F12
F09 Torque boost 1
F 1 0 E L C T R N O L 1
F 1 1 O L L E V E L 1
F 0 9 T R Q B O O S T 1
0.25 to 30HP
(When F10 = 1)
40 to 60HP
(When F10 = 1)