FujiFilm FRENIC5000G11S Series, Technical Information

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2-9
Chapter 2
3. Function Explanation
2
current value flows for the time set by F12 (thermal time
constant).
This function specifies whether to operate the electronic
thermal O/L relay and selects the target motor. When a
standard 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 standard 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 setting range is 20 to 135% of the rated current of the
inverter.
The time from when 150% of the operation level current flows
continuously to when the electronic thermal O/L relay activates
can be set.
- Setting range : 0.5 to 75.0 min (in 0.1 min steps)
■
F09 Torque boost 1
This is a motor 1 function. The following can be selected:
- Selection of load characteristics such as automatic torque
boost, variable 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.
Torque characteristics
NOTE:
As a large torque boost value creates over-excitation in the low-speed
range, continued operation may cause the motor to overheating.
Check the characteristics of the driven motor.
■
F10 Electronic thermal O/L relay for motor 1(Select)
■
F11 Electronic thermal O/L relay (Level)
■
F12 Electronic thermal O/L relay (Thermal time
constant)
The electronic thermal O/L relay manages the output fre-
quency, output current, and operation time of the inverter to
prevent the motor from overheating when 150% of the set
F09 TRQ BOOST1
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
0.1 to 0.9 Variable torque characteristics for fan and pump
loads
1.0 to 1.9 Proportional torque for middle class loads
between variable torque and constant torque
(linear change)
2.0 to 20.0 Constant torque (linear change)
F10 ELCTRN OL1
F11 OL LEVEL1
F12 TIME CNST 1
0
10%
100%
0
10%
#0.9
#0.1
#20.0
#2.0
#1.9
#1.0
100%
0
10%
100%
Variable torque Proportional torque
Output voltage V
Constant torque
Output voltage V
Output voltage V
Rated voltage 1
Rated voltage 1
Rated voltage 1
Base
frequency 1
Base
frequency 1
Base
frequency 1
Output frequency f
Output frequency f
Output frequency f
54
69
85
90
95
100
feX0.33
1/4 to 30HP
(When F10 = 1)
40 to 60HP
(When F10 = 1)
feX0.83 fe f
0
(Hz)
When F10 = 2
Operation
level current
(%)
Output frequency
Operation level current and output current
fb: Base frequency
fe = fb (fb < 60Hz)
60Hz (fb > 60Hz)
{
0
0
5
10
15
20
50 100 150 200
F12=10
F12=5
F12=0.5
Current-operation time characteristics example
Operation
time (min)
Changed by F12.
(Output current /operation level current) x 100 (%)
Chapter02J(P6˜25).p65
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