Fuji Electric FRENIC-ECO, Instruction Manual

Page: 134 / 246

5-26
F04
F05
H50
H51
Base Frequency
Rated Voltage at Base Frequency
Non-linear V/f Pattern (Frequency)
Non-linear V/f Pattern (Voltage)
These function codes specify the base frequency and the voltage at the base frequency
essentially required for running the motor properly. If combined with the related function codes
H50 and H51, these function codes may profile the non-linear V/f pattern by specifying increase
or decrease in voltage at any point on the V/f pattern.
The following description includes setups required for the non-linear V/f pattern.
At high frequencies, the motor impedance may increase, resulting in an insufficient output voltage
and a decrease in output torque. This feature is used to increase the voltage at high frequencies
to prevent this problem from happening. Note, however, that you cannot increase the output
voltage beyond the voltage of the inverter’s input power.
Base Frequency (F04)
Set the rated frequency printed on the nameplate labeled on the motor.
Rated Voltage at Base Frequency (F05)
Set 0 or the rated voltage printed on the nameplate labeled on the motor.
- If 0 is set, the rated voltage at base frequency is determined by the power source of the inverter.
The output voltage will vary in line with any variance in input voltage.
- If the data is set to anything other than 0, the inverter automatically keeps the output voltage
constant in line with the setting. When any of the automatic torque boost settings, automatic
energy saving or slip compensation is active, the voltage settings should be equal to the rated
voltage of the motor.
Non-linear V/f Pattern for Frequency (H50)
Set the frequency component at an arbitrary point of the non-linear V/f pattern.
(Setting 0.0 to H50 disables the non-linear V/f pattern operation.)
Non-linear V/f Pattern for Voltage (H51)
Sets the voltage component at an arbitrary point of the non-linear V/f pattern.
If the rated voltage at base frequency (F05) is set to 0, settings of function codes H50
and H51 will be ignored.
If the auto torque boost (F37) is enabled, H50 and H51 will be ignored.
Factory settings:
For models of 25HP for 208V, 30HP for 460V or below the non-linear V/f is disabled
(H50 = 0, H51 = 0.)
For models of 30HP for 208V, 40HP for 460V or above it is enabled, that is, (H50 = 5
Hz, H51 = 20 V), for the 208 V, (H50 = 5 Hz, H51 = 40 V) for 460 V.
Rated input voltage
Function
code
Name
Rated
capacity
(HP)
208 V 460 V
F04 Base Frequency 7.5 to 100 50.0 Hz 50.0 Hz
F05 Rated Voltage
at Base Frequency
7.5 to 100 208 V 460 V
40 or below 0 Hz 0 Hz H50 Non-linear V/f Pattern
(Frequency)
50 or above 5.0 Hz 5.0 Hz
40 or below 0 Hz 0 Hz H51 Non-linear V/f Pattern
(Voltage)
50 or above 20 V 40 V