Fuji Electric FRENIC-HVAC User Manual page 360

F03 Maximum Frequency 1
F03 specifies the maximum frequency to limit the output frequency. Specifying the
maximum frequency exceeding the rating of the equipment driven by the inverter may cause
damage or a dangerous situation. Make sure that the maximum frequency setting matches the
equipment rating.
- Data setting range: 25.0 to 120.0 (Hz)
The inverter can easily accept high-speed operation settings. When changing the speed setting,
carefully check the specifications of motors or equipment beforehand.
Otherwise injuries could occur.
Modifying F03 data to allow a higher output frequency requires also changing F15
data specifying a frequency limiter (high).
F04, F05 Base Frequency 1, Rated Voltage at Base Frequency 1, Maximum Output
F06 Voltage 1
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 through H53, these function codes may profile the non-linear V/f pattern suitable
for the load by specifying increase or decrease in voltage at any point on the V/f pattern.
The following descriptions include setups required for the non-linear V/f patterns.
At high frequencies, the motor impedance may increase, resulting in an insufficient output
voltage and a decrease in output torque. To prevent this problem, use F06 (Maximum Output
Voltage 1) to increase the voltage. Note, however, that the inverter cannot output voltage
exceeding its input power voltage.
V/f point
Maximum frequency
Base frequency
Non-linear V/f pattern 2
Non-linear V/f pattern 1
Normal (linear) V/f pattern

H50, H51 (Non-linear V/f Pattern 1, Frequency and Voltage)
H52, H53 (Non-linear V/f Pattern 2, Frequency and Voltage)
Function code
Frequency Voltage
The setting of the maximum output voltage
F03 F06 is disabled when the auto torque boost or
torque vector control is selected.
F04 F05
H52 H53
Disabled when the auto torque boost or
torque vector control is selected.
H50 H51
6-50
Remarks