66
z
The factory setting for the maximum output frequency is 50Hz.
When changing the maximum output frequency, set the frequency range (V/F
pattern) (parameter P03) to FF, and then change the max. output frequency
setting (parameter P15).
[Example to change maximum output frequency from 50Hz to 100Hz]
∗
If the frequency range is "50" or "60", the max. output frequency and base frequency will be
fixed.
∗
When the frequency range is FF", the frequency range will be determined according to
the max. output frequency and base frequency.
Note 1)
A frequency exceeding the upper frequency clamp (parameter P54) cannot be
output.
Note 2)
If a general-purpose motor with a rated frequency of 50 or 60Hz is run at a
frequency exceeding the rated frequency, the motor may be damaged. Always set
the frequency to match the motor characteristics.
Note 3)
If the base frequency must be changed together with the max. output frequency
for a high-speed exclusive motor, etc., change parameter P16 with the procedure
given above.
Note 4)
When running a general-purpose motor with a frequency higher than the
commercial frequency, the base frequency will be set to the normal motor's rated
output frequency (50 or 60Hz).
Note 5)
When using the general-purpose motor at a level higher than the base frequency
(normally 50 or 60Hz), the motor will enter the rated output characteristics, and the
generated torque will drop in inverse proportion to the frequency.
Changing and Setting the Maximum
Output Frequency
Out
put
vol
tage (%
)
Out
put
vol
tage (%
)
Max. output frequency (P15=100)
Base frequency (P16=50)
Frequency
(Hz)
0
100
50
100
Frequency
(Hz)
0
100
50
(1)
Change frequency range to FF
(Change parameter P03 to FF)
(2)
Change max. output frequency
to 100Hz
(Change parameter P15 to 100)
