Maximum Frequency; Upper Limit And Lower Limit Frequencies - Toshiba TOSVERT VF-AS1 Instruction Manual

5.9

Maximum frequency

 : Maximum frequency
• Function
1) Programs the range of frequencies output by the inverter (maximum output values).
2) This frequency is used as the reference for acceleration/deceleration time.
Output frequency [Hz]
80Hz
60Hz
0
If  is increased, adjust the upper limit frequency  as necessary.
[Parameter setting]
Title
 Maximum frequency
Note: The output frequency is limited to a frequency 10.5 times as high as the base frequency (). Even if the
maximum frequency () or the upper limit frequency () is set above this frequency, this limitation is
imposed on the output frequency.
5.10

Upper limit and lower limit frequencies

 : Upper limit frequency
: Lower limit frequency

• Function
Programs the lower limit frequency that determines the lower limit of the output frequency and the upper limit
frequency that determines the upper limit of that frequency.
Output frequency [Hz]


[Parameter setting]
Title
Upper limit frequency

 Lower limit frequency
Function
Upper limit
frequency
Frequency
0 100%
setting signal
Frequencies that go higher
than  will not be output.
Function Adjustment range
~ Hz
~ Hz
E-17
In case of =80Hz
• This function determines the
maximum value in line with the
ratings of the motor and load.
In case of =60Hz
• Maximum frequency cannot be
adjusted during operation. To
adjust, first stop the inverter.
100% Frequency setting signal [%]
Adjustment range
~ Hz
Output frequency [Hz]


0
The output frequency cannot
be set at less than  .
E6581445
Default setting

Lower limit
frequency
Frequency
100%
setting signal
Default setting


5