Maximum frequency
Set the maximum frequency value of the inverter.
This set value is the maximum frequency that the inverter will
achieve when it receives top speed reference from the control
terminals or the digital operator.
To the change the
ST
nd
rd
1 /2 /3 maximum frequency, set an intelligent input terminal to 08(SET)/17(SET3)
and switch the input ON.
The inverter output voltage from the base frequency to the maximum frequency is the same level as
the voltage selected on the motor voltage selection
Relation code
Relation code
A004/A204/A304:
ST
nd
rd
1 /2 /3
maximum frequency
b083 : Carrier frequency
5.5
7.5
11
15
18.5
22
30
37
45
55
75
90
110
132
Kw
Kw
Kw
Kw
Kw
Kw
Kw
Kw
Kw
Kw
Kw
Kw
Kw
Kw
160Kw
Voltage class
contents
12
12
12
12
12
8
5
5
10
7
6
100%
100%
100%
100%
95%(below 60.8A)
80%(below 60.8A)
65%(below 61.8A)
80%(below 96.8A)
90%(below 130.5A)
70%(below 127.4A)
70%(below 154A)
200V class
Maximum
carrier
frequency
Maximum
carrier
frequency
Derating on carrier
frequency=12kHz
Derating on carrier
frequency=12kHz
(10kHz 90kW to 1600kw
400V class
12
12
12
12
12
12
6
10
10
10
6
8
6
6
3
100%
100%
100%
100%
100%
100%
80%(below 38.4A)
75%(below 43.5A)
95%(below 71.2A)
80%(below 72A)
60%(below 66A)
95%(below 141.5A)
80%(below 140.8A)
70%(below 151.9A)
60%(below 156A)
(100%)
output voltage
Motor voltage
selection
Base frequency
output frequency(Hz)
Function
code
Function code
Limit of
setting
Limit of setting
Contents
Contents
A004/A204/
A304
30. - 400.
Unit ; Hz
Unit : kHz 5.5 to 75kW
Unit : kHz 90 to 160kW
Carrier frequency
The carrier frequency of the PWM wave-from output from the inverter is
adjustable changing b083.
If the carrier frequency is set higher, the audible noise from motor will be
reduced but the RF1 noise and the leakage current may be increased.
This function may help to avoid the resonant frequency of the motor or the mechanical system
(Note 1) The maximum value of the carrier frequency in order to achieve full output current is different
depending on the capacity. When raising the carrier frequency, the rated output current will be reduced.
0.5-12.0 (Note1)
0.5-10.0 (Note1)
b083
Be sure to keep the above-,emtioned table.
Otherwise, there is a danger of inverter unit breakage.
Chapter 4 Explanation of function
N300-P INSTRUCTION MANUAL
Summary of Contents for N300-P
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