52
SKIP FREQUENCIES 1 to 3 (Parameter P43 to P45) and
SKIP FREQUENCY BAND WIDTH (Parameter P46)
If the load mechanism resonates at a specific inverter output frequency, a continuous
operation in that frequency band can be avoided by setting the skip frequency and the skip
frequency band.
∗
Up to three skip frequencies can be set, and the skip frequency band can be set between
1 and 10Hz.
[Parameter P43 : Skip frequency 1 setting]
[Parameter P44 : Skip frequency 2 setting]
[Parameter P45 : Skip frequency 3 setting]
Data setting
range (Hz)
000 • 0.5 to 250
("000" is set when the skip
frequency is to be disabled)
[Parameter P46 :
Skip frequency band width setting]
Data setting
range (Hz)
0 • 1 to 10
("0" is set when the skip frequency is
to be disabled)
CURRENT LIMIT FUNCTION (Parameter P47)
If the output current reaches the overcurrent stall level due to an overload operation, the
frequency is automatically reduced. When the load returns to the correct level, the frequency
is automatically returned to the original setting, and the operation is continued.
This function is effective for preventing overcurrent trips in machines that knead glutinous
materials, etc.
∗
The function's validity and the deceleration time for automatically lowering the frequency
when the output current reaches the overcurrent stall level are set with this parameter.
∗
The operation level (overcurrent stall level) can be set with parameter P63 (OCS level).
Data setting range (sec.)
00 • 0.1 to 9.9
("00" is set when the current limit function is disabled.)
Out
put
f
requenc
y (Hz)
Skip frequency band width
(Parameter P46)
0
Skip frequency
(Parameter P43, 44, 45)
Out
put
c
urrent
Out
put
frequenc
y
OCS level (Parameter P63)
Deceleration time according to
parameter P47 setting value
Normal acceleration time
Does not decelerate to below 10Hz.
