Chapter 7 Explanation of Functions
7 - 69
(1) Signal output when the constant-speed frequency is reached (01: FA1)
The inverter outputs the signal when the output frequency reaches the frequency specified by a frequency
setting (F001, A020, A220) or multispeed setting (A021 to A027).
(2) Signal output when the set frequency is exceeded (02: FA2)
The inverter outputs the signal when the output frequency exceeds the acceleration or deceleration
frequency specified by a frequency setting ("C042" or "C043" [FA2]).
(3) Signal output only when the set frequency is reached (06: FA3)
The inverter outputs the signal only when the output frequency reaches the frequency specified by a
frequency setting ("C042" or "C043" [FA3]).
fofffon
Output frequency
FA1
Set frequency
fon: 1% of maximum frequency
foff: 2% of maximum frequency
(Example)
Maximum frequency (fmax) = 120 Hz
Set frequency (fset) = 60 Hz
fon = 120 x 0.01 = 1.2 (Hz)
foff = 120 x 0.02 = 2.4 (Hz)
At acceleration, the signal turns on when the output
frequency reaches 58.8 Hz (60 - 1.2 = 58.8).
At deceleration, the signal turns off when the output
frequency reaches 57.6 Hz (60 - 2.4 = 57.6).
C042 C043
fon
foff
fon: 1% of maximum frequency
foff: 2% of maximum frequency
Output frequency
FA2
Output frequency
FA3
fon: 1% of maximum frequency
foff: 2% of maximum frequency
fon
fon
foff
foff
C043
C042
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