Chapter 5 Function parameter
88
Ch
ap
ter 5
Time(t)
FDT hysteresis value
=F7.23*F7.24
Output frequency(Hz)
ON
Time(t)
Frequency arrival
detection signal
(DO, relay)
FDT level
Figure5-18:Schematic diagram of FDT level
F7.25 Frequency reaches detection width
0.00~100%( maximum
frequency)
0.0%
☆
Set frequency
Time(t)
Detection
amplitude
Output Frequency Hz
Frequency reaches
detection signal
ON
ON
Time(t)
Figure5-19:Schematic diagram of frequency arrival detection amplitude
The inverter's multi-function output DO will output ON signal when the inverter's operating
frequency is in a certain range of target frequency.
This parameter is used to set the frequency arrival detection range, the parameter is the
percentage of maximum frequency. The above figure is the schematic diagram of frequency
arrival.
F7.26
Frequency detection value
(FDT2)
0.00Hz~F0.19(maximum frequency) 50.00Hz
☆
F7.27
Frequency detection hysteresis
value (FDT2)
0.0%~100.0%(FDT2 level)
5.0%
☆
The frequency detection function is same as FDT1 exactly, please refer to the instructions of
FDT1 or function codes F7.23, F7.24.
F7.28
Random arrivals frequency
detection value 1
0.00Hz to F0.19 (maximum
frequency)
50.00Hz
☆
F7.29
Random arrivals frequency
detection width 1
0.00% to 100.0% (maximum
frequency)
0.0%
☆
F7.30
Random arrivals frequency
detection value 2
0.00Hz to F0.19 (maximum
frequency)
50.00Hz
☆
F7.31
Random arrivals frequency
detection width 2
0.00% to 100.0% (maximum
frequency)
0.0%
☆
When the inverter's output frequency randomly reaches the range of the detected
