Chapter 5 Function parameter
91
Ch
ap
ter 5
command is active again, the inverter will respond.
In addition, if the parameter is set to 1, and if the running command is active when the
inverter resets fault, the inverter will not respond to the running command, you must firstly cancel
the running command in order to eliminate running protection status.
The parameter is set 1, you can prevent the danger caused by that the inverter unknowingly
responds to the running command in the event of power-on and fault reset.
F7.23 Frequency detection value (FDT1) 0.00Hz~F0.19(maximum
frequency)
50.00Hz
☆
F7.24
Frequency detection hysteresis
value (FDT1)
0.0%~100.0%(FDT1 level)
5.0%
☆
The inverter's multifunction output DO will output ON signal when the operating frequency
is higher than the detected value, conversely DO output ON signal is canceled.
The above parameters is used to set the detected value of output frequency, and the hysteresis
value after the output is canceled. Of which, F7.24 is the percentage of the hysteresis frequency in
the detected value(F7.23). The below figure is the schematic diagram of FDT.
Time(t)
FDT hysteresis value
=F7.23*F7.24
Output frequency(Hz)
ON
Time(t)
Frequency arrival
detection signal
(DO, relay)
FDT level
Diagram 5-22:
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)
Diagram 5-23:
Schematic diagram of frequency arrival detection amplitude
The inverter's multifunction 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
