Chapter 5 Function parameter
94
When the total power-on time(F6.08) reaches the time set by F7.20, the inverter multifunction
digital DO outputs ON signal.
Setting cumulative running arrival
time
Used to set the running time of inverter.
When the total power-on time(F6.07) reaches the set timeF7.21, the inverter multifunction
digital DO outputs ON signal.
This parameter relates to the security features of the inverter
If this parameter is set to 1 , and if the running command is active (e.g. the terminal running
command is closed before power-on) when the inverter is in power-on, the inverter will not
respond to the running command, you must firstly cancel the running command, when the running
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.
Frequency detection value (FDT1)
0.00Hz~F0.19(maximum
frequency)
Frequency detection hysteresis
value (FDT1)
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
Figure 5-22:Schematic diagram of FDT level
Frequency reaches detection width
0.00~100%(
maximum
frequency)
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