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Chapter 6 ,P9 Failure and protection
P8-17
Set cumulative run arrival
time
0h
~
65000h
Default
:
0h
Used to set the running time of the inverter.
When the accumulated running time P7-09 reaches this set running time, the inverter
multi-function outputs ON signal.
P8-18
Start protection selection
0
:
Not protected 1: protected
Default
:
0
This parameter relates to the safety protection function of the frequency converter.
If the parameter is set to 1, if the running command of the inverter is valid (for example,
the terminal running command is closed before power-on), the inverter does not respond
to the running command, and the running command must be removed once. After the
running command is valid again. The inverter responds.
In addition, if the parameter is set to 1, if the running command of the inverter fault reset
time is valid, the inverter does not respond to the running command, and the running
command must be removed before the running protection state can be eliminated.
Setting this parameter to 1 can prevent the danger caused by the motor responding to the
running command when power is turned on or when the fault is reset without knowing it.
P8-19
Frequency detection value
FDT1
0.00Hz
~
Maximum frequency
Default
:
50.00Hz
P8-20
Frequency detection
hysteresis value FDT1
0.0%
~
100.0%
(
FDT1 Level
)
Default
:
5.0%
When the running frequency is higher than the frequency detection value, the inverter
multi-function outputs ON signal, and after the frequency is lower than the detection value,
the output ON signal is canceled.
The above parameters are used to set the detection value of the output frequency and
the hysteresis value of the output action release. Where P8-20 is the percentage of the
hysteresis frequency relative to the frequency detection value P8-19. Figure 6-16 shows the
function of the FDT function
.
Output frequency
Hz
FDT level
Frequency arrival
detection signal
FDTHysteresis value
=P8-19×P8-20
Time
t
ON
Time
t