Chapter 6 ,P9 Failure and protection
109
.
母线电压
电压
瞬时停电动作判断
电压P9-62
运行频率
瞬时停电减速频率
切换点P9-60
运行频率
瞬时停电减速频率
切换点P9-60
减速时间3
减速时间4 回升加速时间
减速时间3
减速时间4
瞬时停电动作电压回升
判断时间P9-61
时间
时间
时间
减速
减速停机
Voltage
Bus Voltage
Instantaneous power failure
action judgment voltage P9-62
Running frequency
Instantaneous power
failure speed reduce
frequency switch
point P9-60
Running frequency
Instantaneous power failure
speed reduce frequency
switch point P9-60
Deceleration stop
deceleration time3 deceleration time4
decele
ration
time4
decele
ration
time3
Pick up acceleration time
time
time
time
Instantaneous power failure action voltage
rise judgment time p9-61
Figure 6-24 Schematic diagram of instantaneous power failure
P9-63
Drop protection option
0: Invalid 1: Valid
Default
:
0
P9-64
Drop detection level
0.0
~
100.0
%
Default
:
10.0%
P9-65
Drop detection time
0.0
~
60.0s
Default
:
1.0s
If the load-shedding protection function is valid, when the inverter output current is
less than the load-detection detection level P9-64 and the duration is greater than the load-
off detection time P9-65, the inverter output frequency is automatically reduced to 7% of
the rated frequency. During load-shed protection, if the load recovers, the drive
automatically returns to operating at the set frequency.
P9-67
Overspeed detection
value
0.0
%~
50.0
%(
Maximum
frequency
)
Default
:
20.0%
P9-68
Overspeed detection time
0.0s
~
60.0s
Default
:
5.0s
This function is only available when the drive is running with speed sensor vector control.
When the inverter detects that the actual speed of the motor exceeds the set frequency,
the excess value is greater than the overspeed detection value P9-67, and the duration is
longer than the overspeed detection time P9-68, the inverter fault alarm Err43, and
according to the fault protection action mode deal with.