Explanation of Function
Seite 86 / 180
There is the range which the midway adjustable-speed time becomes fast in the S character pattern.
When An intelligent input terminal is allocated to LAD cancel (LAC) and the terminal is ON ,output frequency
is immediately controlled by Setup frequency.
Instantaneous power failure / under-voltage
Instantaneous stop and start
(1) You can select whether the inverter trips or retries (restart)
when an instantaneous power failure/under-voltage occurs.
When retry function is selected with b001, and an
Instantaneous stop/under-voltage trip occurs restart is tried
16 times and a trip will occur after 17 times.
And when retry function is selected, and an over-current or
an over-voltage occurs, restart is tried 3 times and a trip will
occur on the forth time. When an instantaneous power
failure/under-voltage occurs, you can select execution of trip
with b004. To select a retry function with b001, set the following retry mode correspondent to each
system.
Set item
Functio
n code
Data Description
00 Trip.
01
Restart from 0Hz on retry.
02
Start equaling frequency on retry. (example1)
Retry selection
b001
03
Start f-equaling and stop decelerating on retry.
After stop, start trip. (example1)
Allowable under-
voltage power failure
time
b002 0.3-1.0
Units : second
If the instantaneous power failure time is shorter than the
set time, a restart will occur. (example1) If the
instantaneous stop time is longer than set time, trip.
(example2)
Retry wait time
b003
0.3-100.
Units:second
Delay before motor restart time.
00
Invalid
Trip isn’t caused and alarm isn’t output.
Instantaneous
power
failure/under-voltage
trip during stop
b004
01
Valid
Trip is cause and alarm is output.
00
Restart to 16 times on instantaneous stop under-voltage.
Instantaneous
power
failure/under-voltage
retry time selection
b005
01
Restart freely on instantaneous stop under-voltage.
Frequency setting
for
f-equaling
b007 0.00-400.0
Units:Hz
When the frequency of the motor during free-run is less
than this set frequency, restart with 0Hz is caused.
(example3,4)
F-equaling start: The inverter reads the motor RPM and direction and restarts the inverter to match these
b001 :Retry selection
b002 :Allowable under-voltage power failure time
b003 :Retry delay time
b004 :Instantaneous power failure under-voltage
trip during stop
b005 :Instantaneous power failure undervoltage
retry time time selection
b007 :frequency setting for matching frequency
Relatio
