E6581595
F-28
6
6.12.3 Retry
function
: Retry selection (number of times)
Caution
Mandatory
action
Do not go near the motor in alarm-stop status when the retry function is selected.
The motor may suddenly restart, which could result in injury.
Take measures for safety, e.g. attach a cover to the motor, to prevent accidents if the motor suddenly
restarts.
Function
This parameter resets the inverter automatically when the inverter gives an alarm. During the retry
mode, the motor speed search function operated automatically as required and thus allows smooth
motor restarting.
[Parameter setting]
Title
Function
Adjustment range
Default setting
Retry selection (number of times)
0: Disabled, 1-10 times
0
The likely causes of tripping and the corresponding retry processes are listed below.
Cause of tripping
Retry process
Canceling conditions
Momentary power
failure
Overcurrent
Overvoltage
Overload
Overheating
Up to 10 times in succession
1st retry: About 1 sec after tripping
2nd retry: About 2 sec after tripping
3rd retry: About 3 sec after tripping
10th retry: About 10 sec after tripping
The retry function will be canceled at once if
tripping is caused by an unusual event other
than: momentary power failure, overcurrent,
overvoltage or overload.
This function will also be canceled if retrying
is not successful within the specified number
of times.
Retry is only done when the following trips occur.
,
,
,
,
,
,
,
,
,
Protective operation detection relay signals (FLA, FLB, FLC terminal signals) are not sent during use of
the retry function. (Default setting)
To allow a signal to be sent to the protective action detection relay (FLA, B and C terminals) even during
the retry process, assign function numbers
or
to
.
A virtual cooling time is provided for overload tripping (
,
).
In this case, the retry function operates after the virtual cooling time and retry time.
In the event of tripping caused by an overvoltage (
-
), the retry function will not be activated
until the voltage in the DC section comes down to a normal level.
In the event of tripping caused by overheating (
), the retry function will not be activated until the
temperature in the inverter comes down low enough for it to restart operation.
During retrying, the blinking display will alternate between
and the monitor display specified by
status monitor display mode selection parameter
.
The number of retries will be cleared if the inverter is not tripped for the specified period of time after a
successful retry.
"A successful retry" means that the inverter output frequency reaches the command frequency without
causing the inverter to re-trip.
…
