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E6580757
F-26
6
6.12.3 Retry function
: Retry selection (Selecting the number of times the motor is to be
restarted automatically)
Warning
Mandatory
• 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 re-
starts.
• Function
This parameter resets the inverter automatically when the inverter gives an alarm. During the retry
mode, the motor speed search function operates automatically as required and thus allows smooth
motor restarting.
[Parameter setting]
Title Function Adjustment range Default setting
Retry selection
0: None, 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
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 fail-
ure, overcurrent, overvoltage or overload.
This function will also be canceled if re-
trying is not successful within the speci-
fied number of times.
★ The retry function is disabled in the following unusual events:
•
: Arm overcurrent at start-up • : Main unit RAM fault
•
: Overcurrent on the load side at start-up • : Main unit ROM fault
•
: Output phase failure • : CPU fault trip
•
: External thermal trip • : Remote control error
•
: Overtorque trip • : EE PROM fault
•
: Small-current operation trip • : Auto-tuning error
•
: External trip stop
•
: Undervoltage trip (main circuit) • : Ground fault trip
•
: Input phase failure • : Inverter type error
★ Protective operation detection relay signals (FLA, FLB, FLC terminal signals) are not sent during use of
the retry function.
★ A virtual cooling time is provided for overload tripping (
, , ). In this case, the retry func-
tion operates after the virtual cooling time and retry time.
★ In the event of over voltage tripping (
∼ ), re-tripping may result unless the DC voltage de-