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F-37
6
6.13.3 Retry function
H : Retry selection (Selecting the number of times)
Caution
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
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
H
Retry selection (number of
times)
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
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.
+ The retry function is disabled in the following unusual events:
• QEC : Arm overcurrent at start-up • GTT : Main unit RAM fault
• QEN : Overcurrent on the load side at start-up • GTT : Main unit ROM fault
• GRJQ : Output phase failure • GTT : CPU fault trip
• QJ : External thermal trip • GTT : Remote control error
• QV : Overtorque trip • GTT : Current detector fault
• G : External trip stop • GTT : Control circuit board format error
• WE : Small-current operation trip • GGR : EEPROM fault 1
• WR : Undervoltage trip (main circuit) • GGR : EEPROM fault 2
• GH : Ground fault trip • GGR : EEPROM fault 3
• GRJ : Input phase failure • GVP : Auto-tuning error
• GV[R : Inverter type error • G : VIA input detection error
• G : Main unit CPU communication error
• G : Excessive torque boost
• G : CPU fault 2
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