Retry Function - Toshiba TOSVERT VF-S9 Instruction Manual

6.12.3 Retry function

• 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-
Mandatory
starts.
• Function
[Parameter setting]
Title
6
The likely causes of tripping and the corresponding retry processes are listed below.
Cause of tripping
Momentary power
failure
Overcurrent
Overvoltage
Overload
The retry function is disabled in the following unusual events:
•
•
•
•
•
•
•
•
•
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 (
tion operates after the virtual cooling time and retry time.
In the event of over voltage tripping (
: Retry selection (Selecting the number of times the motor is to be
restarted automatically)
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.
Function
Retry selection
Retry process
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
: Arm overcurrent at start-up
: Overcurrent on the load side at start-up
: Output phase failure
: External thermal trip
: Overtorque trip
: Small-current operation trip
: External trip stop
: Undervoltage trip (main circuit)
: Input phase failure
Warning
Adjustment range
0: None, 1 ∼ 10 times
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.
•
: Main unit RAM fault
•
: Main unit ROM fault
•
: CPU fault trip
•
: Remote control error
•
: EE PROM fault
•
: Auto-tuning error
•
: Ground fault trip
•
: Inverter type error
, ,
∼
), re-tripping may result unless the DC voltage de-
F-26
E6580757
Default setting
0
Canceling conditions
). In this case, the retry func-