SV-iS7 User Manual - Inverter Drive Supermarket

Chapter 8 Applied Functions
ADV-61 SS Sup-Current : Controls the current during speed search motion on the basis of the motor rated current. The
gain of the controller is set at ADV-62 and 63.
ADV-64 SS Block Time : Blocks output for the set period of time and then starts operation before starting speed search.
Speed search operation is mostly used for loads with high inertia. In case of a load with high friction, it is recommended to
restart after stop.
The iS7 series is designed to conduct normal operation in case of an instantaneous interruption shorter than 15mSec
when being used within the rated output. The inverter with 200V input voltage and the inverter with 400V input voltage
guarantee the instantaneous interruption time when the input voltage supplied to the inverter is 200~230Vac and
380~460Vac respectively. The current is on the basis of the static torque load current(CT load).
The DC voltage inside the inverter might vary according to the output load. Therefore if the instantaneous interruption time
is longer than 15mSec or the output is higher than the rated output, a low voltage trip(Low Voltage) might occur.
8.1.20 Automatic Restart
1) Automatic Restart
8-38
Group Code No. Function Display Setting Range Initial Value Unit
PRT
08 RST Restart 0:n /Yes (1) 0: No/Yes(1) -
09 Retry Number 0 ~ 10 0~10 -
10 Retry Delay 0 ~ 60.0 1.0 Sec
CON 71~75 SS-Related Function - - -
This is used to prevent a system interruption with the inverter protective function in case of noise and so on.
PRT-08 RST Restart, PRT-09 Retry Number, PRT-10 Retry Delay : It operates when PRT-08 RST Restart set to
YES and The available number of automatic restart is set at PRT-09. In case of a trip during operation, the inverter
conducts automatic restart after the time set in PRT-10 Retry Delay. At each automatic restart, the number of
automatic restarts decreases by 1 inside the inverter and a set number of trips occur and if the number is 0,
automatic restart is not carried out even if a trip occurs.
If a trip does not occur within 60 seconds after automatic restart, the number of automatic restarts that was reduced
inside the inverter increases again. The maximum increase number is limited to the number of restarts.
Automatic restart is not carried out in case of a stop caused by low voltage, emergency stop (Bx), overheat or
hardware problem (HW Diag).
The acceleration of automatic restart is the same as speed search operation. Thus the functions of CON72~75 can
be set according to the load and for the speed search function, see Page 8-36.
Caution
In case of operation with the number of automatic restarts set, the reset is terminated and the motor
is rotated automatically by the inverter.