SV-iS7 User Manual - Inverter Drive Supermarket

2) Reset Starting after a Trip
Chapter 8 Applied Functions
If bit 2 is set at 1 and PRT-08 RST Restart is set as Yes, acceleration is carried out to the frequency before the trip in
speed search motion when the reset key(or terminal block reset) is input.
3) Re-starting after an Instantaneous Interruption
If the inverter input power is OFF, low voltage trip occurs and power is recovered before the internal power of the inverter is
OFF, acceleration is carried out to the frequency before the low voltage trip in speed search motion.
Simultaneous Starting at the Time of Power ON, Bit 4 is set at 1 and ADV-10 Power-on Run is set as Yes. If inverter input
power is supplied with the inverter operating command ON, acceleration is carried out to the target frequency in speed
search motion.
Caution
For correct operation, please set speed search when accelerating in case of operation from the load to
sensorless II mode. It may cause over current trip or over load trip
E.g.) Speed search in case of power recovery after instantaneous interruption
Notice
When input power is blocked due to the instantaneous interruption, inverter blocks output by making Low
voltage trip (Lvt).
If input power is recovered, frequency is output and voltage increases by PI control before Low voltage trip (Lvt)
occurs.
t1 : Current exceeds over the size set in ADV-61 code, voltage stops increasing and frequency decreases.
t2 : Current drops under the size set in ADV-61, voltage increases again and voltage stops decreasing.
Normal acceleration at the frequency before trip occurs in case of normal frequency and voltage.
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