SV-iS7 User Manual - Inverter Drive Supermarket

Chapter 10 Protective Functions
10-3
PRT-21 OL Trip Level, PRT-22 OL Trip Time : The inverter output is blocked or stops decelerating according to the
method set in PRT-17 if the current flowing in the motor is higher than the value set at OL Trip Level and the current
continues to flow for the OL Trip Time.
PRT-17 OL Warn Select : Warning signal is released using the multi-function output terminal of the terminal block or
relay when a load of OL warning level is supplied. It gets active if 1 Yes is selected and not active if 0 No is selected.
PRT-18 OL Warn Level, PRT-19 OL Warn Time : The multi-function output(Relay 1, Relay2, Q1) releases the
warning signal if the current flowing in the motor is higher than the OL Warn Level and the current continues to flow for
the OL Warn Time. The multi-function output terminal and relay release signals if Over Load is selected at OUT-31~33.
The output of the inverter is not blocked.
10.1.3 Stall prevention
In case of a stall due to overload, over current flows in the motor possibly causing overhead or damage to the motor of
interrupting the system process of the motor load side. The output frequency of the inverter is automatically controlled in
order to prevent the motor stall due to overload.
Group Code No. Function Display Initial Setting Display Setting Range Unit
PRT
Current
Multi-Function Output
t : PRT-19
t t
PRT-18
50 Stall Prevent - 111 - Bit
51 Stall Freq 1 - 60.00 Starting Freq ~ Stall Freq 1 Hz
52 Stall Level 1 - 180 30~250 %
53 Stall Freq 2 - 60.00 Stall Freq 1~ Stall Freq 3 Hz
54 Stall Level 2 - 180 30~250 %
55 Stall Freq 3 - 60.00 Stall Freq 2~ Stall Freq 4 Hz
56 Stall Level 3 - 180 30~250 %
57 Stall Freq 4 - 60.00 Stall Freq 3~ Max. Freq Hz
58 Stall Level 4 - 180 30~250 %
OUT 31~33 Relay1,2, Q1 9 Stall - -