Toshiba TOSVERT VF-S15 Instruction Manual page 6

2) f328 (Light-load high-speed operation selection) setting is not 0
Light load output (Function No. 106/107)
ON: The inverter judges that the light-load high-speed operation is possible during light-load
judgment time, and heavy-load is not detected during light-load high-speed operation.
When HSLL (Light-load high-speed operation prohibitive signal) is ON before light-load
high-speed operation, light-load output is not ON while HSLL is ON.
Light load output (Function No. 164/165)
ON: The inverter judges that the light-load high-speed operation is possible during light-load
judgment time, and heavy-load is not detected during light-load high-speed operation.
The signal is not dependent on HSLL (Light-load high-speed operation prohibitive signal).
Heavy load output (Function No. 108/109)
ON: When heavy-load is detected.
HSLL =OFF
Output frequency
RUN
OFF
HSLL
Function No.106
Function No.108
Function No.164
HSLL =OFF->ON->OFF
Output frequency
RUN
HSLL
Function No.106
Function No.108
Function No.164
Light-load judgment time
Light-load judgment time
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E6581871